Using Durametric to Detect IMS Bearing Weakness

[JFP in PA]

Originally Posted by navyc130fe

I have a deviation of 2.0 and -6.0. I'm guessing this is bad.....?? Should I flatbead it to my mechanic??? What say you Boxster Gods???

Don't panic just yet; if the values are steady (not swinging back and forth and idle), it is probably just wear on one of the tensioners, chain paddles, or a VarioCam unit. These are problems that can be addressed when time and funds permit.

If the deviation values are swinging wildly, shut the car off and call the flatbed.....

[jaykay]

There is mode that can plot the deviation in real time as you idle. As far as I recall you call up cam one and cam two. The display seemed accurate enough to show variance in deviation; you should have flat lines for both parameters. There is also a numerical display that can keep your eye on

[navyc130fe]

They were rock steady at idle. No deviation at all, let run for 5 minutes. I am still contemplating the IMS/RMS upgrade as a precaution. I have a mechanic (Provost Motorsports) who runs a $2k special to replace. Any idea on the price of the tensioners, etc.?? Thanks for the replies!

[jb92563]

I checked my deviation today and I get -4.5 and -6.3.

It is rock steady and does not fluctuate.

Sounds like its slightly out of spec.

What does it mean, timing chain is a little loose?

How do I correct that deviation?

Do i need new chain guides or tensioners?

I have a 2001 S with the 3.2l and 60K miles.