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Kabooms · 07-19-2013, 07:32 PM

I have gone through two differentials in 6 months, both times the differential began whining and it continually gets louder until the pinion gear ends up shedding teeth when doing a pull. Here's the setup:

First Diff-S13 R200 Differential with Nismo 2-way lsd, Motul 90PA fluid, changed twice in 4k miles. Broke at around 5500miles

Second Diff- S13 R200 rebuilt with new OEM bearings and crush sleeve at local shop, same Nismo 2-way differential (cleaned and checked for damage) KAAZ LSD diff fluid.

CAR- S14, 1JZ, R154 Trans, 435whp,370tq. The car has never seen the track but I do occasionally make a few 2nd through 4th gear pulls.

Has anyone had this issue before or know why this is happening? I have read that the R200 is good for 500hp in a track car, and i know others with close to the same hp that do not have any issues.

07-19-2013, 07:32 PM	#1
Kabooms Join Date: Jul 2011 Location: Charleston, SC Posts: 18 Trader Rating: (0)	HELP!! Why am i breaking pinion gears I have gone through two differentials in 6 months, both times the differential began whining and it continually gets louder until the pinion gear ends up shedding teeth when doing a pull. Here's the setup: First Diff-S13 R200 Differential with Nismo 2-way lsd, Motul 90PA fluid, changed twice in 4k miles. Broke at around 5500miles Second Diff- S13 R200 rebuilt with new OEM bearings and crush sleeve at local shop, same Nismo 2-way differential (cleaned and checked for damage) KAAZ LSD diff fluid. CAR- S14, 1JZ, R154 Trans, 435whp,370tq. The car has never seen the track but I do occasionally make a few 2nd through 4th gear pulls. Has anyone had this issue before or know why this is happening? I have read that the R200 is good for 500hp in a track car, and i know others with close to the same hp that do not have any issues.