Sorry but I have to ask...anyone here NOT having

trouble with their RMS or ISMB? As in you haven't changed either and you don't have oil on the garage floor...and if so, what is your milage. And the point of this is? The "official" failure rate of the original factory installed ISMB seems to be between 4 and 6 percent. True or False? And what is the "official" failure rate of the original factory installed RMS? I'm not looking for rose colored glasses views, I'm just looking for perspective. And just to keep it in perspective, I hope each answer is only for that person's personal experience with their car.

I hope you have thick skin. You are going to get some probably rather harsh comments directed at you for bringing yet another RMS/IMSB (mainly IMSB) thread here. In the spirit of your attempt to get some hopefully useful info, and because I'm such a nice guy, I'll chip in with my experience. 2002 Boxster. RMS replaced at around 25K miles. (RMS still leak sign free.) IMSB never touched, it is original. Miles on car/engine: 287K.

Dear John, Macster is being nice. I'm going to be a little more blunt. There is no definitive answer to the question you are pondering. Many 996s will have a leaky RMS at some point, but the vast majority will not suffer a catastrophic failure of any type. However, it happens. And it is horrendous and painfully expensive. Need more... See the giant stickie thread at the top of this board with IMS in the title? Please read that.

Thanks for the reply. I know I'll get some flak but in the time I've been here the bias seems to be based on reported problems when infact they are a minority mechanical issue. So who isn't having failures and for how many miles.

Told ya! Still, Ralph is right and he put it very succinctly.

Thank god someone finally raised this question.

Hi rpm and thanks for the RMS info. If everything could be covered by the stickies we wouldn't need any new posts. And your point that no one has definitive known causes for the issues begs to again make people aware of what the real risk is for failure based on positive as well as negative experiences.

Here's the bottom line that some people don't get: There is a 5-10% chance that your Porsche's engine, due to a known and proven design flaw, may self-destruct. The repair will cost nearly the value of the car. There are several reliable updates that will avoid this potential problem. In general they cost a few thousand to install, or the cost of a 60K belt service. Do it or don't, the choice is yours. But stop asking about it! No amount of discussion will change the basic facts. Is it time to propose to admin that any new IMS threads just be deleted?

Based on this and his previous posts, the OP is clearly bored and/or looking for attention. Move along...nothing to see here. Mods, please lock this down quickly.

Hmmm, a few thousand dollars for a 60k belt change???

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It was a ballpark comparison.

Its Sunday. Get out and drive your car!! Or sell it and buy a preius with warranty

73k on my 2002 Targa. Original IMSB. I'll replace it sometime soon along with my clutch but in the meantime I have installed a magnetic drain plug, switched to Joe Gibbs DT 40 oil along with changes every 6 months. And lastly examine my oil filter which BTW is absolutely free of anything metallic. Also sending oil samples to Blackstone Labs.

Hey John! I replaced the RMS seal at 28000 miles and not a drop of oil since. The IMSB is original and I currently have 111,000 miles! She runs perfectly! Pete

Interesting how so many people get upset by a simple question, and feel it makes sense to negate anyone who asks to hear from people who have not had these famous problems. Obviously no one was forced to open this thread and no one is forced to reply to it. However if many here are tired of hearing people bitch about their IMSB and RMS...why should they object to a request to hear from people who have not had those failures? And since no one here seems able to explain exactly what leads to the IMSB failure, perhaps it would be interesting to explore the cars that don't have this failure. In the book 996 The Essential Companion there is a sensible discussion on how the VariocamPlus system is highly dependent on oil pressure and how low oil level (below the minimum mark) with a hot engine at idle can cause a drop in pressure serious enough to cause major failures. Since the difference between maximum and minimum on the oil guage and dipstick is just over a quart, that is a very small amount of oil to be down in a traditional sense. If the low oil level caused a pressure failure it appears damage would first occur at the opposite end of the IMS...at the cam chain gear, not at the IMS bearing. The shaft would become out of balance and this would destroy the bearing...not the bearing failing and sending the issue in the other direction. Porsche has redsigned this shaft and bearing and seals and drive chain combinations three different times. And the problem still existed. So perhaps low oil level and subsequent low pressure is the mechanical source of the problem. Which brings me back to the original point of this thread...to hear from people who have not had this or the RMS problems. While the RMS is the less serious of the two, it is oil and seal related and it makes sense to include it in an owner overview. Again, if someone doesn't want to be part of this discussion, they don't have to open the thread. However it seems rather small minded to insist that a discussion not take place in the present tense.

John, you can have a "leak free" 996. I replaced my RMS, IMSB, cam sol seals, and many other things and had a completely "leak free" 996 at @58,000 miles until I sold it. I would wager that it is still leak free. And,,, to answer your offensive post question, the reason all NA 996, all 986, and some 997 owners get upset is because in a way we were all screwed by Porsche by obvious design flaw(s) which can quickly make a $20,000 to $30,000+ sports car worth about $0 in about 5 seconds. That pretty much sums that up. And,,, design flaw can mean the IMSB, oiling system, etc. pretty much everything about the M96 NA.

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Didn't read.

John, I agree with you about shutting down the topic. I realize that lots of these guys have been on this board for a long time and they're tired of this topic. If it was me and I was tired of it I would just roll my eyes and not even look at it. The beauty of the internet is that you don't have to subject yourself to any post you don't like. I am a new guy as far as Porsche ownership goes so I am still at the stage where everything is relatively new and interesting. I like reading all the different opinions. I get on this forum whenever I'm at the computer. Eventually I won't check it out so often, but until then its enlightening and entertaining. I didn't known a thing about the IMSB subject when I got my car. I thought it was an almost new (because of the low miles) Porsche and I took it on a partial trade for another car I had. The amount of posts about the subject and the different opinions influenced my decision to send the car to Jake and have him do his thing to it. Since the original bearing turned out to be fine when Jake got it no one will ever know if it was going to fail or if it would be one of the ones that never fail. I'm happy about having Jake do the upgrade and thats all that matters to me. I think that if more owners of cars that are doing just fine would post that information it would be comforting to other owners who have not done it. Normally people only post when there is a problem, not when everything is fine. I'm also sure that there are lots of owners who have never even been on these sites. I see that you're in Sherman Oaks. I am driving my Porsche to Reseda for a few days to have Thanksgiving down there, maybe we can meet.

Guys. It just gets old. It's been discussed and dissected ad nauseum and you are not going to add anything to the conversation. These threads by noobs just reek of Paranoia. Just replace the bearing. You will feel better. Or...trade in the car for something else. Boobies?

Original IMSB and RMS, 70K kms - pefect!!

I bet if your subject title had IMS in it half the people that commented would not have opened the thread including myself. But since your title lured us into opening it you shouldnt be upset about any harsh comments. If you do a search there is probably over 1000 threads on that issue.

99 C2, stock, driven hard regularly. 119k leak free, trouble free miles..

99 C2 with all original components (build date 11/98). 48,000 miles. Purchased 3 weeks ago. Driving it way to hard. Thank god for rev limiters although I'm not sure 7,400 isn't a tad high. Maybe the engine will blow and I can build a new one, with a big *** turbo. OP, Thanks for keeping this topic alive. Us new guys haven't had much opportunity to discuss it.

Orgnal IMSB and RMS 95k Kms 03 C2

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I wasn't having any issue but I didn't want to risk it. I upgraded when I noticed an RMS oil leak. It was a good opportunity since the tranny was off. Put in a new clutch kit as well while we were there. My old IMS was in good shape but there was a very slight play.

John, Who did you scratch out from your avatar picture is what I really want to know.

Morrie kept busting people's ***** about the IMS bearing. He kept bugging Jimmy about the IMS bearing causes and issues. Don't be like Morrie John from Ireland. Goodfellas - Jimmy whacks Morrie, the full scene - YouTube

Early build 99, over 70k miles, oil change every 5,000 miles, driven daily, no leaks, no issues 😊, probably just jinxed myself.

I too have been on this forum for while and very sick of all this talk but I'd like to offer up my stats: '01 c2 manual. Not sure if single or dual row. Original motor, 0w40 used all it's life, 125k mileage. Original IMS. I've had leaking for the past year but doesn't really phase me as it's probably the RMS leaking again. Have done 1 Blackstone oil analysis and came back great. I've decided not to do anymore nor cut open the oil filter. Yes I'm the totally opposite of most on here. I just drive it and let natural selection take it's course. I don't lose sleep over it either. Life's too short. Even if you replace the IMS, it doesn't prevent someone from totaling your car. Even if you don't get into an accident or have any other 25+ modes of engine failure or other issues, you can always come down with health issues. Point is there are way too many variables in life outside of your control to worry about a stupid little part where people are getting way too paranoid about...

Still living on the edge I see.

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These stats are similar to getting in an accident and totaling your car. Actually the chance of ims failure is much higher than the chance of totaling your car. Do you get insurance to cover a totaled car? If so then you should address the ims issue as well. If you weigh the risk and are ok with the chances then go ahead and cancel your insurance and leave the original ims in. To be honest it is a personal preference either way based on your risk tolerance.

There's a poll at the top of this forum asking if readers have experienced IMS bearing failure. Currently, 9.96 percent of respondents (yeah, 9.96 - heh) say they have. That means that just over 90% of us haven't. While I understand the urge to restate this question in endless iterations, the answer is the same no matter how you squint when you look at the data. To the best of my recollection, the settlement paperwork indicated that approx. 10% of single-row bearings were failing, and it is widely held that fewer dual-row bearings (perhaps as little 3-4%) fail. As time wears on, the numbers will only go higher. There is no magic age or mileage that, if reached by a 996, will ensure that the bearing will be sound for the rest of the life of the car. Since single-row and dual-row bearings will continue to fail, the percentages are going to get worse. Today's 10% will eventually be 15%, or maybe even 25%. Just like a year ago, your options include (a) replacing the bearing with one of the several retrofit parts available, or (b) doing nothing. I fall into the former camp; many others (like Apline003) fall into the latter. Everyone, regardless of which camp they fall into, will eventually wind up with a broken 996 if they continue to drive it. This is not opinion, nor is it an indictment of the quality of the 996. All machines fail eventually. For those of us who drive them hard, failure will come sooner than later. I kicked the hell out of my 996 this weekend. It was hot and tired when I got done flogging it all over San Diego county Saturday. I bounced off the rev limiter a couple of times, and a couple of my shifts were harder than they needed to be. My car is beautiful, but more importantly to me, it's a blast to drive. If you derive pleasure from looking at your 996, park it somewhere (like we used to tease KK for doing) and just look at it. Your IMS bearing will not wear out from this practice. If, however, the pleasure you get from the 996 is visceral, and it involves lots of acceleration in all possible axes, you're gonna break it. Maybe a bearing will go. Maybe the AOS will fail, you'll ingest a few teaspoonfulls of oil, and you'll hydrolock a piston and poke a hole in the block. Maybe you'll find a patch of loose gravel and wind up in a ditch. Backwards. On fire. I love my 996, and I'll do everything I can to keep it alive for as long as I can (including tossing new bearings into the mix every few years). However, I'm a realist. I've broken every car I've ever owned in one way or another...blown-up clutches, snapped driveshafts, busted U-joints, smoked bearings, you name it...and I have no misapprehension that my Porsche will somehow live forever. I will forestall its demise as long as I can, during which time I will be extracting every ounce and moment of fun.

9.96% of 996's. I'd ask "What are the odds?" - but since the numbers are there in the poll, that would be rhetorical...

I think the only reason the failure rate percentage seems to hover around 10% is that the total vehicle pool does not include vehicles out of service due to totaled, etc. and vehicles whose IMSB was changed as PM. The true failure rate would probably be closer to 12% to 15%. If you include the other MOF that cause CEF, the failure rate would become closer to 25%.

The only way I can imagine the numbers getting better requires retrofitted cars being resold repeatedly, eventually skewing the data because the same "good" cars are being reported on by multiple owners. Well, that and people could cheat. That would make the numbers better, too.

These posts will only get worse based on demographics and the finances. When new, these cars were purchased for over $80K. As the cars depreciated, their new owners are likely not as flush with cash as their predecessors. Now that these cars can be bought for well under $20K, the thought of a catastrophic failure (of any kind) is clearly a major concern, as it should be. Let's face it, there a lot of people that can afford a $20,000 car, but they certainly couldn't handle a $15,000 repair on the $20,000 car. So, its a different kind of paranoia now. The 996 is an incredible bargain (I thought so when If bought mine just south of $30K), but I also knew the risks and was prepared for the worst. I would have hated to spend the dough if the car grenaded, but it wouldn't have put me on the street if it did. Today's 996 is cheap to buy, expensive to maintain, and to today's owners, has the potential to be financially devastating if the engine goes (for whatever reason). Today's owners may not be as prepared for the worse case scenarios as the previous owners were.

On the plus side, cheap and plentiful is the only thing that will ever ultimately cause the 996 to improve in value. The mortality rate for cheap cars owned by less affluent/younger/whatever owners is going to be higher, and the herd needs to be culled if there's any chance these things start appreciating. I present for your consideration the humble 914. The good news for you all is that my 996 may eventually be a casualty, reducing the number of survivors by one...

I love all the people that just throw out statistics as if they're fact. Just had my IMS replaced at a shop, as I was experiencing bad vibration in the car. IMS came out with "some play," but I wasn't able to inspect the bearing, myself. Sounds like my real issue was a dual-mass flywheel that had gone out of spec. Nothing like paranoia costing me money. I would have done it with a clutch, anyway, but saying the numbers are skewed because of cars that are off the road due to accidents, etc., is a gross misunderstanding of statistics. Cars that are totalled would theoretically have the same failure rate as those that are still running. Quit spouting crap, and feeding the paranoia.

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KK, you do realize that only the worry warts that's discovered this forum has participated in the survery making those numbers worthless at best, right? The other 128k owners are probably just enjoying their cars.

Geeze Louise, why do some people get their knickers in a twist every time someone with less that 1000's of posts brings up IMSB? Most of the threads and posts her and on other forums ( and I have read most of them) are all doom and gloom. "You M96 will blow up" "It's a Porsche design fault", "If you dont change the IMSB, you are a fool", etc. Well, the simple fact is MOST of the cars with a M96 HAVE NOT had a failure and are running fine, lots with more than 100k on the clock. Simple fact. ALL mechanical things will eventually fail. I dont care how well over engineered it is. at some point it will fail The polls here and elsewhere as well as a majority of threads deal are from people that have had a problem, not the vast majority that have not. Am I saying that there is no value to participating in this and other forums, hell no! People post problems far more than no problems It is simply a matter of choice, if you dont like the post subject or it pisses you off, DON'T READ IT! Yes, I am newer to this particular forum than most, but come on you old timers, its not all about you It seems that some of you are more interested in basing others than anything else We all have these cars because we LOVE to drive them. I feel blessed every time I hope in one of mine and start her up

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Everything I've heard says that those 128k cars are on the verge of leaving their engines on the highway, at any moment. Evidently, the M96 was originally intended to be a grenade, and Porsche determined that they could save all the R&D money by sticking it in the back of the 996.

So...your argument is that the majority of people haven't had any issues - which is exactly what the poll also says?

I think I'll start a Kickstarter or Indiegogo campaign for someone to write a Trojan that remains dormant until you create an IMS thread on Rennlist, at which point your computer explodes. Anyone want in?

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I think the point, that a lot of people have recognized, but a stubborn few continue to overlook is that the poll, even at 10%, reflects a disproportionately high number of failures. Most of the people replying to the poll have had a negative experience, and found their way here, because of it. I've had two 996's, so far, both had the IMS bearing replaced, and neither one needed it, as far as I can tell. First one was done by the next owner, and he used the factory part (GOD FORBID!), and the one I just had done got an LN bearing, because I was unable to do the job, myself. I've never responded to the poll . . . This topic follows the same logic as the Assault Weapons Ban.

I took mine out at 108,000...solid as rock...no leaks

So...what's the best oil to prevent an IMSB failure?

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Shut up and take my money.

Someone needs to modify the KK's signature to reflect who he is and what his 996 Porsche ownership looked like. A man drives his car for ****ing 2,000 miles in TWO YEARS. Drops the engine every month and changes oil every 300 miles. Now his statistical genius came up with 25% failure figure for the 996 motor. Brilliant! I am honestly glad I don't own a 996 anymore. As **** posted here about IMS and failure rates is absolutely ridiculous. JohnIrish makes 5 threads about IMS, KK is still spreading 996 is a POS gospel, and every failure is being treated with "better flatbed it to the shop". Unreal. I introduced a few friends to the 996 forum for entertainment purposes and they are loving it. Kind of like the "support group therapy" from Fight Club.

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KK doesn't own a 996 anymore either, yet he continues to bash the marque. Glad he's not a girl as he seems pretty bitter about it, even though he's never suffered any failures.

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Absolutely correct -- he's a ******!!!

Sigh.....I'm tired/bored and think I'll take a nap. 99 C2 131,000+ miles, original IMSB and RMS. Not worried. If it blows, I'll fix it and keep on truckin! I love the car and that's that. Think I'll go check the blinker fluid...

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I was going to mention this from a statistical point of view, but you summed it up quite nicely.

OP, I rarely post xxx responses but... my engine failed due to a failed valve seat at 68,000. Not an xxx bearing but a dropped valve seat and d chunked cylinder. I've had my share of trouble and expense for an engine rebuild. However I've never seen a sticky or whatever you call it for failed valve seats. I know many other cars have failed for the same reason. (I don't care how many) I don't login each day to whine about it or post threads to stir paranoia. I just rebuilt it and included a long list of new components to add reliability. At this point our cars are 10+ years old. If the engine quits, for whatever reason, that is the chance we took by purchasing a used car out of warranty. The sooner people digest this the better. Please search xxx bearing and read ALL the posts. Then if you think you have a new angle to add please feel free to discuss it in the proper post at the top of the page. FWIW my single row was replaced by an upgraded triple row by LN Engineering. The original was fine upon inspection.

Hold on there Kalash. I didn't start this thread. Even Porsche admitted up to a 10% failure rate JUST FOR THE IMSB! Remember, that does not include all the other MOF that cause CEF. I think some are missing the point that in most cases you DONT know if you have a failing bearing until you replace it. Ideally you want your oem bearing to look perfect when you pull it. That's the whole point of doing it for PM and not after its failing or has failed. Your right in that I did not over use my 996 in two years but I spent that time studying the car and doing PM trying to prevent CEF.

My trojan will also apply a high voltage, low amperage charge to the keyboard whenever the operator adds "MOF" or "CEF" to a thread.

...still at it ha?... Wow!

If you bought an E36 BMW, the water pump's plastic impeller failed at <60k. If you bought a GM product with a Quad4 engine, the cam gears imploded. If you bought a Caddy with an HT4100, your camshaft lobes will fail prematurely. Late 90's BMW V8? Nikasil linings in your cylinders will wear promoting excessive oil consumption. Late model GM cars with failing key switches and "FlexFuel" pre-detonation problems. Late model Toyotas with the highest recall rates of any cars ever made. If you have a 944, you either just replaced the timing belt/water pump set, or it needs it currently. AMG Mercedes? Your ABC ride control needs more money thrown at it. I have more if you guys want? I'm sure many of you can contribute even more examples. Every single car has it's inherent flaws and all mechanical parts wear. There's examples from throughout automotive history of how things could have been better in retrospect. I love my 996 and will continue to just drive it worry free.

Maybe true but most of those problems don't cause the engine to self destruct and turn the car into a worthless roller. See the cost of a new 996 engine? It is now over $50,000!!! 99610099630 replacement engine (02 UP TO YEAR 03) 1 $50,069.14 M96.03 YEAR DESCRIPTION 2002-2005 3.6L 6-CYL (911 CARRERA 2/4/4S FL)

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Shut up and take my money! - YouTube

The nice thing about a DeLorean is it won't rust.

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You guys are looking at it all wrong. The whole reason that these cars ARE so affordable in the first place is due to the hysteria. I'd wager that if there was no hysteria, the car would have cost me an additional $10k at least when I bought mine a few years ago. If nothing else, I would say it would have been worth that much more. Also, KK does not speak for me in saying above that all 996 drivers are upset, his arguments are mostly flawed as is obvious to most of those who have been dealing with this drivel for the last few years. KK is the perfect example of paying top dollar for his car, barely driving it for two years, replacing any number of parts that didn't need replacing and then selling it for apparently low dollar. At the end of the day if you place some value on his time he probably easily spent the replacement value of the engine. Sound financial judgement, that. Bwahahahaha!!! If it's such an obvious flaw, one wonders why he ever bought the car in the first place. On top of that most of the arguments here from some contributors clearly indicate zero understanding of statistics, i.e. the clearly biased "sample pool" source of the failure poll itself, the statements indicating belief that every accident-totaled car would have had a failure, other statements along the lines of every 996 is doomed to fail eventually in some manner (really? So will ANY car) etc. I enjoy my car, it's not had an issue, if it does, oh well, I'll either fix it or replace it. Whatever. Can't take the heat, get out of the kitchen. And that quote of 50K for a new engine. Sure, whatever. The person who mentioned that is the guy who practically wanted to wed Raby last year, who can build you the engine of your dreams for a lot less, so with that option why would you buy a new one with presumably the same issue? There are so many straw men put up in this thread and board, you could feed a herd of cows forever with them. Going on, we keep hearing about the x number of "documented failure modes", sure, whatever, take it to Raby and get in line. That line is what, about a year long with 30 cars or so in the pipeline? OK, if 30 or so cars is a year's backlog for him relative to how many of these were sold, where's the worry? If mine is one of the small percentage to fail, maybe it'll end up at the end of that line, but the odds look pretty good from here. Even if it blows up tomorrow and I get $5k for the rest of the carcass, the $20k of value that is wiped out is not the end of the world. And if it is for anyone, they need to get out now, don't let a car ruin your life. Heck, if I had bought a new 991 back when I got my 996, I am certain it would have lost more than $20k in value in depreciation alone since then so any way I look at it, I am ahead...

I will be doing a prophylactic IMS soon from an indie who will charge about $2,000 using LN kit and an doing the necessary oil change. (I was surprised to learn from a local Porsche dealer that they will not do this service as the part is not OEM. WTF? They acknowledge there is a problem but won't do a fix that I am paying for?) I guess one question still out there: Are there any reports of LN failure?

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The last time I read anything semi-official (i.e. from someone who ought to know), there have been some LN bearing failures due to improper installation, which I can only assume means that some idiot used a hammer in an inappropriate fashion. As far as WalterRohl's comments about the "sample pool" - have you read the Porsche suit materials? If not, go find and read them. Porsche's claim of "under 10%" for single-row failure is consistent with the poll. Everyone: either change your bearing or don't - but please, for the love of God, put some miles on your Porsche today.

LN says there have been "zero" retrofit dual and triple row bearing failures, and 12 single row retrofit failures but they say some of those 12 could be due to improper installation.

That sounds consistent with what I've heard. Glad I have a dual-row '99...

The OP asks a relevant question which begs a response. Over the last decade, between immediate family members and friends, I've seen over a half dozen m96 powered machines come and go. I have experienced ZERO IMSB failures of any kind. Nor have I seen evidence of any RMS leaks, although 1 or 2 cars had previously replaced RMS seals. I do currently have a 996tt spotting my garage floor but thats another story As far as resale values are concerned the 996 has been and continues to remain better than average. Don't believe me? Do a comparison graph with a similar model year Jaguar XK. The value proposition is beginning to move beyond these cars however, as the c6 'vette and 996tt are just so full of awesomeness for the $. I personally would not even touch a car with a modified IMSB. I've heard WAAYYYY to many stories of engines exploding due to supposedly botched IMSB swaps. Imagine that, someone swaps out a perfectly good bearing only to lose the motor precisely because they tried to "fix" it. I personally would suggest buying a 3rd party warranty LOOOOONG before I would throw any money at after market parts for this "problem." And NO, I am decidedly NOT suggesting anyone purchase such a warranty.

Ok thats it im turning this into a boobie thread

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Couldn't agree more...

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I did and I will note that the statement "under 10%" encompasses the range from 0, i.e. none, to 9.9999etc%. Note that it does not say "at least 9%". You can turn a statistic into anything if you leave one end open... The statement does not validate the "poll". You could also make a poll asking how old the owners of 996's are. I don't generally answer those polls, if nobody in my age group answered for the same reason that I didn't then the data would show that there are very few owners in a particular age group, however we know that is wrong. For all I know the lawyers used the flawed poll in their data. The whole point is that this poll that is referenced is not of a random sampling of owners, the sample consists of owners that are far more into their cars and into the mechanics of them compared to the average owner. Most people do not search out a forum until they have an issue or question. Believe me, I never looked at the Honda Odyssey forums when we had one until something broke or I needed advice, same thing. If a 996 never needed anything fixed, corrected, or answered many of us would not be here, we'd be out driving the things or polishing them or whatever. However if something goes bang, many people will turn to the internet for answers and a large proportion will end up here. If you read the entire settlement proposal you saw that it will basically cost Porsche a very minimal amount once all is said and done. I'm surmising they went with it as it was the best solution for them, so they admit there is some sort of issue and then put the litigation and further unpredictable costs behind them. There are also many cases of people having their engines replaced well out of warranty or in other situations where the factory really had no obligation to do so. I do agree, it would suck it if happened to me. At this point in time, however, I'd suck it up and move on without it affecting me hugely or impacting my finances in a big way. And I am by no means rich, but I could stomach that loss. If that was not a possibility then I would seek to dump the car now, as KK did. I wouldn't keep whining about it for years afterward either, life's too short.

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I wonder what the sample sizes are for these cases. I'd guess there are FAR more single row replacements out there than dual, so it would be likely that failures would be greater as well, whether due to installation or faulty materials. Again, statistics. If the numbers installed are equivalent then 12 failures compared to none is a big difference. However, if there are 12 singles installed for every 1 double, then perhaps the law of averages will catch up and sooner or later ONE dual will fail, resulting in the exact same failure ratio. This of course assumes that every failure is actually reported.

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Ah, so it's cool if YOU make up the stats. Got it. More b00bies, please. This is kind of sad. The FIRST thing I do when I have picked the make and model of a car I'm interested in buying is to find and join the most active forum(s) for that vehicle so I can learn everything I can about (a) possible modifications/upgrades, (b) maintenance/repair issues to be aware of, and (c) start reading the FAQ/DIY maintenance threads so I'll have some idea what I'm doing when it comes time for brakes, oil, etc. Forums like Rennlist are fantastic for getting up to speed quickly with the specifics of a new vehicle, especially since the "handbooks" that come with cars are written at a fifth-grade reading level and assume that the average buyer has the IQ of a Golden Retriever.

Quotes source post: 11829932

Do you patronize your mother with those lips, or do you just save that tone for us?

Anti-IMS anxiety video. Watch after every KK post as an antidote. Seat commercial - YouTube

I have never been interested in watching a commercial for Seat until today. She puts the "hot" in "hot hatch..."

Quotes source post: 11829932

It appears bearing replacement is not a panacea. LN just told me they have a recommended replacement service interval for the classic single row of 4 years or 50,000 miles, and for the newer IMS Pro, 6 years or 70,000 miles. Doesn't give me a lot of confidence in their product if they need to hedge their bet like that. Does Porsche have a service interval on that part? LN also says that once you see those tell-tale shavings in your oil filter, they do NOT recommend the bearing replacement, as there will remain junk floating around in your engine that may ultimately cause the new replacement bearing to fail. I'm sorry I ever started reading these posts . . .

Pic deleted LOL

You might want to pull that one down - there's a little too MUCH boobie, which can earn you a ban.

I thought about that right after i posted. You are absolutely correct. Hey at least a few people enjoyed it for a few min. LOL

Quotes source post: 11829971

Hey, Schnell, I seriously do apologize if I came across as patronizing or negative in any way towards you, not my intention at all. It just bothers me when people take an informal "poll" as gospel and then regurgitate it ad nauseum (not you) or cherrypick replacement cost numbers (not you) to either make themselves feel better or just try to annoy others. I don't think I made up any statistics myself, just tried to show the fallacy of how they are (mis)represented here and elsewhere. I think people who are here regularly see through a lot of the hype but new(er) people or the casual visitor such as when someone like you is doing their pre-purchase research can easily get turned off, which IMHO would be a mistake. After all, we both still have our cars, we can't possibly both be wrong, could we? :-)

Quotes source post: 11830068

No. Porsche replaced your engine (if you were lucky), and gave you the middle finger (if you weren't). If Porsche admitted that this item was a wear item, the financial fallout could be disastrous. There will never be a memo from Porsche about the IMS bearing. They've moved on. If you don't like LN's bearing guidelines, don't follow them. You can still order the OEM bearing if you prefer. The fact that LN and Raby went on to develop "the solution" suggests that the IMS application is a crappy place for a single-row bearing, even if it's a more robust bearing than what was originally used. Yes, LN is (probably) a for-profit organization, but I'm appreciative that we HAVE a fairly robust aftermarket. I have owned cars in the past where the ONLY possible fix is installing a new OEM part - having options is much nicer than having no options.

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I saw that pic...chuckled. It was artsy!

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5chn3ll I don't believe you can order the OEM bearing from the factory.

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I thought they were still available (not from Porsche) - but if I'm mistaken, I apologize. I'm also willing to sell my (slightly used, but otherwise fine) OEM dual-row bearing to any interested parties. $50 shipped.

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LOL now your on to something.

Point of order, here fellas, but 996pp motioned that this damn thing should be turned into a boobie thread. The motion was duly seconded by Gonzo. Kalashnikov and 5chn3ll both voted in favor. So, as I see it, it's time to put a nail in this thread's coffin. johnireland - nice to have you here in the 996 forum, but please stop with the new IMSB threads. Any new posts in this thread should be off topic and include a boobie pic. I'll start. I like pudding.

damn....what kind of car was she selling...or grinding on??? I didn't notice

Quotes source post: 11830408

Couldn't agree more KC. I wish you all a very Happy Thanksgiving!

Excellent ^^^

Gonzo I see you were also some of the few that liked my turkey pic and decided to repost it. But Schnell is right that might get you banned.

Which came first, the IMSB or the Troll?

Not sure if I've replied before, but, no problems here. 2000 C2 w/55k mi.

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Holy double post! I didn't see your pic before it was gone...that was random. Love that photo, had it for a few years now, and I was sure I could convince the Mods it is "Art"...not ****. We have good taste in turkey! But you're right...why take the chance. A lot of free time for me the next two weeks and I'd hate to miss what IMSB thread gets posted next!

I've never posted a boobie pic on Rennlist before. Let's see...is this how you do it?

OMG! I love boobies!

I didn't bother to read four pages of posts on this topic, too much work. So let me just skip to my question: What are those? And, before you guys slam me, I DID do a search. All I could find was this: Acronym Definition RMS Root-Mean-Square (power measurement) RMS Richard M. Stallman RMS Records Management System RMS Royal Mail Ship RMS Radiation Monitoring System RMS Royal Mail Steamer RMS Record Management Services RMS Republik Maluku Selatan (Republic of the South-Moluccas) RMS Royal Microscopical Society RMS Raytheon Missile Systems RMS Records Management Society RMS Receivable Management Services RMS Royal Meteorological Society RMS Radio Marketing Service (Hamburg, Germany) RMS Railway Mail Service RMS Royal Mail Steamship RMS Rate Monotonic Scheduling RMS Rack Mount Space RMS Readiness Management Support RMS Royal Mail Service RMS Recovery Management System RMS Reconfigurable Manufacturing System RMS Rocky Mountain Slides (Salida, CO) RMS Rotating Magnet RMS Raw Material Supply RMS Russ Martin Show (radio) RMS Rubbermaid Medical Solutions RMS Russian Mathematical Surveys RMS Reconnaissance Management System RMS Recipe Management System (manufacturing) RMS Reloadable Motor System RMS Recovery Management Support RMS Rainwater Management Solutions RMS Rapid Message Service (HeyAnita RMS Revue des Math�matiques de l'Enseignement Sup�rieur (French: Journal of Higher Education Mathematics) RMS Repair Management System (various companies) RMS Remote Monitoring Subsystem RMS Rocket Management System RMS Ride Motion Simulator RMS Rapid Message Service (HeyAnita, Inc.) RMS Rake Management System RMS Rocky Mountain Semester (High Mountain Institute) RMS Richmond Montessori School (Richmond, Virginia) RMS Range Management Squadron RMS Roughness Measurement System RMS Redmax Management Suite RMS Remote Master Station RMS Routemagic Server RMS Raw Materials Surcharge (steel) RMS Rex Marechal Shapes (Berkeley Vale, NSW, Australia surfboard shaper) RMS Rapid Multilingual Support (DARPA Babylon program) RMS Roadside Mail Service (Australia Post) RMS Range Measuring System RMS Royal Merchant Ship RMS Roosevelt Magnet School (Peoria, IL) RMS Ruffing Montessori School (Cleveland Heights, OH) RMS Ramp Metering Station (traffic management) RMS Request for Merge Specification RMS Relocation Management Solutions (New York) RMS Redundancy Management Services (Telcordia) RMS Remember My Service RMS Routing Management System RMS Random Message Selection RMS Removable Memory System RMS Royal Mushroom Sirkus (theRMS album) RMS Rushey Mead School (UK) RMS Relational Management System RMS Recruiting Main Station RMS Rotorcraft Mapping System RMS Rapid Mobile Surgical (hospital) RMS Redistribution Management System RMS Reine Musikleistung (German: effective music output of speakers) RMS Requirements Mediations Service RMS Remote Maintenance Station(s) RMS Reliability and Maintainability Simulator RMS Resource Monitoring Subsystem RMS Radar Maintenance Spares RMS Reducing Metering Station RMS Retarder Modulation Solenoid RMS Ready Maintenance Stores RMS Regional Maintenance Shop RMS Regular Menu Staging RMS Rotary Mechanical Splicing RMS Royal Majesty Services RMS Rail Maintenance Service (KPR locomotives) RMS Report of Material State RMS Rich Message Service RMS Rappahannock Music Society (Virginia) RMS Radio Measurement Statistics RMS Reims Management School (France) RMS Return Management System (software) RMS Redundancy Management System RMS Retail Managed Services RMS Riverwood Middle School RMS Reference Member State RMS Return My Serve RMS Respiratory Monitoring System RMS Royal Military School (various locations) RMS Remote Measurement System RMS Rocks My Socks RMS Risk Management Solutions, Inc RMS Risk Management Strategy RMS Restaurant Management System (Point of Sale) RMS Revere Middle School (Richfield, OH) RMS Respiratory Muscle Strength RMS Rooms RMS Relapsing Multiple Sclerosis (disease) RMS Resource Management Services RMS Resident Management System RMS Revenue Market Share RMS Rada Mladeze Slovenska (Slovak: Youth Council of Slovakia) RMS Remote Management Software RMS Robinson Middle School (Plano, Texas) RMS Requirements Management System RMS Redwood Middle School (California) RMS Retail Management System RMS Remote Monitoring System RMS Resource Management Solutions (Spokane, WA) RMS Rights Management Services (Microsoft Windows Server 2003) RMS Rhabdomyosarcoma RMS Request Management System RMS Requirements Management System (National Imagery Collection Requirements) RMS Robotic Manufacturing System RMS Remote Manipulator System (Space Shuttle) RMS Remote Mine-hunting System RMS Reliability Management System (Western Systems Coordinating Council initiative for assuring reliable electric power) RMS Reliability, Maintainability, Supportability RMS Relative Market Share RMS Risk Management System RMS Revenue Management System RMS Revision Management System RMS Resource Management System Acronym Definition ISMB Intelligent Systems for Molecular Biology ISMB Istituto Superiore Mario Boella (Italian: Mario Boelle Top Institute; est. 2000) ISMB International Symposium on Magnetic Bearings (est. 1988) ISMB International Society for Matrix Biology ISMB Indian Standard Medium weight Beams (construction) Oh, and before I forget, I need to add this: .

Quotes source post: 11830842

Now THAT should get you banned!

4 years of ownership, not a garage queen, gets driven but not daily. Noticed oil at bottom of trans bell housing, did a little reading and used blue devil rms sealer and been bone dry since. Just went over 120k still on original IMSB which is dual row. Happy Happy!