Anyone used a small case diff in an m20? Failures seem to be the real concern but I've never heard of one failing - but I've never heard of anyone using one in the straight six either. What other drawbacks would there be aside from durability. It can withstand the speeds, but can they withstand the torque?
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Driving is the only way to go faster.... -
No.
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Originally posted by e30MattMy mountains are better than yours.Comment
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I guess the 20-30%% more torque of an m20 is just too much for it. Just figured I'd ask since I've never seen it discussed.Driving is the only way to go faster....Comment
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When I helped my friend swap an m20 into his 318i shell the diff went out. On the first drive it started to click badly. Then eventualy he said about 2 weeks latter it died and he swapped in his big case diff.85 325e 2.7 ITB'd stroker
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this has been gone over.
it would take a lot of torque just to shear the differential internals apart and cause it to fail.
the real "damage" comes from the intial "shock" from clutch dropping, hard driving etc etc.
not the best analogy, but it will do.
if you try to pull a couple of peices of string apart just by gently pulling and working your way up to pulling as hard as you can, you wont break them. but if you rip them apart in a quick strong motion, they will break easily. i do believe this has some physics term but i cant remember it. I assume this applies to differentials. Anyone want to correct me?
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Impulse?
AaronComment
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