[Healeys] Differential vs BN2 OVERDRIVE

[Michael Salter]

One consideration regarding the use of 1st gear is the durability of said
gear. With a count of only 13 the straight cut teeth on the laygear tend to
wear very quickly when subjected to any sort of load.
Although laygears and 1st gears are available rebuilding a gearbox is not
an inexpensive exercise so starting off gently in 2nd gear is HIGHLY
recommended.

M

On Thu, Mar 5, 2020, 8:35 AM Mark Goodman, <mkgoodman at att.net> wrote:

> If you change from a 3.90 to a 3.54 rear end you lose most of 1st gear.  I
> changed my overdrive on my BJ8 to a BN2
> and in 4th gear overdrive my engine operates about 600 RPM lower.  It is a
> much better way to go.
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