[Fot] TR Diffs

[BOB KRAMER]

Does anyone know what synthetic lubricants work well in a TR Detroit Locker? 
I've been using GL4 rather than take any chances.

Bob Kramer, Austin Texas
rkramer3 at austin.rr.com
----- Original Message ----- 
From: "Randall" <tr3driver at ca.rr.com>
Cc: <fot at autox.team.net>
Sent: Saturday, March 28, 2009 3:49 PM
Subject: Re: [Fot] TR Diffs


>> All differentials take a lot of power. More even than the
>> transmission. Spiral gears (long tooth contact) 90 degree
>> direction conversion, planetary or LSD. It all sucks power.
>> Absent a significant design difference they'll be roughly the same.
>
> I agree.  Two things possibly worth noting :
>
> 1) the power wasted is roughly proportional to the power transmitted, so 
> TRs
> will presumably lose a lot less absolute power than Hot Rod measured.  IOW
> if they measured 25 hp lost behind a 500 hp V8; a TR with 100 hp might 
> only
> lose 5 hp in the diff.
>
> 2) A higher performance lubricant may help save some of that power.  Hot 
> Rod
> also found something like 7% more power at the wheels by converting 
> engine,
> trans, diff to full synthetic.
>
> I don't have weights either, but the TR3-4 unit seems darn heavy to me. 
> The
> smaller Ford might not be that much worse.
>
> Randall
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