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There doesn't seem to be much consistancy when it comes to drive flanges on Porsche trans'.
I have a 902 5 speed from a '69 912 (not a high HP car) that has the large (110mm?) 930 size flanges, I have a 914 5 speed with the small type 1 size flanges (as expected), I have a set of what I think are mid-late 70s 911 flanges that are 930 size but are NOT the same as my 912 flanges!
The 914 and 911 flanges on my bench are shorter by about 1/4" than my 912 flanges, the seal area on the 911 and 914 flanges are different lengths but the seal rides in the same place. If I were to install the 911 or 914 flanges in my 912 trans, the drive splines would not be fully engaged and may strip when I dumped the clutch.
I keep hoping to find some 100mm (944/type 2 size) flanges, I guess I'll keep looking. Who knows how many sets I may end up with!!
ken
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