Lightweight clutch
TECH Apprentice
Joined: Jan 2006
Posts: 369
Likes: 0
From: Phoenix, AZ
so, lets say someone doesnt want to spend 2k+ on a clutch. whats the best option for something that will last but not be ridiculous for price?
Ive been looking at the spec stage 3 and 3+'s, i think with a lightweight flywheel its still going to shave 20lbs off the factory setup but come in under 1000$. my requirements are a little...different...than the full road race guys. my car is not a street car but i cant have an on-off switch for a clutch because it will destroy transmissions and rear ends when i clutch kick at 5000rpm and 90mph haha. clutch has to absorb some of that shock (hence why im looking at sprung disc's)
i have(had) an RPS on my last engine and LOVED IT. never had any issues.
Ive been looking at the spec stage 3 and 3+'s, i think with a lightweight flywheel its still going to shave 20lbs off the factory setup but come in under 1000$. my requirements are a little...different...than the full road race guys. my car is not a street car but i cant have an on-off switch for a clutch because it will destroy transmissions and rear ends when i clutch kick at 5000rpm and 90mph haha. clutch has to absorb some of that shock (hence why im looking at sprung disc's)
i have(had) an RPS on my last engine and LOVED IT. never had any issues.
Last edited by Kamin; May 11, 2007 at 11:58 AM.
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Busy morning and early afternoon so far.
Install the flywheel and torque to 107 lb/ft in a star pattern:
Clutch cover, flipped upside down:
Pressure plate added making sure everything is ultra clean:
Then the disk:
This is what a real clutch alignment tool looks like:
Alignment tool inserted. Disk lined up. Clutch cover tightened to 24 lb/ft with a dab or red locktite:
All done. The whole assembly with the flywheel and clutch is about 22 pounds:
After installing the clutch I double checked my setup height to make sure that the throw out bearing was in the proper position. Everything looked great. Transmission was attached to the engine and the engine is in the car. I will take more pics later.
Andrew
Install the flywheel and torque to 107 lb/ft in a star pattern:
Clutch cover, flipped upside down:
Pressure plate added making sure everything is ultra clean:
Then the disk:
This is what a real clutch alignment tool looks like:
Alignment tool inserted. Disk lined up. Clutch cover tightened to 24 lb/ft with a dab or red locktite:
All done. The whole assembly with the flywheel and clutch is about 22 pounds:
After installing the clutch I double checked my setup height to make sure that the throw out bearing was in the proper position. Everything looked great. Transmission was attached to the engine and the engine is in the car. I will take more pics later.
Andrew
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Today I bled the system. Couldn't be much easier. Connected a clear hose to the bleeder. Cracked the bleeder and let it drip into a container. Kept filing up the MC until there were no more bubble showing in the clear line. With the 5/8" MC I can press the pedal with my hand. Double checked for full release, all good.
Andrew
Andrew
Gotta admit, QM stuff is top of the line. I ran a 5.5" in my oval track car as well, using a 7.25" right now. They couldn't be any more simple to setup and bleed.
I spoke with someone at QM about a year ago, and they couldn't hook me up with an LS1 clutch setup. They thought they might have some parts, but they weren't in production, and couldn't find the flywheel. All they could remember was they put what I was looking for in a car that someone did for Goldberg. Eventually I gave up. The 8.5" you're showing is exactly what I was looking for.
I spoke with someone at QM about a year ago, and they couldn't hook me up with an LS1 clutch setup. They thought they might have some parts, but they weren't in production, and couldn't find the flywheel. All they could remember was they put what I was looking for in a car that someone did for Goldberg. Eventually I gave up. The 8.5" you're showing is exactly what I was looking for.
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
I think the setup for Goldberg was a 2 disk 8.5". These clutches are not for the faint hearted. If your even thinking about "streetability" than this is not a clutch for you. If you understand what this clutch is all about and how it works, then it would make a great setup in a track day or autocross car.
Andrew
Andrew
Originally Posted by ss1
Gotta admit, QM stuff is top of the line. I ran a 5.5" in my oval track car as well, using a 7.25" right now. They couldn't be any more simple to setup and bleed.
I spoke with someone at QM about a year ago, and they couldn't hook me up with an LS1 clutch setup. They thought they might have some parts, but they weren't in production, and couldn't find the flywheel. All they could remember was they put what I was looking for in a car that someone did for Goldberg. Eventually I gave up. The 8.5" you're showing is exactly what I was looking for.
I spoke with someone at QM about a year ago, and they couldn't hook me up with an LS1 clutch setup. They thought they might have some parts, but they weren't in production, and couldn't find the flywheel. All they could remember was they put what I was looking for in a car that someone did for Goldberg. Eventually I gave up. The 8.5" you're showing is exactly what I was looking for.
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Verdad Gallardo Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Originally Posted by FDLS1
Andrew, is the clutch that you are using completely streetable?
What do you consider streetable?
Anderw
Well, if using a KAZZ LSD with a diff that is pretty much solid mounted, poly suspension bushings, roll cage, and true dual 2.5in exhaust with straight thru mufflers is what you consider streetable then we are on the same page.
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Originally Posted by FDLS1
Well, if using a KAZZ LSD with a diff that is pretty much solid mounted, poly suspension bushings, roll cage, and true dual 2.5in exhaust with straight thru mufflers is what you consider streetable then we are on the same page.
It all comes down to how much maintenance you are willing to do. For me taking the trans out, inspecting the clutch, replacing the disk, etc...., is not a huge deal. For others its a major hassle that they do not want to bother with.
Is it streetable? In my opinion yes, but only as long as you do not expect a very long life from the clutch.
Andrew
Question...will that QM alignment tool above work with all LS1/T-56 clutches? From what I've found, the standard input shaft is 1-1/8", whereas that tool is 1-5/32"...I really like that tool though.
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
Originally Posted by MeentSS02
Question...will that QM alignment tool above work with all LS1/T-56 clutches? From what I've found, the standard input shaft is 1-1/8", whereas that tool is 1-5/32"...I really like that tool though.
Andrew
Teching In
Joined: Oct 2006
Posts: 26
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All done. The whole assembly with the flywheel and clutch is about 22 pounds:
After installing the clutch I double checked my setup height to make sure that the throw out bearing was in the proper position. Everything looked great. Transmission was attached to the engine and the engine is in the car. I will take more pics later.
Andrew
After installing the clutch I double checked my setup height to make sure that the throw out bearing was in the proper position. Everything looked great. Transmission was attached to the engine and the engine is in the car. I will take more pics later.
Andrew
Thread Starter
Joined: Mar 2003
Posts: 10,617
Likes: 1,883
From: Little Austin
The stock TOB cannot be used. Solution is pictured below. You can contact Quarter Master directly and get info on part numbers. Any of their dealers can take the order for you.
Andrew
