RE: Adding Overdrive to a 4 speed manual

[Dean Cunningham <DeanC@domain.elided>]

Hi Mike,

Thanks for that information. I already have an original  manual o/d ,
but I can get hold of a couple of j types (from saloons) for under 100
pounds each. I was thinking of keeping one as a spare and holding on to
the other one just in case I meet a stag owner with a 4 speed manual. (I
am *not* in it for the money)
It seems a shame to see these o/d boxes go to the wreckers.
Both come with gearboxes , so I can take the mainshaft out for use in
the stag gearbox.
Will I need to make any mods to the saloon mainshaft or will it  "just
slide in" ??

>As you do not have overdrive at the moment, you will need to change the
>gearbox mainshaft - easy to say but slower to do - so you will have the
>'box on the floor anyway.  You can use the Innsbruck mainshaft to save a
>lot of expense - they are in short supply anyway.

Can you define "early example" a 1973 or later saloon gearbox with a j
type would be generally ok?

>If your 'box is an early example the gear teeth will be incompatible with
>the Stag layshaft, and will also need changing.  If you wanted to swap the
>'box as well, it is almost worth running the gearbox in unmodified trim to
>see if it can stand the pace


thanks for the help
deanc
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