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Breaking Rear Drive Sharfts


r34unit
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Passenger side is the side that hops most under axle tramp, due to the way that the torque loads the car left-right.  ie, more downforce load on the right.

That fracture is a very typical torsional fracture.  I agree, probably from fatigue.  They all look like that.  A materials scientist/metallurgist might be able to look at it and tell you whether it started to break on the shorter, darker part of the outer, or if it started to break on the shinier, longer part of the outer.  But either way, you can see what happens.  All the strength is out in the rim.  When it lets go, the centre suddenly twists off leaving that rough finish.

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they are different part numbers so regardless whether they "fit"  material used is probably different Nissan don't allocate two different part numbers for shits and giggles. R33  3970573L50     R34  3970573L00

Edited by Rusty Nuts
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