II was tryning to say a r160 from a datto is weaker then the r160 lsd in the suby... my lsd has 140,000 kays and still works fine

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68 510 - soon to be restored into a replica 68sss
69 510 - current build - L20b turbo
91 GT turbo legacy
GET THAT DATSUN DIFFERENCE!

Viscous LSD's are a sealed unit, once they're dead, they're dead.
Their life is usually better than that, depends on how much racing type use they've had though. They've got a bad rap for not handling high horsepower too well and for being a lot less 'predictable' than a plate type LSD.

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Happiness is watching the race.... in your rearview mirror

I had 170+ rwkw going thru the r160 my car rolled off the production line with. Took it 12 months before it got noisy.
After that I used a excellent condition r180 and went to approx 240 rwkw with no problems.
A Subaru r160 will prob be a bit tougher as they have an easier life and are newer. Some argue that LSD will last longer as two wheels will spin and transfer the power but it shouldn't make much difference.

My r160 datto diff had lost some teeth in the little bevel gears in the diff center, so if both wheeles were spinning they should last longer

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Chris Thomas

1971 1600, mild L18, 5 speed

All I want is less to do, more time to do it and higher pay for not getting it done.