Clutch types for subaru's
 

Could someone fully enlighten me on the advantages to pull/push type clutch systems, and the general reason why all subaru turbo transmissions come with push and NA's come with pull?
Thanks
phil

You got that backwards, The Turbos came with pull types and all the others came with push types. I don't really know why one is better than the other, I'v never seen a pull type clutch on any other kind of vehicle. All I can figure is that it must have something to do with the leverag that the pull type pressure plate has on the clutch that makes it clamp tighter.

The cable types are the pull type....cables don't push very well.....

I think the reason for the turbos haveing the push type is because it was Subaru's first hydralic clutch system, and it's easier to make a hydralic cylinder push, may have been the that style fit in under the intercooler better also....Just some of the reasons that came to my mind:rolleyes:

I'm gona have to dissagree on that with you Huck. The tubo ones are called the pull type because of the way they pull on the pressure plate. The throwout bearing snaps into a ring on the pressure plate and acctually pulls the fingers out. The cable operated push type just push the bearing against the pressure plate to disingage it.

Maybe...But I know that the cable "Pulls" the clutch fork to dissengage the clutch, as that is what I'm using on my SVX.
I haven't seen the hydralic type clutch on a Subaru, but on every other vehicle with a hydralic clutch I've owned (several) they ALL push on the pressure plate fingers to release the clutch,same for all the cable clutch cars, and the mechanically activated cars that I have owned......
I've never seen a set up that Pulled on the fingers, but have seen some that "Pull" on the fork, and some that "Push" on the fork, but they all pushed on the fingers to release the clutch.

But as I stated earlier, I haven't accually seen the Subaru Hydralic set-up....so maybe it does what you say:confused:

I'd like to see one to get a better understanding of how it would "Pull" the fingers, as I can't figure out an easy way to accomplish that:confused:

Ah yes, if you've never seen one than it does sound wierd. The first time I took in apart in my Legacy I was ready to kill the thing, I couldn't figure out why it felt like the bearing was stuck on the shaft. I ended up unbolting the pressure plate from the flywheel with a ratcheting wrench and later found out that yuo have to pull a plug in the side of the bell housing to slide out the shaft that the clutch fork rides on so you can pull the clutch fork up and allow the bearing to slide out. So yeah, it's a screwed up setup.

i found a good picture of inside the bell housing of my tranny.

http://www.subaru-svx.net/photos/fil...t_SVX/6175.jpg
Ok so, is there a performance gain from a pull type? Just quicker release?
phil

Like I said, I think it might have something to do with the leaverage of the pressure plate on the clutch. Like that buy pulling it puts more pressure with less effort on the clutch. I have no proof of this but give me time.

well...
 

In your theory, you mean pedel pressure or clamping pressure?
phil

I mean that it puts more pressure on the clutch with less pressure on the pedal. There for you can make a pull type clutch stronger than a push type and still have a workable pedal.