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YOUR RESEARCHTransmission is out. Should i replace the RMS and IMS?
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Check rms and ims and they both looked fine
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He also checked the RMS and IMS and they both looked fine with no sign of leaks.
Transmission is out. Should i replace the RMS and IMS?
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Leading evidence: 'Check rms and ims and they both looked fine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check rms and ims and they both looked fine' (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.
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The only thing that irks me is I replaced the oil and filter of which the shop had to change it again with only 40 miles on the clock!
Transmission is out. Should i replace the RMS and IMS?
Replace when car was 22,300miles, currently at 30,600miles)
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Then took a look at the clutch (from PO service records, RMS and clutch was replaced when car was 22,300miles, currently at 30,600miles).
Transmission is out. Should i replace the RMS and IMS?
Use swears by royal purple motor oil
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The Indy shop that I use swears by Royal Purple motor oil.
Transmission is out. Should i replace the RMS and IMS?
Inspect ims bearing i now have some piece of mind
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Suggestion
After inspecting the IMS bearing I now have some piece of mind.
Transmission is out. Should i replace the RMS and IMS?
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I just got a '99 996. It only has 47K miles. Took it in because the clutch was making a noise. After a review the mechanic has advised replacing the clutch and a few bearings in the transmission. He also checked the RMS and IMS and they both looked fine with no sign of leaks. My question is should i follow the 'if it isn't broke don't fix it' approach or should i be proactive and replace them both since the transmission is out anyway?
Many on this forum would tell you to do the seals and the IMS bearing, , while the labor charges have already been charged for the clutch job.Not sure what I would do, your Porsche has 5k miles less than mine, but my clutch seems fine. Neither my RMS or IMS are leaking so far.
FYI, the IMS doesn't "leak" - at least not on the outside... I suppose you could make an argument that oil leaks past the bearing seals and into the shaft.
Personally, if i was "in there anyway" I'd change them.
Yes, grasshopper, the Illogical Motion Sensor can sometimes move in the wrong direction. This is the result of the Force being misapplied by the members of the driver's team. Should that happen, a contusion can form in the outer part of the sensor. The sensor, knowing that this is an illegal motion, will stop the engine from turning by throwing out little ***** of steel. This prevents the illegal motion from continuing, preventing the issuance of a ticket by the local PD (porsche detective).
As we know, no one wants a ticket!!! Your best solution is to replace the Illogical Motion Sensor with one that doesn't recognize the direction of rotation. In that case, there will be no misapplication of the Force, and the steel ***** remain inside the sensor, thereby preventing any illegal motion, and unexpected shutdown of the engine.
I hope that this clarifies the situation. For further detail and pictures, please see chapter 19, exhibit 243 in the Repair Manuel.
larry
With the IMS you must have the approach of "if it isn't broken it will be". Those who wait are playing russian roulette with all 6 cylinders of their engine.
If you are that close and don't do the procedure think about how much you'll hate it if you do have a failure.
I get very nervous when people tell me that I have to spend $1,500 on a preventative measure. If I have not opened the engine, I don't think that I would do it as a protection against "what if?" In your case, you already have the engine and tranny apart. You have already spent the money to get to the heart of the matter. I would spend the extra money for the LN bearing and have it replaced. At this point, I think that it's cheap insurance.
larry
Maybe I'm misunderstanding your post, but mine definitely did. The 'leak' didn't make it outside and on to the garage floor, but the seal definitely failed. This is a pic of what they found when they dropped my motor to install the bearing upgrade.
Yes true, I do want to point out that I am one whose in the IMS retrofit club, but still feel uneasy with the way some of these threads go.
Oh well, that's all I got to say about that....
I 'm not sure where to post this, so this thread seems as good a place as any. I just had my 30,000 service done on my 2004 996 Targa. The Indy shop that I use swears by Royal Purple motor oil. He uses 15W40 when he changes the oil. He said that he has only had one customer that has experienced problems as a result of the IMS failure. He said that this customer didn't change his oil very often. He recommended to me that if I'm going to put 20,000 miles on the car annually, that I could get my oil changed every 7,500 miles.
He told me that he doesn't know why he has so many fewer failures than is generally reported. The failure of the IMS has been reported to be related to a build-up of acidity in the oil as a result of infrequent oil changes, or stop and go driving, or low mileage, or . . . . . . . . He feels that there is a chance that Royal Purple oil is so much slipperier than other oils that it helps keep the IMS healthy, thereby postponing or eliminating any potential problems.
OK, the evidence is anecdotal. I don't know if it really helps or not. But his experience with the lack of IMS failures on the part of his customers could have some correlation to the type of oil that he uses. I don't know for sure, but at $8.50 a quart, I'm willing to spend the money on fancy oil rather than break down the engine for a preventative operation.
larry
I did an oil change 2 weekends ago, opened up the oil filter and sure enough there were metal filings in the filter. The car only has 44K on the clock. So off I go to a Porsche specialty shop, had the RMS, the clutch and IMS bearing replaced. Even thought the RMS was not leaking, and the clutch was still in pretty good shape it made no sense not replace while the trans was off. Sure enough after pulling the IMS bearing, the bearing was a little loose, and had metal filings on the back side. The shop also pulled the pan and purged the engine of the metal filings not captured by the filter. After inspecting the IMS bearing I now have some piece of mind. There were no tell tale signs other than looking for the metal in the oil filter. The only thing that irks me is I replaced the oil and filter of which the shop had to change it again with only 40 miles on the clock! The replacement bearing was a double row bearing from L&N for $596 plus shipping. Shop also stated they have never had a failure with the L&N bearing.
Kevin,
Well, I'd say that you were lucky that you examined the filter when you did. I wonder how many miles you had left till the ultimate implosion. It is interesting that you examined the filter. L&N has a filter mod that replaces the cartridge filter with a "spin-on full flow" filter. My wrench said that's OK, but then you lose the ability to unroll the cartridge and examine it for shavings. He does that as a matter of course. I was thinking of doing the L&N Full Filter mod, and they recommend using their magnetic drain plug, which will collect some of the debris - if there is any.
But, I'll guess that your experience proves that you don't need a high mileage car to run into IMS problems. What oil change cycle had you been using? What year is your 996?
Of all the miserable IMS failure stories, it was good to hear of a successful one - where prudent evaluation saved your engine. From that point of view, I would be less concerned about flushing "new" oil down the drain.
larry
As soon as I got my 3.6 996 this summer, I immediately took it to Callas Rennsport in Torrance, where I had them change the oil, perform the LN Engineering intermediate shaft upgrade, and replace the rear main seal. The car was not leaking oil prior to this or giving me any problems. I did it as preventative maintenance.
I would recommend doing this if you want piece of mind for your M96 engine.
I am in a similar situation as I was preparing for an oil change, notice a little oil, no drips on the ground and mechanic though RMS. Took it apart and it looked exactly like BruceP's. The RMS was alright.
Then took a look at the clutch (from PO service records, RMS and clutch was replaced when car was 22,300miles, currently at 30,600miles). It appears the clutch was not replaced as per service records. Recommends I change the clutch now as well though since opened.
Question..
Should I replace the IMS seal with the seal from Pelican/Porsche or go for the LN IMS?
The clutch and flywheel, any recommendations?
An oil change is changing for the worse
I would replace the IMS bearing with the retro kit from L&N, and the RMS too. Do it once and then enjoy the ride. Mine only had 44K on the clock, and the bearing was removed due to my finding metal in the filter. The bearing once pulled was loose and had shavings on the back side. Not failing yet but on it's way. The clutch and RMS were fine, but had both replaced!
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