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YOUR RESEARCHnewbie question about IMS
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Replace engines, they
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Read evidence and context
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Performed · outcome unconfirmed
When Porsche warranty replaced the engines, they used the larger bearing motors.
Leading evidence: 'Replace engines, they' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill me in a bit' (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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Performed · outcome unconfirmed
When Porsche warranty replaced the engines, they used the larger bearing motors.
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.
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Suggestion · Original poster
Can someone fill me in a bit on what that means and whether or not it's ok?
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Pelican Parts: 1 discussions
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I'm looking at an 02 C4S and the seller has said it has the "OEM large style bearing like the 997". I speak British and Swedish when it comes to cars but not German (yet). Can someone fill me in a bit on what that means and whether or not it's ok?
Thanks
that comment is a bit misleading but take my comment with a grain of proverbial salt. I too am currently questioning my bearing as im new to the IMS world myself.
From what i think i understand the m97 (997) engine has a larger IMS, but its not removable without splitting the case. the 02 should have an m96 which is smaller in diameter and can be removed externally. The only way i would know to put a larger OEM 997 bearing in it would for it to have an engine transplant to an M97 engine.
If the car has a factory replacement engine, then it does have the bigger bearing. Get the VIN. If it has an ‘A’ in the sequence, then it is a replacement engine.
A normal ‘02 could have either possibly. The previous owner said it had the large, non-serviceable bearing. When Porsche warranty replaced the engines, they used the larger bearing motors.
I agree with tonythetarga. I bought my one owner 2003 C4S in 2013. The very first thing I did was take it to Chris's German for the IMS retrofit. We were all surprised to find out the engine had the larger single row non- serviceable bearing. Chris's performed the "while your in there service". At my next oil change I took a photo of the engine serial number - M96/03AT66569204 and confirmed that my car has a 2005 factory rebuilt. The A designates factory rebuilt and the 5 indicates year 2005. One thing I can say is it's always been a marvelous runner motor. If the engine in the car you're looking at has this version of the IMS bearing then I think it's a positive thing.
Thanks to all. The seller has been very forthcoming with info and it seems to mesh with what I’ve learned here. The engine VIN begins M96 T665 so it looks like I’m in good shape to proceed. Thanks again. I’m sure there will be more questions to come.
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