clutch issues
Thread Starter
Instructor
Joined: Aug 2015
Posts: 137
Likes: 12
clutch issues
ive been fighting a clutch issue thats about to drive me crazy. Up until about 4 months ago id always shifted the vette around 5800 and never really had an issue. i installed a Fast92 intake and got retuned. Now im shifting at 6800. I get locked out of shifts all the time. i recently put an adjustable master on it and that never helped. the slave is about a year old. i changed it out when i replaced the clutch with a Centerforce dual friction. What is weird though is that when its colder out the clutch enagagement is all the way to the floor but as the engine warms up the clutch engagement moves further off the floor where i want it. also when its cold out i can barely get it into gear. the clutch doesnt disengage all the way. Ive bled the heck out of it. prob went through 6-8 big bottles of brake fluid here lately. ive tried dot3 and dot4. last night i used a mighty vac kit to try bleeding it that way. nothing helps. whats really strange though is as it heats up it starts to work correctly. any suggestions??
Intermediate
Joined: Dec 2015
Posts: 41
Likes: 0
From: Cleveland Ohio
You say you put an adjustable master cylinder on it and it didn't help, but did you actually try adjusting the master to deliver more fluid? I had a similar problem of getting locked out of shifts at high RPMs and adjusting my Tick master cylinder pedal to be a little bit more off the floor fixed the issue. One test you can try is to stop on a flat surface, leave the car in first gear with the clutch pedal on the floor, and slowly give the car gas raising RPMs all the way up until redline. If the car moves at all, your master cylinder needs adjustment.
Burning Brakes
Joined: Jul 2013
Posts: 1,008
Likes: 57
From: Kensington MD
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Thread Starter
Instructor
Joined: Aug 2015
Posts: 137
Likes: 12
this time i just tried bleeding the system with it hot and the clutch working ok. with fresh cool fluid i just about lost all my clutch. as the fluid started getting hot the pedal started to come back. makes no sense at all.