I'm not that familiar with GT6 or Spitfires, but TR3/6 gearboxes are
pretty weak too. Generally the layshaft bearing goes south because
it's small and not all that well supported. I've heard that there are
some fixes for this, including dual bearings on the rear end of the
layshaft. Anyone ever hear of this?
On Sep 20, 2007, at 10:35 PM, Scott Janzen wrote:
> This just came up on the Spit and GT6 forum
> http://members.boardhost.com/GT6-Spitfire/ after my car ate its
> gearbox -
> teeth stripped off the input gear shaft. Steve Smith has been
> running a TR6
> trans for years. The GT6 box is apparently a weak point
> particularly in
> racing and/or with enhanced HP. Look for the dialogue on that site
> from
> about two weeks ago.
> I haven't converted yet, but I think that's the winter project.
> ----- Original Message -----
> From: <igofaster@charter.net>
> To: <fot@autox.team.net>
> Sent: Thursday, September 20, 2007 10:00 PM
> Subject: [Fot] Transmission for racing GT6+
>
>
>> Hello! I'm new to the forum, invited by Bob Kramer. I'm a longtime
>> Triumph
>> friend. I purchased this year the GT6 built by Bob Davis in central
>> Florida. Way nice race preparred GT6, Bob Kramer can attest. My
>> dilema is
>> Mr. Davis did a heck of a job with the Toyota T5 gearbox
>> conversion on the
>> GT6. Recently with CVAR in Texas I enrolled in the driving school
>> at TWS
>> with the GT6. CVAR will allow me to continue for a short time to
>> participate on a no points basis but I must return the Triumph to an
>> appropriate gearbox. I'm open to suggestions. I've always felt the
>> gearbox
>> in the GT6's were soft at best. I had a TR6 gearbox I attempted to
>> install
>> at one time but looked like the frame would have to be cut and
>> modified. I
>> have a nice 1969 with an overdrive transmission, not sure if that
>> is the
>> answer. I only used 5th gear at TWS on the staightaway past the
>> finish
>> line and in the cooldown lap. The diff is the 3.73 (I think) locked.
>> looking foward to the input...
>> kindest regards,
>> Bobby Whitehead
>> 1970 GT6+ #33
>> _______________________________________________
>> http://www.team.net/donate.html
>>
>> s.janzen@comcast.net
>> Fot mailing list
>> Fot@autox.team.net
>> http://autox.team.net/mailman/listinfo/fot
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>
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