Here's an interesting discussion on strengthening a GT6 gearbox. One view came
down to this:
"It is possible to have a three rail box built using a special, shorter hybrid
mainshaft, which uses the beefier single rail parts, the OD adaptor plate from
the earlier Dolly box and J-type OD. This is probably the ultimate "spec" BUT,
the actual strength of it will depend on the condition of the parts used
(bearing mind that new parts are pretty much gone now) and the skill of the
builder."
http://sideways-technologies.co.uk/forums/index.php?/topic/6308-gt6-gearbox-strengthening/
Bud
Extreme Parts Racing (more than just a haircut)
71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
69 Spitfire MK III (back up FE engine/dinghy car)
93 Minnie Winnie Race Support Vehicle
77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
On Feb 21, 2018, at 9:46 AM, Vince G via Fot <fot at autox.team.net> wrote:
> Seeing the recent discussion on Type A Overdrive I thought I?d take advantage
> of this great knowledge resource and ask opinions on restoring my street GT6
> OD that failed last year (worn out basically) versus abandoning the triumph
> set up for a T9 retrofit while still available.
>
> What is anyone?s experience with regard to longevity of a Type A overdrive.
> This is my simplest, lower cost solution (about $800) versus the T9 swap at
> about $4000
>
> Additionally I need to get my Track Car also a GT6 up to snuff. I understand
> there may be an option of having someone restore and upgrade the current
> triumph 4 speed versus me purchasing the T9. In this case reliability and
> operability are more important to me than keeping the car period correct. I
> can?t afford the time or money to repeatedly swap out a weak transmission
> that?s prone to failure like a stock box.
>
> Advice and Opinions most welcome.
>
> Thanks everyone
>
> Vince (from Ontario Canada)
> 69 GT6+ #144
> VARAC
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