I was wondering if anyone who is using a dual friction center force clutch and used a centerforce throwout bearing, are they having any problems with the bearing , i have seemed to be having a squeeking noise while im cruising , as soon as you push the clutch in it goes away , Im planning on putting a gm bearing in I was just wondering if anyone else as had this problem

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Pino
91'Formula
LB9 305 TPI 5-speed
WS6 17" wheels
Eibach Pro-Kit Springs
Hotchkiss STB
SLP exhuast
SLP Cold Air Induction
CatCo Hi Flo Cats
http://www.oldsrocket.com\91bird
and the for ever returning CODE 32

 

SO that's what the noise is!! I have the same squeek but just lightly pressing on the clutch makes it go away. I figured that the clutch linkage needed lubrication. Do you really need a new bearing to fix the noise?

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1984 Z28
L69, CC Quadrajet
K&N Filter
3.73 Limited Slip
Centerforce DF Clutch
SLP 1 5/8 headers, high flow CAT, SS Exhaust
GM Motorsports Struts

 

well thats what im assuming it is , how long as your been doing it for ,, its exactly the same as yours , you just rest you foot on the clutch and it goes away . did you use the centerforce throwout bearing?

 

I'll get back to you , I have to check my receipts on the installation. It was over a year ago and the records are at home.

John

 

I also have this problem, and would like to know what the fix is.

 

Pino, it looks like I used a GM bearing. Did it come with the clutch or did you have to buy it separately? I don't see it on my parts list from the race shop where I go the clutch but I do see a bearing on my parts list from the install garage (~$40US). I'm gonna have the clutch linkage checked first before I do anything else.

John

 

Well i used the centerforce throwout bearing that i had to buy seperatly, and the sqweek is the bearing that the grease is running out or what have you ,, Im going to use a Gm one ,, its mostlikely the bearing there is no mechanical linkage to sqweek , seeing that it is a hydrolic system well ill be changing my bearing in a few weeks let you all know how it goes

[This message has been edited by Pino91Formula (edited June 12, 2001).]

 

Hi all with sqweeky throwout bearings ,, I was wondering how long it has been sqweeking with every one ,, mine just started about two weeks ago ,, and have you had any problems other than the sqweek being annoying. Just trying to figure out how quick i should do this.

 

BTT

 

Well this past saturday , I pulled my tranny out and replaced my throught out bearing , with A Gm one , so far so good nomore sqweek.

 

This isn't the first time I've seen a post on this subject. I also made the mistake of using the CF throwout. Mine comes apart on monday for replacement.

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1984 Z28 350
Never argue with an idiot, they'll just bring you down to their level and beat you with experience
My Web Page

 

Well I have some Bad news ,, well as you know i replaced my throught out bearing two weeks ago , and everything was fine , well the sqweek is back , so replacing the bearing didnt really do anything ,,the only thing i can think of is that maybe its the nature of the clutch , and that the sqweek comes from the counter wieghts on the preasure plate

 

Actually... the noise is the Throw out bearing Riding on the pressure plate... over time it develops a squeek because of the consteant friction causes a groove to develope and it starts to squeek. Easy fix is to add a return spring to the linkage so when the pedal is not pressed it returns to full rest... if that doesnt work then you need to re-adjust the clutch linkage so there is less pre-load on the throw out bearing. Doing this will also give you less throw however.... but will save your clutches life. (a throwout bearing that rides on a pressure plate is always putting pressure on the clutch, causeing it to be disengaged a little all the time. at high acceleration speeds this can cause slippage and overheating. bad news.)

 

well you cant adjusta hydrolic clutch system, so how would you go about this

 

the idea of the return spring is a good idea, a buddy of mine just dealt with this in his 88 formula. he did not use a spring ,however, the slack at the fork was the cause of the squeak. try something on the outside before openning it up again.

hope this helps
C

 

the slave cylinder (linkage for clutch fork) IS adjustable. It has to be. How do you re-adjust for thinner / thicker clutch disks? the linkage should have 2 screws like my 84 Z-28 or some way of shortening or lengthening the linkage. if all else fails, adjust the pedal. there should be a few pivot points to choose from on the pedal, right next to each other. If that fails, change the linkage starter point. the part the slave cylinder connects to the opposite side from the clutch fork can be re-adjusted on some cars. on mine i simply welded a new peice for it.

 

you cant adjust a hydrolic system , its self adjusting , just like your brakes

 

OF COURSE you can adjust a hydroulic system!!! LOL that defeats the purpose of my going to hydroulic throwout bearing if you couldnt! I needed more throw than my clutch fork could provide, it would bottom out on the bellhousing, so i went hydroulic, IT didnt give enough throw at first, so i adjusted the little screw on the master cylinder, problem solved!!!

 

why would you adjust the bleader on the master..

 

Trust me there is no adjustment on the hydraulic clutch linkage. At least not on my T56 setup. I'm pretty sure the T5's with hydraulic linkage are the same way.

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1991 Z28 - 350 TPI, T56, McLeod street clutch, LT4 pressure plate, Pro 5.0 shifter, ported plenum & runners, AFPR, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember

 

exactly , they are self adjusting

 

Who said anything about Stock transmissions? I never said anything about T5, T56, etc... they all use a slave cylinder as clutch linkage to apply pressure to the clutch fork. WITH MY SYSTEM I dont even HAVE a clutch fork. Its a Throw out bearing that BOLTS to one side of the trannsmission, and a braded steel line runs from it to the master cylinder to the pedal. there are no other moving parts except the throwout bearing pushes forward depending on where you have the master cylinder adjusted. Everyone here seems to be refering to the NON-ADJUSTABLE (self adjusting) linkage that comes stock with all manual tranny camaros. This is the not the same thing. you can push the pedal with a pinky it moves so easilly. We are obviouselly refering to 2 different things.

 

where can i et one of these, and for how much. im sick of my slave cylender going on me...

jon

 

BACK TO THE TOPIC:


my centerforce bearning makes the same fu(king annoying noise and i am sick of it!!!!!!!!!!!!

 

i believe what you have is called a concentric slave cylinder

 

http://www.geocities.com/MotorCity/G...031/clutch.txt

I submitted this Tech Article a while back but it has not been added to this site yet. However, I have it on my homepage.

 

I got rid of the sqeek by replacing the slave cyclinder, It it actually a metal case with a real bleader vavle tranny shifts alot smoother and takes off super smooth now

 

Hi guys, I've got some info that everyone won't like to hear.

I helped develop the first dualfriction clutch about 10-12yrs ago. My corvette was part of the R&D for Mike Hayes who owns Centerforce. The pressure plates when revved put an enormous amount of force on the throwout bearing that they just don't last long.I was side stepping the clutch sometimes a 8000rpm and at that force, we were pulling them out every other race.

Conclusion- The clutch assembly holds great but it takes its toll on the bearing.

To add a sidenote: We were not using an over the counter pressure plate. Then one he built for me was a customized Saches plate that produced a hell of alot more holding power than the over the counter units. When I revved that thing with the throwout bearing ingaged(clutch depressed) the pedal wanted to come back at me and take my head off. It made for alot of sore leg days, Not to mention what it would do to 40lb flywheels.

 

hey guys i put a stock clutch in mine from pepboys i think it was a hayes and it does the same exact thing, i got rid of it for a while by putting grease on the fork where the salvecylender rod ball goes it but now its back, i plan on dripping some superglue in the little spot the slaverod goes into on the fork and letting it dry then puttin it back together, cause its like the tiniest little amount of movement u need to stop it. so i woulkd say do this or replace the plasitc cup on the slave cylinder and u should be good