[TR] FW: TR3 gearbox

[DAVID MASSEY]

The A-type overdrives are all the same but you will need a new layshaft for the non-overdrive transmission.  The TR3 mainshaft won't work in the TR6 transmission and the non-overdrive mainshaft won't accept the overdrive.

Dave 


 

    On Wednesday, October 25, 2023 at 08:24:25 PM CDT, dave northrup <dave at ranteer.com> wrote:  
 
 
Correct me if I’m wrong, but I don’t think you can.  If I’m wrong, that’s totally the right answer!!!
 
  
 
Anyone know the answer to this???
 
  
 
From: auprichard uprichard.net <auprichard at uprichard.net>
Sent: Wednesday, October 25, 2023 4:44 PM
To: dave northrup <dave at ranteer.com>
Cc: triumphs at autox.team.net
Subject: RE: TR3 gearbox
 
  
 
Why don’t you put the overdrive from the TR3 gearbox on the TR6 gearbox ?
 
  
 
The TR6 gearbox is a better overall unit, so if it were me, I’d opt for it in a car with the upgrades you list.
 
  
 
I have 5 TRs and all of them have TR6 gearboxes with A-types.
 
  
 
Andrew Uprichard
 
  
 
From: Triumphs <triumphs-bounces at autox.team.net>On Behalf Of dave northrup
Sent: Wednesday, October 25, 2023 4:37 PM
To: Triumphs <triumphs at autox.team.net>
Subject: [TR] TR3 gearbox
 
  
 
I recently acquired a car with a TR3 overdrive that probably needs to be rebuilt.  I was wondering – is the non synchro first gear really an issue? 
 
  
 
The car has a TR4 engine anyway and I have a nice TR6 tranny (non overdrive).  We do not care about originality; rather we are going for performance with a mild cam, 89 mm pistons, lightened flywheel, etc
 
  
 
Am trying to decide if I should sell the TR3 tran to fund the upgrade on the TR6 tran
 
  
 
both the engine and tran were out of the car; its going to need some work anyway
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