Clutch/Trans Grinding
Aug 2, 2008 | 09:04 PM
Thread Starter
Instructor
Joined: Mar 2007
Posts: 125
Likes: 0
From: WI
Clutch/Trans Grinding
Sorry for the post as I know this has been covered plenty.
I have been hearing a grinding(metal on metal) when the clutch is about 3/4 the way off the ground when putting in gear.
The grinding doesn't happen all the time, but when it does it is terrible. I have stopped driving the car until i can resolve this issue.
From what I have read on the forum, this is a pretty common issue on C5s. My question is what exactly do i need to replace.
Right now I plan on ordering the following:
Spec stage 1 clutch
New Master
New slave
Pilot bearing
Should I also be replacing the flywheel? Is there anything that I am missing?
Thanks for all of your help in advance.
Aug 3, 2008 | 06:29 PM
Thread Starter
Instructor
Joined: Mar 2007
Posts: 125
Likes: 0
From: WI
Aug 3, 2008 | 11:08 PM
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Depends on what condition its in. If it has heat marks and small heat cracks, either resurface the OEM disc or replace it.
BC
Aug 4, 2008 | 01:04 PM
Drifting
Joined: Feb 2007
Posts: 1,446
Likes: 0
From: Cranford NJ
It's pretty hard to diagnose things like that over the internet.
Where are you located?
Max
Aug 4, 2008 | 11:01 PM
Thread Starter
Instructor
Joined: Mar 2007
Posts: 125
Likes: 0
From: WI
WI. Not really any good shops up there that I know of.
Aug 5, 2008 | 11:11 AM
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
Are you sure it is the clutch and not the transmission? Another common problem is bad sychros.
Aug 5, 2008 | 01:38 PM
Pro
Joined: Nov 2005
Posts: 597
Likes: 10
From: MO
10-4 on that, just had my 4th gear syncro replaced on my '02 Z06. Thank God for extended GMPP.
Aug 5, 2008 | 06:42 PM
Thread Starter
Instructor
Joined: Mar 2007
Posts: 125
Likes: 0
From: WI
Not really sure which one it is.
I would think its the clutch. The grinding happens in gears 1-4. It does not grind all the time.
We changed the clutch fluid and the grinding stopped until it got black again.
I'm going to bleed the fluid tonight(Ranger Method) and see if i can get the grinding to stop again temporarily.
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Aug 5, 2008 | 09:57 PM
Thread Starter
Instructor
Joined: Mar 2007
Posts: 125
Likes: 0
From: WI
So I did the Ranger Method. Tons of fluid was black. Had to do it about 7 times till I could get it to stay clear.
Anyway took the car out for about a 20 mile drive. Did as much stop and go driving as possible. I could only get it to grind when the car was going up a hill from a stop.(At least 99% of the time)
It grinded way less. When I got back home the fluid was then black.
Can someone explain to me what I need to do/buy to fix this. Could if be a shifter alignment. I was thinking about checking that next.
All help is greatly appreciated.
Aug 9, 2008 | 05:03 AM
Pro
Joined: Jun 2004
Posts: 543
Likes: 1
From: Detroit MI
Sep 6, 2008 | 10:28 PM
Instructor
Joined: Dec 2004
Posts: 186
Likes: 0
From: la ca
Did you ever figure out what it was? I am having the same issues with my car and thinking it's the clutch master cylinder. I am only experiencing this with 1st gear though. The grinding doesn't happen all the time.