I recently to my 1980 Corvette to cottman transmission and they replaced the
clutch assy throughout bearing and pressure plate. The shaved the Fly wheel
said that was normal. When I picked up the car on Friday I had a low end
vibration when letting out the clutch. CT says there is something in the
rear that's causing the vibration. I didn't have the problem prior to the
car going there. Is this another CT ploy to get more money? They had to have
removed the drive shaft is it possible they removes something to make the
car unbalanced. What are your thoughts
Sounds like maybe some grease on the flywheel surface and so you get clutch
chatter as the clutch disc tries to grip the flywheel.
If the vibration was in higher RPMs, then the clutch pressure plate was not
balanced to the flywheel, which very few places do. The assume that the
pressure plate manufacturer's balance of the pressure plate is sufficient.
I have typically found them many grams off.
I think the driveshafts are indexed on C4's but not on C3's.
But with what you described it ain't the driveshaft anyhow...
Like Tom said it's a good bet that there was grease that got on the
fibers of the clutch plate.
If so it will have to be replaced, can't be cleaned well enough. It also
could be a crap job of
turning the flywheel, (slight wobble in the lathe, too deep of passes
where the bit chattered
against the flywheel, or knocked off a weight, etc)..... This is on
their shoulders, no doubt to me..
Bart Fitzpatrick wrote:
I talked to the cottman manager and they sent out the fly wheel to be shaved
but didn't tell them it was for a corvette. He will check with the machine
shop tomorrow and then he offered to re-balance or replace the fly wheel.
Thank you for your help! I didn't have this problem before they replaced the
clutch assy and adjustment arm!
This is a multi-part message in MIME format.
Content-Type: text/plain; charset=us-ascii; format=flowed
I would personally put my eye on the clutch disc also and look for
Bart Fitzpatrick wrote:
another possibility is they may have let the Trans hang from the
clutch disc splines before they mated the Trans up, that can put a
bend in the disc. some times they can be a real pain to get mated up
and there is a temptation to remove the transmission jack so you can
"jiggle" the Trans, just a thought, please do not ask me how I know
about this. Greg
On Wed, 28 Sep 2005 22:26:13 -0700, "Bart Fitzpatrick"
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.