clutchmasters fx850. which discs do i have??

[bigern45]

so.. the good ole RS4 pp only stood up to 15k stage 3 miles and 100+ passes and launches at the drag strip. so i am in dire need of 2 things. a new, stronger, better clutch setup for 1. and 2, the money to purchase a new, stronger, better clutch setup. so.. very related, these things are. and.. as lucky of a guy as i am, i have an amazing woman as a wife. she loves my car and me modding it which is super cool. and her dad just happens to be a representative of a number of parts manufacturers. (not why i married her you assholes )

any how, he was able to hook me up with a new clutch setup. i asked him for the most aggressive setup, a double ceramic. but.. beggers cant be choosers, so id be happy with what he can get me. so here are some pics, and i cant find any other pics. can anyone tell me if this is organic/organic, organic/ceramic, or ceramic/ceramic. mind you, im only putting about 475wtq and 475whp on race gas to the ground. so i think either way, this clutch will do the job and more. and then if/when i go big turbo, i can always change out the discs for a more aggressive setup.

here are the pics. thanks in advance dudes!!

[Dr. Jekyll]

Hard to tell from the pics but it looks like ceramic/iron to me.... which is pretty damn aggressive :-)

[Jason@Addict]

The CM's come as follows from MOST aggressive to LEAST aggressive:

Dual Cerametallic w/ no sprung hub
Dual Cerametallic w/ single sprung hub
Half Cerametallic, Half Kevlar w/ no sprung hub
Half Cerametallic, Half Kevlar w/ single sprung hub
Dual Kevlar w/ no sprung hub
Dual Kevlar w/ single sprung hub

There are no variations in clamp rate. The Kevlars will slip better for daily driving, but won't last as long when beat on. ANY combination will hold the power. The metallics take longer to wear in, but when they do offer surprisingly good feel. I have sold and used every combination and really don't have any complaints about any of them. You obviously have the half and half with a sprung hub which is nice set-up! Score from the Dad-in law!

Make sure you check the bolt length as they normally need to be shaved down slightly.

[bigern45]

The CM's come as follows from MOST aggressive to LEAST aggressive:

Dual Cerametallic w/ no sprung hub
Dual Cerametallic w/ single sprung hub
Half Cerametallic, Half Kevlar w/ no sprung hub
Half Cerametallic, Half Kevlar w/ single sprung hub
Dual Kevlar w/ no sprung hub
Dual Kevlar w/ single sprung hub

There are no variations in clamp rate. The Kevlars will slip better for daily driving, but won't last as long when beat on. ANY combination will hold the power. The metallics take longer to wear in, but when they do offer surprisingly good feel. I have sold and used every combination and really don't have any complaints about any of them. You obviously have the half and half with a sprung hub which is nice set-up! Score from the Dad-in law!

Make sure you check the bolt length as they normally need to be shaved down slightly.

awesome!! so ill be happy with this as a daily driver AND the drag strip 4 times a year?? and you mean pp to flywheel bolts or flywheel to crankshaft bolts??

thanks jason!

[Jason@Addict]

awesome!! so ill be happy with this as a daily driver AND the drag strip 4 times a year?? and you mean pp to flywheel bolts or flywheel to crankshaft bolts??

thanks jason!

Yeah I think you'll love it though you have now moved the failure point to the axles and mounts. The crankshaft bolts will likely need to be shortened very slightly - no threads cut generally just the tapered portion at the very end of the bolt.

[NogaroWonda00]

rich-

who would have ever guessed we'd always seem to be in the same boat with our cars! I also just got an fx850 from jason lol, I think you will be happy with it ;)

[bigern45]

what discs did you go with chris? im thinking with my power levels, as long as i break this thing in properly, it should hook like all get out. then i can really put those BF goodrich radials to use!!

[davenew]

Yeah I think you'll love it though you have now moved the failure point to the axles and mounts. The crankshaft bolts will likely need to be shortened very slightly - no threads cut generally just the tapered portion at the very end of the bolt.

That's what I had to do. It would be bad if they were too long.. because the bolts would torque and you would think they're good.. but they're really bottomed out in the hole.

[GURUMAN]

That's what I had to do. It would be bad if they were too long.. because the bolts would torque and you would think they're good.. but they're really bottomed out in the hole.

I did damage one of my crank because of the too long bolts !

[gearhead1186]

I also just got an fx850 from jason

Ordered mine from him as well. Should be at my door on Tuesday! Lookin good rich.

[bigern45]

yeah mike, im pumped.. should have my metal slave from USP shortly, cant wait to tear it apart!!!

and thanks to everyone about the too long bolts. i woulda probably found out the hard way..

[bigern45]

so what is the measurement to look at for the bolts?? just take a few mm off the end of the bolt? or do i need to look at the old ones?? can i just install washers on the clutchside, or will that interfere with the clutch??

[gearhead1186]

so what is the measurement to look at for the bolts?? just take a few mm off the end of the bolt? or do i need to look at the old ones?? can i just install washers on the clutchside, or will that interfere with the clutch??

dial calipers. measure the bolt holes in the crank and add that to the thickness of the flywheel. that should be greater than the length of the bolts to assure you dont bottom them out.

[NogaroWonda00]

Rich I got the Kevlar one, it really is odd how streetable it is, and you may now realize that you may have had that rs4 slipping. At least that's what I thought after the first launch with it lol...

[Evilevo]

Jason, which would you recommend for a car that is daily driven? Will a cerametallic last longer than the kevlar one?

[Jason@Addict]

Jason, which would you recommend for a car that is daily driven? Will a cerametallic last longer than the kevlar one?

The metallics will last longer, but the kevlars will engage far easier for a DD application. I actually prefer the feel of the metallics once they break-in, but I also drive twins often.

[bigern45]

van halen baby.. best of both worlds!! lol.. when i go super nasty with this project car, ill go stupid nasty clutch, i think my setup once broken in properly will suffice.. i think my power level (470whp) wont even make my setup sweat.. i hope itll last longer than 15000 miles..

[bigern45]

got the slave today, looks great USP!! thanks!! ill try to post some picks up later of the slave, and im getting into the teardown tonight, hopefully ill have some pics of my SB and RS4 pp...

[bigern45]

so, got the transmission out tonight, and this is what i found..



no broken fingers like i expected, although the SAC is adjusted to all the way worn. perhaps i was too violent?? and it just fell out of adjustment that way?? and so it caused my clutch to behave oddly?? you can see how the springs are completely unloaded..



and here was the clutch side of the pp, again, no major heat cracks, but there is a lot of ridges and streaks!!! when i was taking this thing off, tons, and i mean TONS!! of metal and clutch shavings fell on me. i expected some dust, but not this....





and then the flywheel, which looks similar to the pp..



so, i guess it was a combination of the pp not clamping hard enough, or the SAC coming all the way unajdusted somehow, that caused the clutch to overheat, as you can see where the pucks where binded to the sprung disc. you can tell the SB stage 4 is no lightweight, but i guess the heat and inability to perform on the part of the pressure plate caused chunks of it to just disintegrate, that was well as the flywheel. the clutch wore out this bad?? and i never smelled it at all, except on passes where i seemed to hook great and the clutch not slip.. or maybe just the everyday driving of the car and then all of a sudden the drag strip, two complete differences as far as changes of pace occured, and it was just too much for it.. oh well, ill get some more pics of the install and such with the flywheel and clutch/usp slave cylinder tomorrow..