Clutch conversion question, Pull clutch conversion Options

[DeeEmm]

Yeah it's hard to find definitive info online with all of the AI slop about.

My pressure plate is 3032.055.099 / TYP GMFZ 225 which I'm pretty sure is the higher pressure version.

The pivot arrived yesterday, in the worlds largest box - Yes, that pivot was the only thing in the box. Absolute madness.

(IMG:http://www.914world.com/bbs2/uploads_offsite/vdubber.com-28216-1782799668.1.jpg)

It appears to be case hardened but is a minute M8 thread. Absolutely tiny. No wonder they pull out / snap.

(IMG:http://www.914world.com/bbs2/uploads_offsite/vdubber.com-28216-1782799669.2.jpg)

Next step is to get the box here. Will definitely need to figure something out to reinforce the pivot mounting as I cannot see it lasting

[ClayPerrine]

Ok. I realize I have been gone for a while. Life and a new job have gotten in the way.


When using a 70-71 911 gerarbox, you can use the side shifter parts and flip the diff to put it in a 914.

HOWEVER, you MUST use a 70-71 911 pressure plate and throwout bearing. The throwout bearing is unique to that setup, and there is no substitute for it.

The pressure plate is physically the same as a 72 and later pressure plate, but the clamping force on the 72 and later pressure plate is much higher. If you use one on a 70-71 911 transmission, you WILL pull the ball stud out of the inside of the bell housing. Even with the 70-71 pressure plate, the factory had to re-enforce the bolt hole with a top had shaped steel insert in the case for the ball stud to screw into. That fixed it for the lighter pressure plate. But it will pull out if you use a 72 and later pressure plate.

Then you get to take the ride of shame, (IMG:style_emoticons/default/Trailer.jpg) and you get to tear down the transmission and replace the case with the hole ripped in the inside of the bell housing. Plus the clutch disk that is now saturated in gear oil.

This is a good setup. It will work with everything up to a 3.2 Motronic motor using factory parts. And the pressure plate clamping force is a non issue with how light our cars are. But you have to be careful to get the right parts. And that damned throwout bearing is really expensive these days.

This was all documented in UPFIXIN DER PORSCHE. I don't remember which issue. And I ran it in a 914-6 conversion with a 2.4 MFI motor for years with no issues. If you search on here, there is probably pictures of it in my car.

Hope that helps!

[stownsen914]

My pivot bolt didn't pull out. It did snap though. Not at the threads though. At the narrow part where the two conical spacer-like things meet <shrug>

Machined 914 trans case with the insert, 915 aluminum sport clutch.

[stownsen914]

Dup post