100 to 108mm flange adapter

[Shaun @ Tru6]

I've looked far and wide and haven't seen anyone make an adapter that would bolt onto a fine spline 100mm transmission flange making it a 108.

Has anyone seen this done, even as a 1-off?

[Walt Fricke]

Shaun
To make a bolt-on adapter you would need to run shorter axles. That would complicate this. Otherwise you would have do some machining and welding and more machining.

[Shaun @ Tru6]

Thanks Walt, do you think the 8-10mm added thickness would need to shorten the axles? I guess that's the most important question.

[KTL]

I agree the adapter would require the axles to be shorter. The adapter will take up some of the "plunge" depth that a CV joint has. If the axle bottoms out in its movement, it'll destroy itself in short order.

Get yourself a set of fine spine 108 flanges and adapt them this way (NOT) Custom Transmission Flange?

[KTL]

This is a good thread from the 914World site where Eric Shea @ PMB shows how he did a flange conversion and used SAW floating axles to establish his proper axle length

914World.com - The fastest growing online 914 community!

[Shaun @ Tru6]

Thanks Kevin, appreciate it. So it is ultimately just too much work I think.

[Trackrash]

Somewhere in this forum I have seen examples of adapters. One was a ring welded on and re-drilled and another was just redrilled. I don't think this sounds like a good idea.

Can't you use later Carrera flanges?

[KTL]

Later Carrera or Turbo flanges are sort of hard to come by. They usually stay with the trans, so a lone pair of them isn't all that common. That said, I know a guy here on the forum who has a set if you want me to send him your way Shaun?

[Shaun @ Tru6]

Thanks Kevin, yes, please!

[Matt Monson]

You can take G50 flanges and shorten them so that the sealing ring location is correct.