Graham,
It's a bit more than the PO putting the non-O/D extension on the back half
of the tranny. They use different length mainshafts so it was more likely a
straight swap out with a salvage yard tranny unless only the mainshaft was
swapped which pretty much equates to a full rebuild insofar as time and more
unlikely. You may want to try to check the transmission serial number - it
should be the 1972 range.
As far as the rebuild, your synchros may be in great shape but if there is
excessive noise in neutral it probably is time for a rebuild. The real
problems include bearing, bushing and countershaft wear. If you have to
take a "half step rest" when shifting between 2nd and 3rd because the tranny
catches a tooth during a faster shift it's definitely time for a rebuild.
You can find "A" drives, you'll just pay the extra $$$$ for the core charge.
But I believe your 6 came with the "J" O/D which are more common and
somewhat less expensive.
Good luck!
Greg
CD6250L
----- Original Message -----
From: "Vink, Graham" <vinkg@fleishman.com>
Cc: <6pack@autox.team.net>
Sent: Sunday, March 16, 2003 1:19 PM
Subject: look ma, no overdrive!
> I was deep in the bowels of my 72 TR6, trying to discover why the
overdrive
> didn't work when I discovered the problem -- no overdrive unit!
>
> I would guess at some point the previous OD had blown up, and rather than
> replace it, some DPO merely installed the non-OD transmission extension.
The
> car was OD originally -- has the switch, badge and wiring.
>
> So ... where do I find an A-type OD without a core to exchange? (It's
> A-type, right, for that year? Also, is it the same A-type that's found on
> some other European cars of that era -- Volvo, etc?)
>
> Also mulling whether to buy a rebuilt tranny and OD as a unit ... existing
> tranny has GREAT synchros, but is very noisy when idling in neutral.
>
> Thoughts, o wise ones? (beyond to look under the &*^*&^*(^! car the next
> time to see if the OD is there!)
>
> (BTW, I bought this car on E-Bay about a year ago from a small dealer ...
> I'm pretty sure he didn't know the OD was missing, and he had fully
> disclosed to me that the OD was not working -- ie nothing happened when he
> drove it and flipped the switch.)
>
> Graham
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