Hi all,
Working on the car (hoorah!) and just about to order the propshafts but wanted a sanity check from someone who has also fitted the MNR reverse box... Could someone confirm that the flange holes come out to be 53mm and 44mm before I go and order my propshafts please?

And the Sierra diff are 59mm and 66mm?

Thanks,

Atif

Hi, measurements for small flange seem correct, it's a std 1140series flange 68.95mm (2.75"pcd with 40degree spacing.

Measurements for larger flange do not seem quite correct, I believe Sierra has 90mm pcd with 40degree spacing which should give 58.75mm & 68.94mm between adjacent bolt holes.

All just theory based but might be worth double checking before ordering.

Cheers Davie

Thanks Davie. Yep, I measured diagonally and got 69mm for the reverse box and BEC prop adaptor. I got 90mm for the Sierra.

Now to order the propshaft!

quote:

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Originally posted by daviep
Hi, measurements for small flange seem correct, it's a std 1140series flange 68.95mm (2.75"pcd with 40degree spacing.

Measurements for larger flange do not seem quite correct, I believe Sierra has 90mm pcd with 40degree spacing which should give 58.75mm & 68.94mm between adjacent bolt holes.

All just theory based but might be worth double checking before ordering.

Cheers Davie

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