Stock 02 3.9 Torshen Diff LS2 conversion
 

so ive already got my 8.8 setup laying right next to my car and its going in... but im curious... has anyone ever used the stock torshen diff with 400ftlb's? i mean alot of people are switching the 7" miata diff for what a 7.5 diff? and they are having zero problems with that, im personally going all out with the 8.8 ect... has any miata ever grenaded a torshen diff? you would have to upgrade axles im sure, how about the turbo guys do they have any problems?


i ask because the 7.5 and 8.8's we trade out for are rated from the factory with no more than what 200ftlb's torque MAX, thats still a far cry from the 400ftlbs that we put on them and they do fine.

so anyone have anything?

If I hadn't already built my 8" mazda rear, my car would have a stock Miata torsen with 3.6 gears in it. I just haven't found anyone who wanted to retain a torsen but wanted the strength the 8 inch rear would provide.

If I were ever to build another car, it would have the stock torsen in it.

so you think sticking with a stock torshen would be okay? im willing to give it a shot... hell ive got the 8.8 as a back up, the stock 02 LS Miata has an 8" torshen? i thought it was smaller than that

Stock 1.8 Miata's have a 7 inch ring gear. The FD RX7 torsen in my car has an 8 inch ring gear.