----- Original Message -----
From: Chris De Wet <[EMAIL PROTECTED]>
>
> I have been advised that the Vitesse/GT6 gearboxes are weak, prone to
> failure and troublesome. It WILL apparently fail if you put more than
> standard torque through it or drive in a 'spirited' fashion. It will not
> last with any performance increases. True/false ? Anyone any ideas or
> comments ?
WHile the gearbox is certainly weaker than the big saloon box, I know several owners
of 2.5 litre engined GT6s who've not had problems with the standard gearbox. The diff
on the other hand IS a problem, certainly the weakest link in the chain.
> Apparently 3.63:1 is "the best" diff ratio to use with the 2L GT6 engine and
> saloon o/d gearbox (possibly even with the standard Vitesse/GT6 o/d
> gearbox). Unfortunately I have no idea where one could obtain such a 3.63:1
> differential, but the guts from a TR7 four speed diff is 3.63:1 and could
> possibly be transplanted into a Vitesse/GT6 diff casing. Anyone any ideas or
> comments ?
The early TR7 axle is I believe essentially the same unit as used on the non-Sprint
Doomites. If that's correct then the diff assembly is very similar to the later
Spitfire type. From memory there is an additional fixing hole which needs to be
drilled in the nose-piece (can't remember the specifics) but the internals are the
same.
Cheers,
Bill.
--
Rarebits4classics
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