JERSEYJOE1

I am looking at a 2005 C$S with 25,000 miles. Looks decent and dealer has a lot of docs. What to look for? Heard there was an issue with Cam Bearings????? or is it only on high mile cars?

ANY ADVICE IS APPRECIATED. Oh it's a Tiprtonic model.

Efferalgan

You need to post it in the 997 section.

Hula

Not Cam Bearings. It's the Intermediate Shaft (IMS) bearing. The timing chain connects the crankshaft to an intermediate shaft. Another timing chain connects the intermediate shaft to the camshaft. This bearing on the IMS can fail with little to no warning which can destroy the engine. A Google search for "IMS Bearing" will bring up a ton of information. It affects all C4S models from 1999-2008 in varying degree. There is a fix which, hopefully, is reflected in your documentation. Otherwise budget $2500 for bearing replacement.

I wouldn't part with any money until you have a Pre-Purschase Inspection (PPI) by a Porsche specialist.

The admins of this board have a buyers guide to the 997.1. "997.1" is the internal model code used by Porsche for models built between 2004 and 2008.

https://rennlist.com/forums/997-foru...ers-guide.html

TheBruce

Take a read through this to get your bearings.

https://rennlist.com/forums/997-foru...ers-guide.html

A 2005 needs to have the IMS bearing replaced, unless you have records showing its already been replaced. This is critical. A 2005 small bearing IMS car has a 10% chance of failure and if it fails, your engine is toast. However, once replaced you can expect a long and happy life with it. Having a tip complicates the matter as most 2005's have the IMS replaced when changing the clutch.

Tiptronics also trade a steep discount to manuals, as do 2005's due to the IMS issue with them (they were upgraded in 2006 so it was largely not an issue for 2006-2008 cars). So you should expect a healthy discount on this car (~15-20%) for those two in combination vs a manual 2006-2008.

MexicoBlueTurboS

If it's the small bearing - in my opinion that's the smartest money as long as you get it replaced ASAP. Like others have said - read the Buyers Guide sticky for 997.1s - you will be a better horse trader when you're done.

sandwedge

Are you looking at a 996 model C4S? Didn't think the 997 C4S was introduced until 2006. The build year may be late 2005 but I don't think I've ever seen a 2005 997 C4S listed for sale or otherwise.

kellen

Think you are right.

OP you have a link?

Chris M.

Yep. An 05 C4S is a 996.

TommyV44

What a catch! You are Da man!

Tom

TheBruce

the force is strong with you,