At 4:23 PM -0500 11/1/00, Bill King wrote:
>Is it possible and practical to put the 3.909:1 MGB rear axle into a MGA?
>The only 'official' ratios listed for the A are the standard 4.30:1 and an
>optional 4.555. It's my theory that a motor will rev a certain
>predetermined number of times as determined by an unknown force and
>therefore it is to my benefit to get the greatest number of miles out of
>those revs. My car already has a B motor so the power is there for the
>longer gear. The manuals list the rear tracks as:
>A- 48 3/4" (disk wheel)
>B- 49 1/4" (any wheel)
>My question is are the brake drums .25" wider on the B so that mounting my
>original brakes will bring the track back to correct. Also drive shaft
>lengths are different, which is not unexpected. Is this a project worth
>taking on or should I just forget about it?
>Comments please
>Regards,
>Bill King
>59 A
A B rear axle is a bolt in, and I recommend it if you are running a B
engine. With reference to brakes, I recommend a tube type rear axle
with BGT brakes. You get larger pistons, 2 pistons as apposed to the
single piston in the A which results in brakes that are much more
effective and easier to modulate. Your original drive shaft will
work. The variance is track is not significant.
--
Bob Shaw
Check out Shaw's Garage at http://www.mlcltd.com/shawsgarage/
My British Car is NOT leaky - it's merely marking its territory.
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