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Luni
05-23-2007, 07:01 PM
Im gonna be running an OEM clutch with a stiffer pressure plate. Seems like thats the way to go for a mild street setup.

I have a centerforce dual friction pressure plate on my stock clutch right now in the MR2. Theres a guy selling a spec stage3 plate that has 20k miles on it on the MR2 board for 50.

Is 20k miles on a HP pressure plate too many or will it still provide better pushing power than a stock plate?

Shadowlife25
05-23-2007, 07:21 PM
I've heard too many horror stories about Spec clutches to outweigh the ones that say they're happy with them, so dunno. Stock clutch+HP Plate should be a good setup. Was in rx-7. and I beat on that drivetrain :D

Sean
05-23-2007, 08:51 PM
Would I, no. Will it work great, yes.

Second Spec Clutch now, 50k + great miles out of Spec II.

My spec IV is starting its journey.

Luni
05-23-2007, 09:00 PM
In all the horror stories, the DISK fails, not the PP.

Im not objectively asking brand.

Im asking A) do you think the stage3 spec PP clamps harder than a centerforce dual friction PP, and
B) does a 20k PP still have good clamping properties.

celicaGT90_05
05-23-2007, 09:36 PM
usually you upgrade the clutch with the pressure plate. A flywheel wont give you the better overall grip, that would the the clutch disc, but it will however be a lot easier for the motor to turn so you'll get a bit of a power boost because upgraded flywheels are just weight reduced. If you want to upgrade to good grip, then you might want to consider ordering a stage 2 clutch. Just keep in mind all the flywheel is is a flat surface for the clutch to grip on, so a lighter one wont grab the clutch anymore than normal, and your pedals "grab point" may be moved out some if running an oem clutch, but not necessarily

VikingJZ
05-24-2007, 01:51 AM
What's the cost of a new PP?

Weigh the decision on both costs. The 20,000 miles also depends on how those miles were driven--hard, soft, highway, city, dirt/country.

celicaGT90_05
05-24-2007, 02:01 AM
The 20,000 miles also depends on how those miles were driven--hard, soft, highway, city, dirt/country.

All too true, I picked up a 10 pound flywheel for my truck for about $100 and it was used for race, but it was in good condition, saved me about $200. flywheels tend to last quite a while even if driven hard though

Luni
05-24-2007, 06:38 AM
I have a rare JUN ultra lightweight flywheel ready to go.

When I ordered Playfortodays clutch, I got him an OEM disk and a spec stage2 PP and it drives awesome. The PP I got him just wasnt used, it was brand new IIRC.

Hmm. Im torn.

So none of you guys would run a stage3 PP that had 20k miles on it? It HAS to provide better grip than stock. My Centerforce Dual Friction PP does for sure. Maybe I should just stay with it. It only has like 10k miles on it.

celicaGT90_05
05-24-2007, 06:44 AM
wait do you mean PP as in pressure plate? All a pressure plate does is pull the clutch disk off the flywheel... and no I wouldnt run a supposed race ready pressure plate with a stock clutch disk, if I wanted to upgrade I'd buy the disk and plate together

Luni
05-24-2007, 07:00 AM
Pressure plate doesnt only PULL the clutch off the flywheel, it PUSHES it against the flywheel.. The MAIN part of your clutch is your PP, the disk doesnt do near as much work as the PP does.

celicaGT90_05
05-24-2007, 07:06 AM
well true, but the main focus is the ability for the disk to grip the flywheel, you can try it but you might have issues with the mix matched parts. I dont have a whole lot of experience with upgraded pressure plates so I am not sure if you will get any quicker grip though

Luni
05-24-2007, 07:35 AM
No issues with a different PP in terms of fitment or engagement. Like I said, right now Im running stock disk with upgraded PP, its a Centerforce Dual Friction PP.

celicaGT90_05
05-24-2007, 07:37 AM
did it improve any over stock pp? If you think it would help then go for it, never hurts to try, just make sure none of the fingers are bent

celicaGT90_05
05-24-2007, 07:39 AM
well wait...some times it does hurt to try, but not if its been done before lol

Luni
05-24-2007, 07:49 AM
Yeah, Id say in mine and Plays case it holds and transitions better than stock PP for sure.

celicaGT90_05
05-24-2007, 07:51 AM
so its grabbin better with your centerforce PP?

MrWOT
05-24-2007, 05:44 PM
Unless you pop rivets or break off the diaphram teeth, it takes a LONG time to wear out a pp. Over 75k unless there are manufacturing defects or you beat the shit out of it.

T-spoon
05-24-2007, 05:55 PM
Unless you pop rivets or break off the diaphram teeth, it takes a LONG time to wear out a pp. Over 75k unless there are manufacturing defects or you beat the shit out of it.

Yeah, I reckon most PPs would long outlive their discs just so handy to do them at the same time.

Shadowlife25
05-24-2007, 06:12 PM
I ran the same PP in my rx-7 through 3 clutches. No problems with it and no loss of pressure or pedal feel when engaging. Hope this helps ya Luni.

Luni
05-25-2007, 01:43 AM
Thanks man, that does help.

Shadowlife25
05-25-2007, 08:10 AM
Mine was also a stage 3 PP. :)
Also, did you know that Exedy clutches are made by Daikin Clutches? OEM Baby!

alltracman78
05-26-2007, 02:30 AM
For mild setups stock disc and stronger PP is the way to go.
I've had [and seen] quite a few problems with aftermarket clutches. ALL centered around shitty discs. The PP are almost always fine.

You should be totally fine with the 20K PP. As stated they last for a LONG time. Just make sure the surface is smooth, flat and has no hot spots.
But what's wrong with your current PP? Why not use it?

And speaking of Exeddy, they are the ONLY aftermarket disc I havn't had problems with. All the others are rather flimsy in the center IMO.
I really wish I had stuck with my CM PP and Exeddy disc instead of wasting $500 on a Spec set and then dropping another $80 on a new OEM disc after 8k miles.

KoreanJoey
05-26-2007, 08:55 AM
Um... my centerforce dual friction is built on the Exedy plate...

celica9303
05-27-2007, 09:14 AM
why not get the cf DF cluctch disc to go with your PP? i love mine but again i have a non boosted 5sfe.