Andrew Mace wrote:
>
> On Sat, 7 Feb 1998, Kevin B. Rhodes wrote:
>
> > Simple question, would the gear ratios be the same in a 74 Spit
> > differential without O/D be the same as those in a 77 with O/D? I am
> > contemplating swapping the unit from my low mileage parts car for the
> > rather noisy one in my runner.
>
> Should be the same, so long as both are U.S.-spec. cars. They had 3.89:1
> gears from 197-80, except for the 1972 models (4.11:1 then). UK-spec.
> 1500s used a 3.63:1 diff.
>
> > Next question - any pointers for doing this swap?
>
> Pretty easy, actually. Toughest parts are the long bolt through the rear
> mounts of the diff., and muscling the old one down and the new one up.
>
> Naturally, this is a good time to replace the rubber mounts, check out
> the u-joints and other stuff (like other bushings in the rear
> suspension), maybe get some new "nyloc" nuts for the drive flange bolts
> (believe me, you don't want these loosening up).
>
> Oh, and make sure the "new" diff. if filled to capacity with the 90
> weight before you put it in. It's easier to fill on the bench!
And be sure not to perch the thing on a cardboard box!!!!!!!!!
> --Andy
>
> * * * * * * * * * * * * * * * * * * * * * * *
> * Andrew Mace, President and *
> * 10/Herald/Vitesse (Sports 6) Consultant *
> * Vintage Triumph Register *
> * amace@unix2.nysed.gov *
> * * * * * * * * * * * * * * * * * * * * * * *
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