Miata Mailing List: April 1993, Message #88
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   From: (none)
Subject: Re: Miata LSD's
   Date: (none)

> what is the reasoning posed?
> would it be related to the comparatively harsh environment
> of racing and/or autocrossing vs. street use?
> or did you/others run out oil?
 
I can't vouch for the others, but I keep Redline MTL in my diff, and am
pretty religious about changing/maintaining the oil in all my cars.  I saw
Paul's car break the diff, it was at an autocross practice, late in the day
during a decreasing radius turn on the 4th or 6th run in a row.  I would
guess it was the heat/harsh environment.  Basically, the stock diff is not up
to snuff for a racing application diff, and frankly, the a 25% limitation,
its really not much of a LSD either.

(for the uninformed, 25% limitation means that only 25% of the slop between
the wheels is taken out by the diff.  A welded diff would be 100%
limitation.  Most good racing diffs are closer to the 70-80% range)
-- 

Miq Millman       miq@wv.mentorg.com         miq_millman@rainbow.mentorg.com
Mentor Graphics 8005 Boeckman Rd, Wilsonville OR 97070  503 685 1492   C2148