Quote:
Originally Posted by mhiscott
I'm starting to think about putting an aftermarket LSD in my FRS after last year's track days. I use the car for grip driving on roadcourse/time attack as well as some autox.
Currently I'm using the oem torsen diff, and I have found the car to not be very planted on corner exit. Particularly when weight is uneven on the rear axle.
I had done some research on this prior to now and many folks seem to suggest a 1.5 way (say a cusco or os giken) would be great for track use. I wonder, though, if a 1 way may be better. Wouldn't a 1.5 way promote a bit of understeer on corner entry due to the push of it effectively providing rear lock on the entry?
I'd love to hear some input on this from guys who have used both in track environments.
Mike
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When we ran an open diff we were experiencing understeer in some long sweeper corners from middle to exit.
After installing a Cusco 1.5 the car still had the same understeer in the sweeper but exit speeds for other corners increased.
We loosened the preload on the diff to allow the inner rear wheel to "freewheel" a bit more and solved the problem easily.
With a diff it's one more component to fiddle with set-up adjustments. Compared to an open diff, where grip issues need to be fixed using suspension and tire pressures.
We have no experience with a 1-way.
Good luck