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Wanted Gearbox Output Flanges

Posted: Thu Jul 08, 2021 11:34 pm
by Strictly
Im looking for a pair of output flanges, that are close to dimensions A to D below. The ones I have are from a 1969 902/14 gearbox, with a 108 CV joint (4 x M10 + pins); I want to fit this gearbox to some shafts which are currently 100mm CV (m8 bolts). 

I believe these are called "coarse" flanges, and other coarse flanges may fit. If I cant find these in 100mm CV, then I will consider 94mm CV, or even 108CV as I already have but with a shorter E dimension (i.e total length is shorter), as I may need to cut some driveshafts down and this would save the hassle.

17 teeth coarse spline

A) 74mm

B) 61mm

C) 45mm

D) 35mm

E) 109mm

Of the above B, C and D are the most important, E and A can be different from mine. All dimensions approx, I just did a quick measure.

Luke

07725 860116

Re: Wanted Gearbox Output Flanges

Posted: Tue Jul 13, 2021 7:10 am
by 911hillclimber
I think tuttills have these machined from scratch?
You could also ask M B engineering up in the Late District.

Re: Wanted Gearbox Output Flanges

Posted: Sat Jul 17, 2021 11:47 am
by Strictly
Just to say im sorted now, i have decided to leave the gearbox flanges as they are, and have found these below which work, Basically its a 25 spine inner CV hub with a 108mm (6 x M10) outer CV. Will need a bit of machining (width), but fundamentally it works, and means I can mix a SC driveshaft to a 901/902 gearbox.

https://www.ebay.co.uk/itm/114739336740 ... SwvZxgWw3y

P.S in case anyone is wondering WTF! lol, i am temporally fitting a VW beetle engine into a 911SC, it allows me to keep the whole project moving by having something i can "drive". I then plan to do a full strip of the engine (not run in 14 years or etc). Sure i could get it to run as is, easy peasy, ive done it before....but as if it has a good factory hardened std/std crankshaft which being an SC it probably does, then i would rather keep it that way. Also there were metal shavings in the oil, so thats reason enough for me not to start the engine as is, and pull it apart to have a proper look.

It also allows me to spend the money on all the other bits i still need (brakes, suspensions, etc, etc), then come back to the engine and the fuel injection when I have a few ££££ to spare, and of course I can sell the early gearbox/vw engine as a full "kit" when I am done, in case someone needs one for a shell car.