5 speed swap. 914 tranny

[yetibone]

The 914 CV flanges are the same size as a Beetle's, except the 914 flanges had 4 bolt holes, and two dowel holes. On my car I used the 914 flanges with the dowel holes drilled through, and threaded inserts screwed into the holes.

The power necessary to trash a 930 CV joint would certainly break the 914/901's intermediate plate instantly, so those CVs' aren't really needed.

If you use stock IRS Beetle trailing arms, with the stock stub-axles, then you should use the stock IRS Beetle axles, and their CVs'.

If you use Porsche stub axles in the Beetle, or early 944 steel trailing arms, you should use the stock Beetle CVs' on the inside, and early 944 CVs' on the outside of stock IRS Beetle axles.

If you use Porsche alloy trailing arms (wide or narrow), use the late 944S (after '86) *NON TURBO* axles with Beetle CVs' on the inside, and non-turbo 944 CVs' on the outside.


*944 Turbo axles had a coarser axle spline pattern than the non-turbo axles. The non-turbo axles have the same spline pattern as an IRS Beetle.

[gimmesomeshelte]

Originally Posted by yetibone

The 914 CV flanges are the same size as a Beetle's, except the 914 flanges had 4 bolt holes, and two dowel holes. On my car I used the 914 flanges with the dowel holes drilled through, and threaded inserts screwed into the holes..

I'll drill them out and thread them too.

Originally Posted by yetibone

The power necessary to trash a 930 CV joint would certainly break the 914/901's intermediate plate instantly, so those CVs' aren't really needed..

Can the intermediate plate be upgraded? Whatelse in the tranny would need to be upgraded to handle say 250-300HP?

Originally Posted by yetibone

If you use stock IRS Beetle trailing arms, with the stock stub-axles, then you should use the stock IRS Beetle axles, and their CVs'.

Since I'm bug is slammed I'm a little worried about the angle the stock beetle CV's would be at. I heard they fail after 17 degrees of angle.

Originally Posted by yetibone

If you use Porsche stub axles in the Beetle, or early 944 steel trailing arms, you should use the stock Beetle CVs' on the inside, and early 944 CVs' on the outside of stock IRS Beetle axles.

If you use Porsche alloy trailing arms (wide or narrow), use the late 944S (after '86) *NON TURBO* axles with Beetle CVs' on the inside, and non-turbo 944 CVs' on the outside..

I have stock beetle trailing arms right now. I'm going to do the swap sometime in late March and drive it until winter. From there I'm going to tear it down for paint, body work and a turbo'd 1700cc typeIV motor. So I want to make sure I'm not doing something twice.

[yetibone]

The intermediate plate can be upgraded to a much stronger aluminum component. I believe that Bug@5speed can help you with that, along with the front housing.

Your CV angle should be fine. I was riding mine on the bumpstops a few weeks ago, and had no issues at all, except for the fact that I was riding on the bumpstops. I don't think you can physically achieve an angle that would destroy them by lowering the car, and also lowering the transmission in the chassis as far as possible, but I could be wrong.