Mike Lindsey

We are a close to being able to share with you pictures and information regarding the new Push Type 951 clutch we had asked SPEC
to develop and produce earlier last year.

A few weeks ago it moved to the top of their engineering to-do list and the project shifted into high gear.

We were notified just this morning that the final component will be coming off the machines in the next day or two.

This unit eliminates the clutch fork and slave cylinder which are both problems as you are aware from either the failure or availability side.

Stay tuned for a very unique and needed item for the 951.

We will have kits available and in stock and the web site will have all the information to answer your questions in the coming days.

- LR

V2Rocket

AWESOME!!!
Been looking forward to this.

porscharu

Hmmmmm, interesting.

porscharu

Any chance of a non turbo or S2 push kit in the near future?

porscharu

Just an FYI they are now listed on their website. SPEC push clutch kits

951Dreams

I don't have a manual, automatic here. What's the difference in the Turbo clutch and the N/A clutch?

V2Rocket

951 clutch is 240mm diameter disc, NA is 225mm.
951 flywheel is very different design, 951 pressure plate is larger to accommodate the larger disc.
because the pressure plate is larger the 951 has 132 teeth on the ring gear vs 130 on the NA.
even the 951 bell housing is different to fit the 951 assembly.

951Dreams

I understand the need to have more power handling ability on a 951, cause boost, yo. But I do find it interesting Porsche found it cost effective to have two totally different setups. That's double the stuff to stock. Double the stuff to procure, and throughout an entire worldwide network, for a relatively low production car.

I'm guessing the turbo clutch is a much heavier clutch? (To work I mean) Maybe they figured the ladies would be put off by the extra work on a N/A? I wasn't Porsche shopping in the 80's, I was like 10, but I would have thought they could have just passed on the extra cost and no one would bat an eye.

"I was going to buy that brand new 944 for 23,000, but they want 23,300 for it, so no way"

Maybe I'm wrong, but I don't see most Porsche buyers really bucking too much, doubly so if you could sell the small increase by explaining you were getting a much better clutch.....

Course, would be total overkill on a N/A right. And Porsche did like to have the N/A, S, Turbo, and Turbo S. So maybe it broke the boredom of factory work to mix it up some.... LOL...

Ok, stream of consciousness post over. I was really wanting to see this new clutch, I was curious about how they did it, but for whatever reason the pics are not working on the LR site ATM.....

V2Rocket

951 clutch feels the same as a NA...the pedal and hydraulic parts are the same.
The spring on the pressure plate is probably stronger but the real upgrade is the increased clamping area from the larger disc - doesn't seem like much bit it's a lot more surface to grip.

951Dreams

Yeah, when you're talking something round, 15 mm is a lot more surface area.

But if everything else is the same, then I'm even more surprised on them having two different ones....

Oh, but wait! Yeah, backwards compatible with the 83-85.5.... And then all the extra cost of the new design could be passed onto the turbo buyers. Since they would already have to be procuring, stocking, and selling the clutches for all the previous N/A, I can see why they did it that way....

Little sleep, and being informed I was doing a brake job (for the GF's kid) just as it was time to take a nap, makes for slow thinking!!