[TR] [Net] A-type to J-type !

[David Friedlander]

Yes, John. My original email said “Yes, I have Dan Masters’ book” and I
cited pages 99-100. His briefest chapter. But there’s no instruction on
converting from one to the other- I need to derive that based on what’s
different. But, that’s not always intuitive or obvious…

Thanks,

Dave

On Wed, Oct 30, 2024 at 6:40 PM John Cyganowski <janah at att.net> wrote:

> Hi Dave-
>
> Chapter 22 Page 99 in the Dan Master Electrical manual has a good write up
> on the difference in wiring the A-type and the J-type. You should be able
> to get a wiring diagram for your year.  The OD relay and connections are
> still there. You could simply tape them up and leave them. If you are using
> your top cover, one of the switches on the top of the cover is only for the
> 2nd gear function.  You could pull those wires off and simply leave the
> switch in place as you have to plug the hole with something.
>
> Best Regards
> John Cyg
>
> On Wednesday, October 30, 2024 at 03:12:45 PM EDT, David Friedlander via
> Net <net at netriumphs.org> wrote:
>
>
> Gentlemen ~
>
> My A-type transmission (which was installed in my '74 TR6 when I got it,
> many years ago), bit the dust. I have now swapped it out for a rebuilt
> J-type from John Esposito at Quantum Mechanics. Though the "new"
> transmission is now installed (with necessary modifications to the rear
> mounting bracket) mechanically, I have a few questions.  I am wondering if
> anyone else has changed from an A-type to a J-type. Among my questions is:
> Since the J-type uses no overdrive relay, what does one do with the wires
> that are presently connected to the OD relay my A-type needed? Also, since
> the A-type functions in 2nd, 3rd and fourth and the J-type only in 3rd and
> fourth, what happens with the "extra" wires at the interlock switches there?
>
> Yes, I have Dan Masters' book... His section on Overdrives is very brief
> (pages 99 and 100) and doesn't really mention swapping out procedures.
>
> Any help/insights on these and any other differences I may yet encounter
> that anyone can offer would be greatly appreciated.
>
> Dave Friedlander
> '74 TR6
> '59 TR3A
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