I just recently did a metric $hit ton of mods to my car, one being the 6MT and M3 DCT (3.15) rear diff/axles swap. Before anyone asks why I dropped the 6AT after going through all the trouble of finding the 6AT clutch/bushing solution...well it's simple, I'm old school and love smashing gears and old school bitches and old school bitches love stick shifts.
So anyway, I went with DSS for the axle upgrades and the one piece chromoly driveshaft since that's what those hillbilly yahoos over at Motiv run. Up until now, the specs for that driveshaft have been somewhat unicornish in that nobody ever bothered recording them, not even DSS. So, for anyone wanting to do this mod or already has the 6MT/M3 rear stuffs, here are the specs you'll need for DSS to build the one piece unicorn driveshaft for the aforementioned hardware...
1) Overall dimension from the trans output flange (guibo off and in the garbage) to rear diff input flange (6 bolt) - ~1,415mm
2) Trans Yoke - CAPL-4 w/105mm bolt circle diameter and 94mm bolt circle diameter (6 bolt) CV with grease cup. This is an off the shelf part at DSS, however, the 3 bolt holes for the trans side are machined at DSS so the 105mm dimension is critical. It's basically an adapter plate that replaces that hor$e$hit guibo.
3) Rear joint or flange - 94mm 6 bolt CV with hellcap. Same exact CV as the other end except the grease cap is slightly modified so it better fits into the relief groove in the rear diff flange.
4) Material - 3” Chromoly
To keep things as painless as possible, you'll still need to input these specs into their online form since this is still considered to be a "custom" order in spite of the fact that they have now built 4 of these that I personally know of. So don't call them directly trying to do this over the phone. It'll only diminish your confidence in them.
Good luck, Godspeed and may the force prosper your longevity
Pics for fapping purposes...
So anyway, I went with DSS for the axle upgrades and the one piece chromoly driveshaft since that's what those hillbilly yahoos over at Motiv run. Up until now, the specs for that driveshaft have been somewhat unicornish in that nobody ever bothered recording them, not even DSS. So, for anyone wanting to do this mod or already has the 6MT/M3 rear stuffs, here are the specs you'll need for DSS to build the one piece unicorn driveshaft for the aforementioned hardware...
1) Overall dimension from the trans output flange (guibo off and in the garbage) to rear diff input flange (6 bolt) - ~1,415mm
2) Trans Yoke - CAPL-4 w/105mm bolt circle diameter and 94mm bolt circle diameter (6 bolt) CV with grease cup. This is an off the shelf part at DSS, however, the 3 bolt holes for the trans side are machined at DSS so the 105mm dimension is critical. It's basically an adapter plate that replaces that hor$e$hit guibo.
3) Rear joint or flange - 94mm 6 bolt CV with hellcap. Same exact CV as the other end except the grease cap is slightly modified so it better fits into the relief groove in the rear diff flange.
4) Material - 3” Chromoly
To keep things as painless as possible, you'll still need to input these specs into their online form since this is still considered to be a "custom" order in spite of the fact that they have now built 4 of these that I personally know of. So don't call them directly trying to do this over the phone. It'll only diminish your confidence in them.
Good luck, Godspeed and may the force prosper your longevity
Pics for fapping purposes...
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