gomez123

HELP

Landseer

Am not seeing anything out of the ordinary. The pins I think are for factory tool to read timing, don' see where they are hitting anything. Unlikely for 84 to suffer from thrust bearing failure. To check tt bearings, disconnect back coupler too and feel it when you spin by hand. Constantine is best guy to comment further, I'd use his superbearings if tt Bearings are reqd

Landseer

Also, can hookup exhaust and run motor with tt disconnected to evaluate for engine or accessories noise. Also, you can take a hard look at rear axles, a common area for wear issues.

gomez123

Doe's a 85 have digital ignition. The pins are bent over and cutting into the bellhousing?

gomez123

Why are there pins like that on a 84?

gomez123

In pis 5,6,7 you can clearly see the pins on the flywheel cutting the bell housing like a lathe.

Landseer

I see clearance cuts made for the pins and no evidence of any scraping. Its old corrosion. Where do you see current contact?

Not seeing bent over pins. (is it me?)

Will pull out some old pictures tonight to see if I can show same on my car....been so long my memory is foggy.

Does anybody else have pics of 84 auto flywheel to corroborate???

Mrmerlin

nothing to see here, it looks normal,
the pins are for the aft trigger sensor to read the timing at the dealer,
the cutouts are machined into the bell housing .

gomez123

So the pins are unnecessary? The left pin in the photo is bent downward and was scraping the top of the bell housing. How doe's the TT bearing look to you? I disconnected the flange from the flywheel and when I turn it it makes a strange sound like marbles rolling around in water. I hope this is the cause of my vibration in the driveline.

scraping the top of the bellhousing


relationship of flex plate and the scraping


can you see anything unusual in this shot of the bearing

Mrmerlin

tap the pin back straight, it will only serve as a balance weight for the flywheel at this point.

The TT bearing looks original and thats dried grease on its seals probably time to replace the bearings.

I would consider Constantine's bearings as they are much stronger than the originals

gomez123

Thanks the whole tube is going to Constantine for the rebuild. He's a great guy he spent almost an hour talking to me a newbe 928 guy.

gomez123

Going with the complete drop. Only way to go after all the input I've received.

Thanks again

Landseer

Consider regrease and reboot of back axle cv joints.

gomez123

Axle / cv joint rebuild is in the plan along with a good cleaning, shocks,converter bearings,front pump seal and diff fluid change etc.....
Sending the tube to Constantine for rebuild.

dr bob

Look carefully at the drive flange at the torque converter end. You'll have it out for the converter housing bearings. Loose rivets there get replaced with hardened bolts to solve rattling and vibration problems.