Quote:
Originally Posted by Slow Steve
Thanks, that's the info I was looking for. I'll pick one up on the way home. I have the axles but I'm missing the trans and looking at a couple of different trans options. I just wanted to make sure the combo will work or can be adapted to work.
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There's 3 things to worry about; the drive flange on the transmission, CVs/axles themselves, and the stub axle that fits into the wheel hub.
Basically,
* early 108mm flanges (coarse spline) with 4 M10 bolts and two dowels up to '75
* 100mm flanges (fine spline) with 6 M8 bolts 75-84 (and some very early 85)
* late 108mm flanges (fine spline) with 6 M10 bolts, all 85 up.
915's with 108mm fine-spline flanges are a one-year-only thing, because the G50 was introduced the next year. You can apparently adapt G50 flanges, or Albin can supply 108mm fine-spline ones.
Early turbo (74-84) use 108mm flanges but thicker CVs/longer bolts - everything 85 on is standardized (except 930 retained the stub axle, and never used the attached stub axles the '85 911 did).
So although you can mate the later 108mm CV joints on the early transmission (and I believe your wheel hubs will accept the G50 911 type stub axles), the early 108mm 915 flanges will not interchange with later 915's - and 915 fine-spline 108mm flanges are rare.
And as far as I know, 100mm coarse spline flanges simply don't exist unless you get them made.
CV Joint and Axle/Half Shaft Compatibility