27 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHquick question....
Leading reported evidence
Replace imsb
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The PO of my car was told that by the dealer that they changed his IMSB, but none of the receipts noted that it was done.
Leading evidence: 'Replace imsb' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust some' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
Yes, he likely knew that they were due to be changed soon.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
The water pump was changed at 40K and the clutch was done at 60K...
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
It looks like the camber could be adjusted some to make for even wear- but I do not want to mess up the handling.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
That said get a good alignment shop to check/align the car.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
IMO with a unknown clutch I'd suggest checking the oil filter every thousand miles or so and inspecting for shinies and either changing the IMS with the clutch or changing it at the first sign of problems.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
IMO with a unknown clutch I'd suggest checking the oil filter every thousand miles or so and inspecting for shinies and either changing the IMS with the clutch or changing it at the first sign of problems.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
IMO with a unknown clutch I'd suggest checking the oil filter every thousand miles or so and inspecting for shinies and either changing the IMS with the clutch or changing it at the first sign of problems.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
27 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So, really stoked. I probably did not get the best deal in the world but Im HAPPY HAPPY. This is a 2005 C4S with about 85K miles and is very clean inside and out. I bought it from a guy that had it for about a year, the previous owner had bought it new and had it for 9 years. The previous owner took it in for all scheduled maintenance and this is listed in the Carfax. The water pump was changed at 40K and the clutch was done at 60K... I called the dealer to ask if the IMS bearing was changed as a part of normal maintenance.. and he could not find it in his notes.
If the previous owner was religiously maintaining this I would think that he would have had it done...... especially when the clutch was done.
I was going to take it in and pay for a local Porsche dealer/ independent look to see if it had been changed. Do I need to? OR should I assume (hate that word) that this was looked at based on how well the guy took care of the car?
Welcome to the fold, no one can answer your question other than you or perhaps the first owner (If you can contact them) its got to 85k without loss it seems, & there are some on here well over 100 - 150k So you have to do what you feel is best. Perhaps it may be suggested you have a good look at the oils on a service, pay to have IMS bearings and clutch changed now rather than wait - it might depend on what you are going to do with the car and how much cash you have. If the engine breaks for what ever reason can you afford to fix it?
Drive it enjoy it - do what you think is best - O_Sr
I would suggest that the PO was simply a NORMAL 996 owner who never even heard of the rennlist board and therefore never have heard of the hype surrounding the failure of the IMSB. The PO bought the car 'new' so why would he even know that the failure existed. The bearing has lasted so far so don't even worry about it. He bought one car of the 95% of all 996 cars that never failed in this department. Have fun.
Thanks! I have decided to go ahead and take it in. An ounce of prevention..... I have completely enjoyed the car to this point and really want to keep it for many years to come. I have read so much on these forums and appreciate the knowledge everybody has.
"Normal" people are increasingly aware of the IMSB replacement practice, as evidenced by the sellers including info about IMSB replacement in print ads.
OP, if one of the owners had replaced the bearing with an LN bearing, the barcode should be on the door jamb and/or in the owner's manual. I don't know whether any of the other bearing replacement kits include them. Even if the sticker was present, it wouldn't tell you when the bearing was replaced.
Hurdi, I know we're buddies now - but why do you persist on including bullsh*t statistics in your posts? You don't have any idea what that number is, so why do you think it's helpful to include "Hurdi's Random Statistic of The Day?"
OP, regardless of your bearing situation...
PostYourPics.gif
I did the same thing, as Amex gave me a early gift of a higher limit.
In hindsight since the bearing and clutch was fine, although prevention, it was more or less a waste of $2200 that I could have saved or spent in other places.
IMO with a unknown clutch I'd suggest checking the oil filter every thousand miles or so and inspecting for shinies and either changing the IMS with the clutch or changing it at the first sign of problems.
Unless you're in a position where $2k means less than it does to me, in which case then you should go nuts and do what you want.
For what its worth even if the PO did replace the bearing with an upgraded one they all have a finite lifespan in years/miles. So if you can swap it out when its new clutch time, its a good insurance policy
Here are a couple of pics I took... the one from the distance in my garage is "A winter to remember". I took it out today for a nice 30 minute drive to nowhere... The speed is intoxicating... I am really enjoying this car!!!
^^^ Don't forget to post your pix in the "Show Us Your Grey Car" thread. That way, you can see a whole bunch more cars that look exactly like yours, and they can do likewise.
There weren't no sticker put on my car when I had the LN bearing installed. Someone named
owes me a refund.
As much as I hate to side with Hurdi, I tend to agree that the vast majority of 996 owners have never heard of an IMSB.
Ah, to be able to sleep with such naive bliss!!!
Schnell you say "Hurdi, I know we're buddies now - but why do you persist on including bullsh*t statistics in your posts?
You don't have any idea what that number is
, so why do you think it's helpful to include "Hurdi's Random Statistic of The Day?"
My question is... Do you know?
OK- so made a couple of decisions... The first one was to put clear LED side markers on and they look great. The second one is that I am going to ignore the whole IMS issue.... I changed to oil myself last week and cut the filter up. There was a few small/tiny speckles of non-ferrous metal but overall very clean. The water pump was changed 10K miles ago and the clutch about 20K ago. I will take it in this spring and get the 100K maintenance done and when the clutch is done next time I will get the IMS upgraded then.
Going to figure out what to do with the stereo- for now got a FM transmitter for my iPhone and will see how that works. Really would like to get navigation/ custom radio in it at some point. Suggestions (has been gone over several times here, I know) Kinda looking at things like an old home- upgrade as I go.
100% of all 996 owners are unsure where to put cell phone.
98% of all 996 owners have heard a Kenny g song.
90% of all 996 owners agree ice cream is cold.
86.5% of all 996 owners have sharted.
64.5% of all 996 owners have have an allergic reaction to orange side markers.
Oops, overlooked this opportunity to argue with your terribly mangled quote.
No, nobody knows. I don't claim to know; what I don't like is that you throw the 5% number around like it's fact. People come here for information, and when you just serve up the same bogus number over and over because it makes you feel better, you do those folks a disservice.
I also don't understand your need to insist that this is a static number when we repeatedly see evidence to the contrary.
OP, do whatever feels right. I ignored the IMSB for a while in my 996, but finally addressed it when my clutch slip was no longer tolerable. I never retrofitted the bearing in my Boxster...I might have eventually, but I when I saw my 996 on the internet, the 986 got kicked to the curb.
FWIW:
The PO of my car was told that by the dealer that they changed his IMSB, but none of the receipts noted that it was done. With that piece of information, my mechanic strongly recommended replacing it. The only way to absolutely know if it needs to be replaced is to just take it out and look at it. Once it's out, you may as well put a new one in anyway.
When mine came out, not only was it the original, but it was missing one of the seals. It was pretty close to toast.
I'm glad the original took the car to 150k, but I'm also glad that I can feel slightly more comfortable with my upgraded and (sort of) warrantied bearing.
I would say to save up and plan on having it done, whether sooner or later. You could also debate whether or not you want to do the clutch, flywheel and AOS at the same time, since you can probably save a little on labor doing it all at once.
Sounds like it might have been a previous owner who reads UK sites. Seems removing one seal is a recommended action by some major tuners in UK. Do a search on 991uk.com for Hartech.
Went ahead and got the IMS, AOS and RMS done, Precision Motion in Colton/Riverside was going to do the clutch if it needed too but they said it looked brand new so saved some change there. But, the inside (Like very very inside bordering side wall) of the rear tires are worn down so much the metal is showing. Having Sumitomo HTR Z III's put on tomorrow. What I saved on the clutch is being spent on the tires.
Now- going to spend some time going over this site to see why the insides of both tires are so worn compared to the rest of the tire. This is likely why it pulls hard to the right all the time- no matter what way the street is graded.
Really digging the car and all the information on this site. Really nice that I found a local Porsche shop too!!!
Depending on your camber settings and your driving style, the 996 will eat rear tires. Negative camber will cause the inside shoulders to wear - and if you don't get down and inspect the tires properly, they will seem just fine...
It seems unlikely that someone who was fastidious about taking the car in for regular maintenance wouldn't be aware that the tires were compromised.
Yes, he likely knew that they were due to be changed soon. Other then the first 1/2" of the inner portion of the tires they are in great shape. On any of my other cars I would say they have about half their life left. It looks like the camber could be adjusted some to make for even wear- but I do not want to mess up the handling. If it pulls rights when the new tires are on I will take it to the dealer for a 4 wheel alignment and go from there.
By the way- I pulled the "pumpkins" off as well as the third brake light and put clear LED's on. Looks sharp.... Next up, when the wife permits, will be the gundo hack. She said I was on "spending restriction" until summer. We will see about that!
Mismatched/excessive rear toe will eat the tires quicker than negative camber. That said get a good alignment shop to check/align the car. IE: 4 wheel alignment.
The tires- again, plenty of tread in the middle and outside but inside is torn up. Will see locally in the San Bernardino area where to go for an alignment.
C4S has larger track and stock alignment is a bit aggressive with camber and toe settings. If the car is lowered it will also increase the neg camber. It can be dialed back with toe and camber settings but you would need to tell your alignment person you want more tire life and not to use the stock settings. All though doing this, you give up the feeling of how people comment that a C4S "drive on rails"
