[TR] OD gear box question

David P frogeye at porterscustom.com
Tue Nov 30 07:40:14 MST 2021


Yes, J type for a 71' TR6    Yep, some angle iron made it work.. No 
drilling needed... a MIG yes.. LOL  Dave, do you know the reduction 
percentage of the J type?  dp

On 11/30/2021 7:34 AM, DAVID MASSEY wrote:
> Did you get the A-type or J-type overdrive.  They switched in 1973 
> from the A to the J-type and modified the frame to suit.  The J-type 
> is not a direct fit.  It can be done but it is an unorthodox 
> mounting.  IOW: roll your own.
>
> Dave
>
>
>
> -----Original Message-----
> From: David P <frogeye at porterscustom.com>
> To: Triumphs (triumphs at autox.team.net) <triumphs at autox.team.net>
> Sent: Tue, Nov 30, 2021 8:13 am
> Subject: [TR] OD gear box question
>
> Owners,   I acquired a Factory OD gear box for my '71 and discovered
> that the transmission mounts on my chassis do not correspond to the
> mount on the box... So, were the cars ordered with OD modified at the
> chassis mount location?
>
>  With the OD, removing the driveshaft becomes a bit more
> problematic...due to moving the mount rearward nearly 6 inches. DaveP
>
> -- 
> Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 
> My World go here: WWW.PORTERBIKES.COM/
>
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-- 
Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM. 505-352-1378 My World go here:WWW.PORTERBIKES.COM/
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