I talked to Jeremy at spec today and he asked for these Measurements;
Also He says their have only been 2 people with problems so far, also It seems to be LS2 related. I think the LSX block is derived from the LS2 so that might be why I have a problem???

Jeremy at spec was very helpfull! I will keep everyone posted on the out come of this!!!

Here is what I have for measurements;

Spec clutch from back of flywheel to fingers on clutch 3.450"
Old clutch same way 3.150"

Lower disk (flywheel side) 0.343"
Floater plate 0.315"
Upper disk (tranny side) 0.335"
Metal plate in diaphragm 0.277"

Also With every thing sitting together but not tightened down there is 0.080" gap between the flywheel and clutch diaphragm (seemed like there should be more gap?)

Also the Gm part#'s for the hydrolics I have are; ( I bought them through sdpc)
Master 1257077
Slave 15046288

 

The thing I don't get with the "LS2 only" claims is the flywheels are identical and AFAIK, the LS2 clutch is the same as the C5 Z06 clutch and will go in an LS1 car with no issues. Yet, the Spec is 1/4" taller. Makes no sense that it is "ls2 only".

Oh yeah- odd- my lower disk had more wear than my upper, yours is the opposite. Jeremy told me it is normal for the lower to have more wear. Strange. Also, I had .060 gap between the pressure plate and flywheel- so you are doing better than me lol. I think Jeremy said it was supposed to be .100, maybe more but I can't remember for sure.
Joe

 

Hey Joe, how many miles do you have on yours now and how is it acting?

 

I have about 1000-1500 or so. It is fine, but the pedal is back to being on-off all the way at the top and it chatters like a son of a bitch. Not even chatter like a little shake as it's engaging- chatter like "slip-bang bang-full grab" when trying to take off lol. Sucks to drive in traffic, but that's also a price I'm willing to pay to daily drive a 800whp car lol.

 

That is exactly how my clutch felt! I got a RMA today and sent it back! What clutch material are you running Joe? Apparantly you need to special order a clutch if you have a Ls2 or Lsx engine!!??

 

Joe, did yours always act that way? or did it become that way after a break in, also how did you break it in?

 

Well the Twin held strong Today and got me to a 12.5 on a non-prepared strip (1300' PA)

 

Ive put about 600 rwhp through mine so far and it is fine... real test will be this week. About 2x that...

 

Are you straping on a blower? Big Nos kit?? What are you doing that going to double your power?

I can't wait to get my car back up and running!!

 

its is my twin turbo car... Ive just barely hit boost while Im breaking in the motor at part throttle... this week its going on a dyno to tune WOT at full boost



yesterday I felt the clutch do as previously described in this thread... the actuation point moved from each time I used the pedal... moved low once and then back to the very top next time... weird lol

 

Also I bolted the clutch together and the fingers on the clutch are high on one side and low on the other? Aren't they all supposed to be the same hight?

 

Hmm, dowels now? When I asked them why there weren't any, I was told they aren't needed.. Strange. Also, can you possibly measure the depth of the "dish" and the thickness of the disks by any chance? I'm curious what the overall measurement differences are between yours and how they "fixed" mine.

As for the fingers being crooked as you tighten it down, that's not normal if it is fully tightened- but if it isn't tightened/torqued down fully all around, it will do that.
Joe

 

They cut 0.175" out of the flywheel, Both disks measure 0.345", the floater plate measures 0.315", And the total installed hight (back of flywheel to front of fingers is about 3.260"

I talked to Jeremy at Spec He says that until the clutch is installed and broken in the fingers might be un even. He says this is normal.

 

After my last install, my tailshaft on the trans is leaking and it is more noisy that it was before, any ideas?

 

I think mine had dowels. I'll find out as soon as I pull the transmission for the 3rd time. I'll measure all the disks too.

 

Mine came with dowels...



it held 1090rwhp so its good so far.

 

I got the Clutch back it today! I have about 20-30 miles on it and the clutch is Great! It was a day and night differance between the other clutch and this one! It has a great factory feel and I can slip it to get a great even take off from a stop!! So far I am very Happy with this clutch!!!!

http://lsx.streetfire.net/video/5597...d4017c68b5.htm
(I was playing with the Cut out, Thats why it gets load then quiet)


http://lsx.streetfire.net/video/8498...d401804a9e.htm
(Cut out is closed the whole time, Also only a 1/4 throtlle jab)



More videos to come!!

 

what disks are you using?

 

The first clutch was the organtic compound, this one is the carbon graphite compound. They upgraded materials in exchange for return shipping and aggravation!

I love the clutch!!! and the remote Bleeder I got from LPP Works like a dream!! Very awsome product!!

 

I am supposed to have the same carbon graphite, BUT my disks look alot different for some reason...