A 4.10:1 ratio would be incorrect for a BN1. That ratio was standard on the
Hypoid axle cars (BN2-BJ7) but the spiral bevel axles had a standard ratio of
4.125:1.
Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces at autox.team.net> on behalf of BJ8Healeys
<sbyers at ec.rr.com>
Sent: Monday, September 18, 2017 9:56:01 PM
To: 'Healey List'
Subject: Re: [Healeys] Axle Numbers
4638 is the rear axle serial number. I don't know if the prefix "BN1" (?) is
part of the serial number, but there is no such prefix for BJ8 rear axle serial
numbers. The 10/41 is the differential ratio (10 pinion teeth to 41 crown
wheel teeth. Usually written as ratio 41/10 = 4.1
Steve Byers
HBJ8L/36666
BJ8 Registry
AHCA Delegate at Large
Havelock, NC
From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Michael
MacLean
Sent: Monday, September 18, 2017 2:08 PM
To: Healey List
Subject: [Healeys] Axle Numbers
Can someone decipher these numbers I found on the axle?
[cid:image003.jpg at 01D330A7.21223D00]
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