Watercooled VW / Audi motor swaps?, it IS a VW afterall, right?.... Options

[2mAn]

My searching hasnt gotten me very far. Im sure most of you hate the idea, and thats fine. I am in the research phase and havent done anything yet, but I am close to purchasing the 914 and want to have a solid gameplan prior to purchasing the vehicle.

SO whos done it, I know of a 20v turbo here on the board, but havent seen any others.

Thanks
-Simon

[2mAn]

bumping this back up since it looks like the Rabbit will finally be sold and the garage spot will be open for my project...

[2mAn]

BUMP

Im with you on the bellhousing side, just curious what flywheel/clutch/PP setup Id have to use. Im assuming it depends on the transmission I use, yes?

You lost me on the flanges, I know you are referring to the size that attaches to the CVs, but what size flange do the 914s have? 108mm? or 90mm?? something else??

[Mike Bellis]

BUMP

Im with you on the bellhousing side, just curious what flywheel/clutch/PP setup Id have to use. Im assuming it depends on the transmission I use, yes?

You lost me on the flanges, I know you are referring to the size that attaches to the CVs, but what size flange do the 914s have? 108mm? or 90mm?? something else??

I believe the stock size is 94mm. Early 911 outer stub flanges will fit in either a 100mm or 108mm flange size. it's a bolt on swap if you get the right ones. if you get the wrong ones, you need a 5mm spacer ring.

I just made some 108mm flanges for my Boxster/Passat 5 speed tranny. I chocked up the flanges in my lathe, machined off the 100mm bolt pattern and carefully welded a 108mm adapter onto the flange. I then spun it in the lathe again to check it for true. I welded it like a structural double pass weld. Good heat. Good penetration. Came out pretty god and better than expected. picture will show up in my build thread soon.

BTW, I have a set of 100mm outer flanges for sale if anyone needs them.