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Durability of the OS Giken LSD in NASA SU National Champ Car


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Hey there everyone,

We finally got the opportunity to inspect one of the OS Giken Super-Lock Limited Slip Differentials that was installed in the 2011 Nasa Super Unlimited National Champion car.

This car has a great deal of HP and Torque and runs the Porsche 997 GT3 gearbox, so I figured that there would be some interested in seeing what the internals after a complete year of running look like.

After a complete breakdown and inspection we put this differential back together and put it back into the gearbox without any modifications. We found that the differential had not even really begun to show wear on any of the plates and required no maintenance. It still had the same internal specs as when it first came out the box. This is pretty impressive given the amount of racing hours that this differential has on it.

I don't want to sound like a commercial here though so I will just let the pictures speak for themselves.








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