Help, clutch problem - not typical
Thread Starter
Drifting
Joined: Jul 2001
Posts: 1,296
Likes: 0
From: Largo Florida
Help, clutch problem - not typical
This started to happen after the new engine and resurface of the non-stock single mass flywheel. When I press the clutch pedal all the way down I hear a scraping sound. This only occurs pressing the pedal down the last 20% or so of the entire pedal travel. It sounds like the throwout bearing is contacting something other than the pressure plate arms because you can hear the rotational scraping sound. Any ideas what that would be?
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
the clutch fork is rubbing the pressure plate.
This is what happens when one turns a flywheel - the spaces are so tight inside.
You have 2 choices, really... 1) get a new flywheel or 2) grind off a bit of the fork to make it fit.
This is what happens when one turns a flywheel - the spaces are so tight inside.
You have 2 choices, really... 1) get a new flywheel or 2) grind off a bit of the fork to make it fit.
Burning Brakes
Joined: Apr 2005
Posts: 1,109
Likes: 2
I had a similar problem and when I changed the clutch which by the way was needed, I found that the clutch fork was moving to the front, scraping the clutch.
The clutch fork is mounted directly into something that looks like a big screw with a ball in the end. This screw is secured at the back with another screw wich was broken in my car.
When the screw moved forward because of vibration it allowed the fork to make contact with the clutch pressure plate. This became more evident as time passed.
The problem is that you have to remove the transmission to see the problem.
The clutch fork is mounted directly into something that looks like a big screw with a ball in the end. This screw is secured at the back with another screw wich was broken in my car.
When the screw moved forward because of vibration it allowed the fork to make contact with the clutch pressure plate. This became more evident as time passed.
The problem is that you have to remove the transmission to see the problem.
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
I had that exact same problem and the problem was the roll pins on the PP where hittig the clutch fork. My problem turned out to be a defect in the PP and it was replaced free of cost. As far as I know Spec, Carolina clutch and the rest all use Valeo PP's, they just paint them differnt colors and put there stickers on them.
Last edited by FD2BLK; Jul 17, 2005 at 05:57 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Thread Starter
Drifting
Joined: Jul 2001
Posts: 1,296
Likes: 0
From: Largo Florida
Originally Posted by FD2BLK
I had that exact same problem and the problem was the roll pins on the PP where hittig the clutch fork. My problem turned out to be a defect in the PP and it was replaced free of cost. As far as I know Spec, Carolina clutch and the rest all use Valeo PP's, they just paint them differnt colors and put there stickers on them.
Also the machine shop ground the entire flywheel instead of just the removable friction surface so I will probably have to get an entire new setup.
I don't want to take it back to the shop the screwed it up because they will just do something else wrong. I will try to get some cash out of them though.
I virtually never take my car to a shop but with the wife complaining about me hogging up the garage if I did the engine, I did not have much choice. Of course here I am having to fix things the shop screwed up on.
