jeff spahn

Does anyone have an idea of the mystery sound I get when the car is cold for more than a few hours.

Greg Brown did the trans install 6 years ago or so. This tells us it was installed right.

17prospective buyer

Lol thrust bearing?

jeff spahn

Thrust bearing on the torque converter? I don't know anything about them. I know my thrust bearing on the engine is fine.
I just had the engine apart and it was in great shape. I checked my flex plate today and it is dead flat.

SeanR

Check the torque on the rear flex plate bolts. Had a car with similar sound and two of he bolts were loose.

jeff spahn

I am going to sound stupid but how do I get to them?

MainePorsche

Not much room to work with on this one.
There is a rubber cover that you remove and it's one bolt at a time. Rotate engine as needed. Repeat.

jeff spahn

Is it that little cover on the torque converter that sits at a 45 degree angle or so relative to the ground? Not the clamp cover under the heat shields right?

MainePorsche

Jeff,
There should be 3 holes in the converter dome each with a rubber stopper (#15).
You will only be able to get to work through the bottom hole one bolt at a time.

SeanR

^^ what he says.

Had a potential customer talk to me one day saying the Porsche dealership quoted him a bit over $5k for a transmission and a load of labor on top of that and I told him I'd take a look. 30 minutes later I put in new bolts and blue locktited then in and he was good to go.

5 years later the noise is still gone and the trans is just fine. Two of those bolts were moving around in the bell housing and three were loose.

jeff spahn

#15 is the cover I was speaking of. I'll put the car in the air tomorrow and take them out, put loctite on them and tension them up. See if that does the job. Then again, I'll probably get a huge to do list from Sherry too so I might not get to it til Friday.

MainePorsche

Best wishes.
Hope it finalizes the sound.

GregBBRD

Torque specification is difficult to find/incorrect. Those bolts are grade 12.9. Torque to 24 ft. lbs.

MainePorsche

In this, it says 46 Nm (34 ft.lbs)
Thumbnail page 33, pdf page 60 - 61.
https://docs.google.com/file/d/0BzC7...it?hl=en&pli=1

Bill Ball

If it's not the bolts already mentioned (most likely), it could be one of the part #6 bearings going south.

jeff spahn

Those are the carrier bearings that are spoken of being replaced in Dwayne's write up?

I wonder if they were replaced as part of the transmission install by Greg?