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Re: Spitfire Transmission Problems<3510C223.984B2E7D@bellsouth.net>

To: schuyler grace <schuyler@bellsouth.net>
Subject: Re: Spitfire Transmission Problems<3510C223.984B2E7D@bellsouth.net>
From: RICHARD.JACKSON@NENE.AC.UK
Date: Thu, 19 Mar 1998 10:42:33 +0000 (GMT)
Cc: "triumphs@autox.team.net" <triumphs@Autox.Team.Net>, RICHARD.JACKSON@NENE.AC.UK

>Continuing the transmission thread, I've been wondering what in the
>world is going on inside my Spit's transmission.  (Actually, I'm sort of
>jealous of you guys burning rubber in your "vettes" and 7s.)  The
[snip]
>noise or no pull at all or both.  Could it be the overdrive, even though
>it isn't engaged?  BTW, this is a late-model three-rail and J-type.  I
>don't think it's something screwy going on with the rear end, because
>I've changed out the old, noisy one with a rebuilt unit, and there has
>been no change in these symptoms.

Sorry to say this, but I reckon you've rebuilt your gearbox for nothing, that
is assuming you have an overdrive, Apparently there were a lot of badly made
J type overdrives around the late 70's, If I remember correctly, it's the one 
way clutch in the OD unit that is at fault!  If you have a d-type OD then I
seem to recall hearing that some of these had a bad casting for the adaptor
plate.  Coming off the clutch plate in the OD are 4 threaded bars, these are
used to hold a steel bar which the hydraulic pistons push against(Yeah, I know
a crap description, but it's the best I can do :-)), anyway, in the adaptor
plate are 4 holes that the ends of these threaded bars fit into, on the dodgey
casting these holes are not quite in line so that the clutch as a unit cannot
move correctly.  

But anyway, assuming that you have a J-type overdrive I would say that your
problem most probably lies with the one way clutch in the OD!!!   

Cheers

Rich

ps, If you don't have OD, I ain't got a clue.  :-)

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