What clutch do you big power guys run?
 

I realize this isn't technically a Greddy question, but I figure this is the best source since there aren't too many people making big power on the 1.6.

Anyway, what clutch do ya'll use to hold up in the 250hp range on the 1.6? I am working on a t3 based setup and my goal is 250. I want an ACT. Does the heavy duty hold up (rated 200 TQ) or is the extreme the way to go. Thanks for the help.

ACT XT. I'm pretty sure I reached the limits of the HD at 180rwtq.


btw, next time post in General Miata.

My ACT XT should be here by the weekend. I'll let you guys know in a few hundred miles. :D

btw, this was my decision making thread from a few days ago.
https://www.miataturbo.net/forums/showthread.php?t=9020

I might get a greddy blow off valve, so it's cool. It's a greddy question. Just kidding. I just thought this would be a better place since it's 1.6 specific and there isnt much 1.6 love out there. It can be moved or whatever if need be.

Sounds like the XT is a winner. That's what I figured, but we put HD's in everything at work. Those are all 1.8's and I was afraid that the smaller 1.6 might run out of grip on me. Thanks for the input.

The 1.8 HD has been used to hold up just fine in the 300 rwhp range.

So far, I'm pleased with mine, and hopefully will be giving it every last bit of my turbo shortly (around 275 hp).

I was considering this option as well, but I dont feel like buying a new, heavier, flywheel, so the extreme is a winner.

Do you guys run the street disk or the performance street disk with the extreme pressure plate.

I have a Spec Stg 3 awaiting install. Same clutch the 300+whp SM-T cars use and they handle the power.

I got a stock 1.8 wheel for next to nothing and had it lightened.

I think I wrote this same thing yesterday: wouldn't you have a slightly heavier rotating mass that will absolutely not slip and transfer power, or a slightly lighter rotating mass that may rev faster, but potentially loose bite and slip?

http://gallery.wewt.net/albums/03mia...3231.sized.jpg

good for more than my tranny is.. ;)

the 1.6 XT is rated for 277, the 1.8HD is 233...
my XT has been great, at an estimated 220-230whp. street disc.

xt00, 7# flywheel. it's heavy, but you get used to it.

I just bought ACT 6puck sprung disk with ACT HD pressure plate, should be good for 300ft/lb

rusman i just got that installed on my car about a week ago.. BOY do i love it. But its like learning how to drive stick all over again hahaha. No more taking off easy or feathering. Gotta find the sweet spot, rev it and nearly drop the clutch.

I see you and raise you.

http://gallery.y8s.com/d/840-2/Dscn1597.jpg

Thanks again everyone. I'm just going to go with the 1.6 ACT XT with the street disk. It will take a little getting used to, but I like a stronger pedal pressure anyway. My wife doesnt drive the car too often, so it shouldnt be a big deal to have a manly pressure plate in the car.


Alright, do you guys run the regular street disk or the performance organic street disk with the XT PP? Gracias

Actually I think you meant to say "I'm all in" :bigtu:




And its an either or situation, you can see/call or raise but not both...

i just hope my dual friction is acutally an improvement over the HD....:x:

From the way a pressure plate works, it seems those centrifugal weights should improve the clamping force as the rpms rise, by forcing the weights to the outer edges this causes the PP to acutally clamp harder down.

My ACT HD was rated at 200tq, which is like a 33% increase ( i guesstimate the oem clutch can hold 150), new one is rated at 90% increase, so should hold closer to 280tq....but we'll see how effective this this is.

one thing i wish was available, the clamping forces of all pressure plates. OEM, ACT, Centerforce, Clutchnet, Competition, SPEC, etc. Then one could just choose a damn disc he's happy with and call it a day.

bye bye trannies:sadwavey:

Alrighty then. I get everything ordered. ACT REALLY needs to update their website. Some of their part numbers have changed and they no longer make some of the stuff they used to. Makes things mighty confusing when you try to order from somewhere with old part numbers off the ACT website. I ended up going with the 1.6 extreme PP with the modified organic street disk. Aparently the only option of organic disk now from ACT without upgrading to 1.8 stuff. Thanks for the help. Now, I just have to get that bad boy in and broken in and then it's turbo time. It will be nice working on my car for a change.

Why not upgrade to 1.8? I have a 1.8l flywheel for sale if you want.

You are running the Centerforce unit? I heard the weights have been known to come off the PP.

Hopfully it works out for you. Did you replace the ACT because it was slipping? Or you are expecting it to slip?

i had a cfdf on my fwd eclipse, loved it, but i never planned for big power in that car. I don't see any reason not to go with the act xtreme, they had a great rep in the dsm community and i haven't heard of a miata burning one up. for me taking the trans off again is too much of a pita to cheap out on a clutch

Yeah, CF Dual Friction.

My ACT HD could slip if i dumped it really hard in gear, tried once or twice....and it slipped once at 12psi with a passenger. Since i hated the ligthweight flywheel I decided to upgrade in antipation of more power. while i swapped the JUN with an OEM.

I have a Centerforce I on my altima for over 3 years and I've have no problems, other than a failed TOB, but that was a nissan part, no problems with the weights.

I was trying to find a cheap ACT XT, but this local deal came my way, barely used going to be a built spec miata, so i jumped on it.

I heard good things from them, so time will only tell, i'm just iffy on the kevlar thing.

HAHA, this was with my fat ass in the car. I make his car weight as much a a crown victoria :P

it doesn't help that my subway eating ass is in it as well. :gay:

act xtreme ftw