slowpoke96z28

iTrader: (2)

What are you guys rigging up to get ACCURATE measurements to decide if your setup needs a shim or not. I am not very creative, but rather particular about accurate & repeatable measurements, so a 2x4 and the depth gauge from my dial calipers all one handed(or even clamped "as accurate as possible) won't satisfy me. Lets see what ingenuity has been bred by necessity. Pics are a plus...

hiltsy855

iTrader: (35)

Framing square & a digital caliper. The hard part is aligning the end of the caliper with the square....

stevieturbo

Buy the correct clutch, and you should never need a shim.

Midnight02

iTrader: (8)

Could you elaborate on that a little further?

stevieturbo

Well why do you think the clutch system would need a shim in the first place ?

If it was designed for the application in hand, then clearly it would not be needed. No OEM GM clutch needs a shim. And most qood quality aftermarket clutches do not need shims.

If the clutch was not intended for the application it is being used for and the stack/finger height is different, then yes you would perhaps need a shim

Solution, buy a clutch that is intended for the application

jmd

iTrader: (4)

Frankly, no he cannot.

hiltsy855

iTrader: (35)

The hard part would be to find this magic clutch manufacturer that says you'll never need to shim the slave.

stevieturbo

Not really that hard....I've had about 3 clutches in my car so far, none of them have needed a shim...as you would expect of course.

hiltsy855

iTrader: (35)

Thanks Stevie. What clutches have you used?

stevieturbo

Originally Textralia OZ700, then their triple disc ExoSkel which had issues with the drive plates after a couple of years.

I'm now using an ACT twin plate organic as I wanted a proper smooth engaging clutch as dont have any big intentions of huge launches any time soon.

been using it for almost 3 years now I think, and it's held well over it's claimed 8-900lbft rating when I've done standing 1km runs.

slowpoke96z28

iTrader: (2)

What car you run?

stevieturbo

Car is irrelevant as it's a conversion, but just a LS engine with a typical Camaro T56

Midnight02

iTrader: (8)

Thanks for the detail here and above -- I was curious as to which ones you have had good experience with and I'm motived to looking further into the ACT twin plate.

As Hiltsy noted above, the challenge is finding the clutches that were truly designed for our application. I understand how that would lead to a more predictable experience.

stevieturbo

For the money the ACT twin has been great really, and as good as the other two were, moving back to organic, the driving experience is just sooo much nicer.

If I do get to a drag strip again and it doesnt hold big launches, there are a couple of other clutches I could consider, RPS do a nice carbon multiplate that looks very good...of course it isnt cheap though.

I see over on the C5 forum Quartermaster have a new twin plate organic that looks very good too.

But then the likes of Monster, Mantic etc generally seem to get good reviews too.

slowpoke96z28

iTrader: (2)

I believe it does. 1.5 60' times in a 2,000 lb car is a whole lot different to a clutch than 1.5s in a 3,800 lb car, even with the same engine. Just my opinion though.

stevieturbo

Weight wasnt asked though. It was asked type of car in terms of clutch fitment where no shim is needed. Hence it is irrelevant as there is only one fitment for that model of car in terms of engine/box used.

Mine is around 3700lbs.

slowpoke96z28

iTrader: (2)

Well why the **** else would anyone care what car you have outside of its weight in this discussion mr smarty pants? Lol. Different car weights and the usage of those cars sometimes may dictate a clutch outside of this magic ACT clutch you mentioned. That's a given. So if a part does what you need it to for a reasonable price, why not adapt it to your application? Isn't that basically what you did by putting an LS engine and T56 in this vehicle of yours?

stevieturbo

No, I fitted the LS because it's a good engine, compact and easy to get 1000+ HP from it.

Hardly relevant to the clutch discussion where you can simply buy clutches that install correctly with a vast range of prices.

And I'd hardly say the ACT is magical, it's just a clutch, there is nothing special about it.

slowpoke96z28

iTrader: (2)

And that's why people like clutches like the RST/RXT. It's a good clutch, holds the torque to get a beast mode short time, and then your wife can drive it daily throughout the week. So now you understand why post #3 is practically irrelevant to this discussion.

stevieturbo

Its completely relevant.

Does the RST or RXT need a shim ? I think not.

As said, buy the correct clutch and there is no circumstances when a shim would be needed.