So I went to the track on Friday and with my new mods and my stock clutch, it won't hold launching with my drag radials anymore. I picked up a GMPP clutch from a member on here a couple weeks back. I'm a small engine mechanic and just slowly starting to get into car stuff. Mainly on my Cobalt. Is there any suggestions or tricks anyone has who's done their own clutch before? And I tried to find flywheel machining specs for how much I can take off but can't seem to find it anywhere. Anyone know the specs? I am probably going to pick up a service manual just to make things go as smooth as possible.

Thanks!

 

Sub'd for results bahahahahah.

 

Bump

 

i gotta change my clutch too. mines an LNF tho, hopefully its similar. too much torkz

 

Meh just buy a new flywheel. Theyre not all that expensive.

 

http://www.gmperformancedivision.com...SJ_Chap5&6.pdf

 

I'd also replace rear main seal, slave cylinder, clutch pipe, throwout bearing, etc. Basically everything you can that requires you to remove the trans to replace, if you can afford to spend some extra money.

 

I'm in the process of doing my own.
I ordered the GM11-HDSS kit from ACT. Got the LNF throwout/clutch release bearing from my dealership. It's designed better than the LSJ's original.
Just in case you didn't know, we have a throwout/slave cylinder hybrid, and GM calls it the Cylinder Clutch Actuator.
I'm replacing that, clutch pipe, flywheel, disc, pressure plate.
I'm following the directions from the manual that somebody else posted above.

First and last time I'm going to do this. My clutch wears out again, and I'm having somebody else do it.. It's seriously a PITA.

 

It's not that bad IMO, ZZP can have it done in 5 hours or less.

 

That's perfect! Thanks!

 

u need a special socket to get the pressure plate off.. i tried to use a socket and stripped one or two "/

 

I just did one on my 2.4 in like May or June. It's not too bad; I was able to do it at my work on my day off, so I was able to use air tools and a rack. It took me and my coworker about 3.5-4 hours, which I didn't think was too bad considering it was my first time doing a clutch in a fwd.

If you have the cash, pick up a new flywheel; Machining the old one would be about 50$ or so. If your hardcore like me, just put it on a brake lathe and hit it with some 40 grit...


pop the balljoints from the knuckles, pull the CVs, unbolt rack, and yank the subframe out.

 

Break it in for about 500 miles. Shift at or over 3000 rpm and take it out on the highway for 2 or 3 25 mile cruises

 

I know i'm gonna do some swearing but I just can't swallow paying someone $80-$100 an hour for something I know I can do if I take my time.

Special socket?

Now that gives me some positive hope! Haha. Ya i'm just gonna but a new flywheel for what it's worth.

That was my next question haha

 

you need an inverted star bit socket or a inverted torx bit socket I forget

 

Thank you sir

 

the trick is getting a clutch bearing thats good from the start. i have had to order 3 so far

 

Well the GMPP clutch comes with a new TOB but whats been wrong with yours?

 

leaking when i pump the pedal. i have ordered 2 of the upgraded tob's from CED and i just ordered 1 more upgraded tob and a lsj tob incase that one fails as well.

 

Ouch that sucks. Perhaps you are maybe overlooking something?

 

it is pretty straight forward so I dont think thats the case. the last tobs i have ordered i got from my local dealership so I am hoping that does the trick. there has been a few people have issues with the tob

 

honestly is it a job that can be done in a garage? never ever did a clutch. all i know is they cost 600-1k to get put in

 

My tuner has had his transmission out countless times on jackstands. And he's crazy fast at it lol. Unfortunately he's too busy to help me. I'm sure a hoist makes things a lot easier but what do ya do. Flywheel bolts, it says replace if needed. Should they be replaced regardless?

 

I did my own in the shittiest crammed cold garage on jackstands. Piece of cake. I don't even recall any "special socket" so it cannot be that unusual. The shittiest job is bleeding the system after. Just follow the instructions and you shouldn't have any hassle.

The flywheel bolt are torque to yield so replace them.

 

A few friends and myself have been doing it on jack stands in the driveway