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Re: Diffs and Wheels

To: Andrew Mace <amace@UNIX2.NYSED.GOV>
Subject: Re: Diffs and Wheels
From: Russ Moore <rem9@cornell.edu>
Date: Fri, 05 Mar 1999 11:27:31 -0500
Andy,
Didn't the Mk 4 have a 4.10:1 diff to compensate for the rotten hp specs
after the emissions changes? The 1500 definately had the 3.89  in the US,
but the mk4 had the 4.10 in the US. I bought up TRF's stock of these years
ago and use them in the race car. definately 4.10, but the later style that
fits the better designed 1500 diff!

Russ


At 10:43 AM 3/5/99 -0500, you wrote:
>On Fri, 5 Mar 1999, Bob Lang wrote:
>
>> The GT6 had several ratios - 3.27 and 3.89 included. If you have a higher 
>> ratio, it is likely out of one of the other Herald derivatives. Spitfires 
>> had 4.10 gears on some of the earlier cars, for example. However, Andy 
>> Mace would be the authority on what ratios would be available.
>
>Whether they'll all fit all diff's, I'm not sure, but the "Small Cars" 
>used, at various times:
>
>3.27 GT6
>3.63 Spit 1500 UK
>3.89 Spit Mk.IV (and 1500 USA), also some OD-equipped GT6s
>4.11 Herald, early Spit, early Vitesse/Sports 6
>4.55 Herald 948 twin-carb, also Triumph (Standard) 10, in solid rear axle
>4.875 Herald 948 single carb
>5.143 (gasp! That was "special order only" for Heralds)
>
>I think that's all of them, unless the early TR7s had yet another ratio, 
>such as 3.45(?) -- again, it was the same center section, more or less.
>
>--Andy
>
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>* Andrew Mace, President and                *
>*   10/Herald/Vitesse (Sports 6) Consultant *
>* Vintage Triumph Register <www.vtr.org>    *
>* amace@unix2.nysed.gov                     *
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