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Old 03-27-2020, 07:52 PM   #26
spoolinsti05
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Member#: 108051
Join Date: Feb 2006
Chapter/Region: AKIC
Location: Oneonta, NY
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2005 WRX STi
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The only credit I'll give a mpc is it's ability to disapate heat. But stick with a pull style .

Reason I say this is push on a bearing that is spinning with a shaft on the other end and you'll get an in-balance. But pull on it and the shaft that is harnessed into place (main bearings) and it'll play a lot nicer. Subaru didn't put a pull style clutch on the car for ****s and giggles.
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Old 03-27-2020, 07:58 PM   #27
Waddlz
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Member#: 395275
Join Date: Jul 2014
Chapter/Region: RMIC
Location: Fort Lupton, CO
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2012 STi
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Originally Posted by spoolinsti05 View Post
The only credit I'll give a mpc is it's ability to disapate heat. But stick with a pull style .

Reason I say this is push on a bearing that is spinning with a shaft on the other end and you'll get an in-balance. But pull on it and the shaft that is harnessed into place (main bearings) and it'll play a lot nicer. Subaru didn't put a pull style clutch on the car for ****s and giggles.
Comp has two MPCs

The old one, which is the Push type conversion.

the new one, which is the one I got, has no conversion.
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Old 03-27-2020, 08:04 PM   #28
spoolinsti05
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Join Date: Feb 2006
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2005 WRX STi
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Originally Posted by Waddlz View Post
Comp has two MPCs

The old one, which is the Push type conversion.

the new one, which is the one I got, has no conversion.
Well then they may have smartened up. But I still don't like the smaller diameter disc. It's to on off because of the pressure distribution across that tiny pressure plate. And the heat distribution is less ideal then a full size disc like an exedy. Exedy has been in the game a long time.. supplier for wrc cars and jgtc.

Comp mpc makes there own billet cnc stuff. So they don't source plates from exedy. But the single disc is for sure sourced from deka. Comp just uses there own disc and clutch fingers on the deka plate template. Just like act cm and all the other brands out.

What I'd do is measure the depth of the throw out bearing from the crank to the fork contact points and compare them to an oem unit. They need to be the same. If not you'll have some issues.
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Old 07-10-2020, 11:17 AM   #29
frugalrhombus
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Originally Posted by subaru_gc8 View Post
your cluitch isnt going to hold that power... I dont think a black will get you up to the 600+hp level either
So I sort of forgot I made this post, but I ended up finishing the build last month. I kept the clutch I had and it is struggling lmao. I looked it up and it said it was rated for 515 torque so I thought we were going to be fine but it ended up making a lot more power than I expected.

Apparently (according to my tuner at least) there is an issue on the 2019s where their speed sensor cuts out while on dynos and makes the diffs start acting up so we didn't get the full tune done on the dyno and had to finish it on the street. It made 470 on just waste gate and got up to 560 on only 26 psi before we had to get it off the dyno and finish it on the street. Street tune got it up to 33 psi so it should be well into the 600s.
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