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YOUR RESEARCHLocking cams question
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Replace on the 996
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Performed · outcome unconfirmed · Original poster
Yeah, when I posted that, I wasn't aware of what IMS stood for and the first time I looked it up, it was mentioned that the IMS bearing in the "transmission" needed to be changed on the 996.
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Suggestion · Original poster
I'm a bit confused on the locking of the cams in order to drop the transmission and change the IMS.
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Suggestion
Please don't take this wrong but to get into this engine and replace the IMS you REALLY need to know what you are doing and, as important, why.
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Performed · outcome unconfirmed · Original poster
Yeah, when I posted that, I wasn't aware of what IMS stood for and the first time I looked it up, it was mentioned that the IMS bearing in the "transmission" needed to be changed on the 996.
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I'm a bit confused on the locking of the cams in order to drop the transmission and change the IMS. My car is a 2000 tiptronic and the workshop manual doesn't mention this when outlining transmission removal. In fact the crankshaft needs to be unpinned and rotated to access all of the Torque Converter bolts.
What exactly am I missing here?
The cams don't need to be locked until after transaxle removal. The cams are to be locked before you start removing tensioners in prep for the IMS removal.
Once the transaxle is removed and you are ready to start the IMS procedure, pin the crank (as stated in a previous post) at TDC, then lock the cams, mark where the cams are aligned in case, then pull the tensioners.
Uhmmmm.....the OP should find someone that know a bit more about cars or this will quickly turn into a disaster. He is asking questions that makes the hair on the back of my neck stand up.
Vince, I hate to tell you but I had the exact same reaction as Imo when I read your questions. Please don't take this wrong but to get into this engine and replace the IMS you REALLY need to know what you are doing and, as important, why.
It's no crime to not have this down but this would be one instance where you should either not touch it or pay someone to do it. This will end badly to attempt this without a clear understanding of the what and why.
I would agree, and having done cam timing on valve interference engines on the 3 F-cars that I own numerous times for the past 20 years, I'd say that I'm pretty much capable. However this is a P-car and my questions are more or less meant as probing questions, as I am new to the brand. Not "how do you do this..."
Its hard to interpret tone and even intention in the written word, but when you see remarks like dporto's, well then you understand why those who actually have something to contribute to this forum don't always stick around. IMO
To address OP's initial point: The reason it's not in the book as part of the process for removing the transmission is because it's not necessary to do when removing the transmission. Why would it be?
Yeah, when I posted that, I wasn't aware of what IMS stood for and the first time I looked it up, it was mentioned that the IMS bearing in the "transmission" needed to be changed on the 996. After ChicagoSpeed996's post, a light went on and I realized that IMS stands for intermediate shaft.
Imagine dropping the trans and looking for the IMS cover on the trans itself.
In this instant I wasn't trolling. What you wrote and how you were asking those questions were alarming to me and pointed in a direction of a person that has very limited understanding how engines work in general. Since you are new to these engines (I was too 3.5 years ago) but not new to wrenching, the best thing to do is read, read and read even more. There is more than enough information on Rennlist and on the rest of the web that you can get a very good idea how these engines are designed (really not that much different than any DOHC engine). Do this before deciding what and how to do it. THEN if you have questions, by all means post them and I or others that are willing to share the information will help you.
