Eric et all,
in addition, you also need to change the springs in the OD, because the Spit
has a lower torque as the TR6. You might get an adapter plate (maybe MOSS
sells it separately), but I think it's easier to get a complete TR6 or
Triumph 2500 Tranny/OD setup.
An alternative I recommend to change the diff ration to the 3.45 PI type,
that reduces the revs as well. Of cause, that only make sense if you plan
(or maybe have to) rebuild your differential.
I rebuild my 74 TR6 diff a couple of yours ago and also have a J-OD in my
car. I can now drive it at 95 mph at app. 4000 RPMs. (only on German
Autobahn of cause...:-)
Regards and have a nice Thanks Giving
Jochen Saal
Munich/Germany
-----Urspr|ngliche Nachricht-----
Von: owner-triumphs@autox.team.net
[mailto:owner-triumphs@autox.team.net]Im Auftrag von Erik Quackenbush
Gesendet: Dienstag, 20. November 2001 23:02
An: Tim Gaines; TRIUMPHS@autox.team.net
Betreff: Re: J OD switch from Spit to TR6
You'll need to find an output shaft for a TR6 overdrive transmission. It's
not the same as the regular TR6 output shaft (it has an eccentric lobe to
drive the O/D hydraulic pump). I'd be surprised if the tiny Spitfire
transmission used the same shaft.
To separate the O/D from the Spitfire transmission you'll have to engage
it's internal clutch. This can be accomplished by spinning it up to
operating RPM, activating the solenoid, and then stopping it with the
solenoid still engaged. It can also be accomplished by attaching a
hydraulic pump to the pressure test port and pumping it up to 460 PSI.
My guess is that it would be easier to sell the Spitfire O/D transmission
and use the money to buy a TR6 O/D setup.
-Erik
At 02:33 PM 11/20/2001 -0500, Tim Gaines wrote:
>I have a 1980 Spitfire parts car with a J type overdrive that
>I would like to put into my 1974 TR6. Based on some questions
>I asked of the list last year, I think the units for Spit and
>TR6 are the same except for an adaptor plate. Is it hard to
>find such an adaptor plate? And if I can find one, what else
>must be done to mount it on the TR6 tranny? I've got a spare
>TR6 tranny that I will probably rebuild (or have rebuilt)
>when I actually get down to the OD transplant. Thanks for
>any advice.
--
Erik Quackenbush, Midwest Filter Corporation
1-847-680-0566 http://www.midwestfilter.com
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