Andy:
The timing gear is all interchangeable but you may need to use the deeper TR6
timing cover and tensioner to accommodate the dual chain setup depending on
what cover is presently on your GT6 engine.
Cheers!
Mark
Sent from my iPad
> On Jan 8, 2017, at 11:00, fot-request at autox.team.net wrote:
>
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> Today's Topics:
>
> 1. TR4 Lemons race car project restarting (Andrew Packard)
> 2. Re: TR4 Lemons race car project restarting (Jason Sukey)
> 3. Re: TR4 Lemons race car project restarting (Scott Janzen)
> 4. Re: TR4 Lemons race car project restarting (Charly)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 7 Jan 2017 18:05:32 -0800
> From: Andrew Packard <apackard68 at att.net>
> To: fot at autox.team.net
> Subject: [Fot] TR4 Lemons race car project restarting
> Message-ID: <0697AD95-E87C-4BC4-BD02-9AE9B30D4335 at att.net>
> Content-Type: text/plain; charset=us-ascii
>
> 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
>
> ------------------------------
>
> Message: 2
> Date: Sun, 8 Jan 2017 08:08:10 -0500
> From: Jason Sukey <jsukey at gmail.com>
> To: Andrew Packard <apackard68 at att.net>
> Cc: FOT list <fot at autox.team.net>
> Subject: Re: [Fot] TR4 Lemons race car project restarting
> Message-ID:
> <CAMmo4o9qiHvGvi0R7fv49H-ZAf6O1k4U2_75NTUVxbUEKQgrDg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> 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
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: http://autox.team.net/mailman/
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>
> ------------------------------
>
> Message: 3
> Date: Sun, 8 Jan 2017 09:20:18 -0500
> From: Scott Janzen <sjanzen at me.com>
> To: Andrew Packard <apackard68 at att.net>
> Cc: 'Friends of Triumph' Triumph <fot at autox.team.net>
> Subject: Re: [Fot] TR4 Lemons race car project restarting
> Message-ID: <5E240330-F139-4B65-9389-6C6DFC1E95C1 at me.com>
> Content-Type: text/plain; charset="utf-8"
>
> 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
>
> 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
> _______________________________________________
>
> http://www.fot-racing.com <http://www.fot-racing.com/>
>
> Donate: http://www.team.net/donate.html <http://www.team.net/donate.html>
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> gmail.com <http://autox.team.net/mailman/options/fot/jsukey at gmail.com>
>
>
>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
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>
> ------------------------------
>
> Message: 4
> Date: Sun, 8 Jan 2017 08:55:21 -0600
> From: Charly <charly at mitchelplumbing.com>
> To: "Andrew Packard" <apackard68 at att.net>
> Cc: FOT list <fot at autox.team.net>
> Subject: Re: [Fot] TR4 Lemons race car project restarting
> Message-ID: <57277.1483887321 at mitchelplumbing.com>
> Content-Type: text/plain; charset="utf-8"
>
> Andy, the timing gear should be interchangeable from the TR6 and GT6.
> Charly Mitchel
> TR6 #44
>
> On Sun 08/01/17 5:08 AM , Jason Sukey via Fot fot at autox.team.net sent:
>> 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" 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
>> _______________________________________________
>> http://www.fot-racing.com [3]
>> Donate: http://www.team.net/donate.html [4]
>> Archive: http://www.team.net/archive [5]
>> Forums: http://www.team.net/forums [6]
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/fot/jsukey at gmail.com [7]
>>
>>
>> Links:
>> ------
>> [3] http://www.fot-racing.com
>> [4] http://www.team.net/donate.html
>> [5] http://www.team.net/archive
>> [6] http://www.team.net/forums
>> [7] http://autox.team.net/mailman/options/fot/jsukey at gmail.com
>>
>>
>
>
>
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>
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> End of Fot Digest, Vol 100, Issue 6
> ***********************************
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