Scott,
Thanks for reply. We have GT6+ engine. We'll be using all TR6 stuff for the
throw out bearing so hopefully few issues there, but we'll keep track of this
additional potential issue.
Andy
On Jan 8, 2017, at 6:20 AM, Scott Janzen wrote:
> I also run a Tr4/6 box in my GT6. As Andy says, you need the TR6 engine
> plate, and probably an extended pilot bushing (mine extends out to the face
> of the GT6 flywheel). Clutch splines are different so you may need to use a
> Tr4/6/7 clutch disk, or have one made. Though it?s expensive, the gear ratio
> issue can be addressed with a Moss Europe close ratio set, which greatly
> raises 1 and 2, three slightly and leaves 4 unchanged.
>
> TR6 slave cylinders mount forward/below, GT6 rearward/above - not sure how it
> will fit in your car. Modifications are needed to the shifter fork and shaft
> to accept the tapered bolt from the reverse direction for the GT6
> configuration, and a new bracket to hold the slave cylinder.
>
> The TR6 box is bullet-proof compared to the GT6 box - do not consider going
> that direction.
>
> Timing chain/gear - I think they are interchangeable - look on the Wishbone
> Classics website or call Scott Harper at Team Triumph or any other supplier.
>
> I assume you are starting with the later GT6 engine - not the early narrow
> port engine? GT6+ should be the later/better one.
>
> On Jan 8, 2017, at 8:08 AM, Jason Sukey via Fot <fot at autox.team.net> wrote:
>
> Hi Andy,
> I ran a TR gearbox in my GT6 street car for quite a few years. The gear
> ratios aren't as sweet as the GT6 box, but it's a nice stout piece. The TR6
> rear plate is what you need. I'd stick with the GT6 flywheel though, it's
> lighter than the TR flywheel. They use the same pressure plate, so no
> worries, just use a TR6 clutch disc. You will need to make a custom pilot
> bushing.
>
> Jason Sukey
>
> On Jan 8, 2017 12:18 AM, "Andrew Packard via Fot" <fot at autox.team.net>
> wrote:
> Hello from Bay Area:
>
> We have finally restarted our TR4 24 hours of Lemons race car project.
> Initially we were going to use a rotary drive train from an RX7, but have
> since abandoned that and returned to a Triumph drive train. Thanks to Jeff
> Durant, we now have a GT6+ engine. We have a 4 speed TR6 tranny to start,
> but after a test fitting on the GT6+ engine it's a close but not quite a fit.
> The main concern is that the starter mounting area does not match up.
>
> What are the options for this combo? Do we need to use TR6 flywheel and rear
> engine plate to make this pairing work? Have other used this? What
> alterations/combos are required to make this work?
>
> Second question:
> I do not see two row timing chain and sprockets for sale for the GT6+. Are
> the TR250/TR6 components compatible?
>
> Thanks for the support of the group as we work through our issues to get a
> 100% Triumph powered TR4 on the track!
>
> Andy Packard
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