David: To use Mikes gears in your spiral bevel BN1, you must replace the
entire rear end assy, hub to hub with a later hypoid unit. I believe any
unit from a BN2 through BJ7 will fit. Another approach would be to find a
taller gear set for your spiral bevel diff. Alternates were available years
ago, but you will need some luck to find a set these days.
Jim
----- Original Message -----
From: "David" <dcrawfor@san.rr.com>
To: <healeys@autox.team.net>
Sent: Monday, April 25, 2005 1:14 PM
Subject: M Lempert's 3:54
> Esteemed Listers,
>
> After reading rave reviews about putting Mike's 3:54 in your cars, I
> am beside myself. What do I have to do to get his gears into my '54
> BN1 which has the older spiral gears? Change the entire pumpkin,
> axels, etc.? Any idea where I can find what I need, and by the time
> I'm done what might I expect to pay?
>
> Just for info, the tranny has an overdrive, and the lock has been
> removed from 1st gear. (I never use it unless I have to park on the
> roof.)
>
> Here's what Mike just said:
>
> "I remember you saying you had the earlier spiral bevel gears and not
> the hypoid bevel of the later BN1 and all other big Healeys. I really
> don't know if the differential housings are interchangeable without
> other impact. I suggest you ask the Healey listers that question. I
> also wonder if there are some compatible vintage gears out there from
> other cars that might be acquired for less money. The Healey guys
> would probably know."
>
> This Healey addiction - will it never end? So I'm all ears, and thank
> anyone for responding.
>
> David C
> '54 BN1
> San Deigo
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