[Healeys] Engine number

BJ8Healeys sbyers at ec.rr.com
Fri Oct 19 14:49:24 MDT 2018

Simon, I believe the U means a floor shift rather than a column shift.


Steve Byers


BJ8 Registry

AHCA Delegate at Large

Havelock, NC  



From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of
simon.lachlan at alexarevel.plus.com
Sent: Friday, October 19, 2018 6:21 AM
To: Healeys
Subject: [Healeys] Engine number


It is 29D/RU/H4908

29 = 3,000cc (+/-!)

D = MkI BT7 or BN7 (per Clausager)

R= Overdrive fitted

U = Centre shift (per BMC parts manual)


The BMC manual is quite specific. See attached. 

Who is wrong? Did 29D engines continue into later tricarbs which is when, as
I understand it, centre shifts appeared?

Or what?

I am considering buying an engine and rebuilding it. There's a block on eBay
with that number on its plate. I think it's a MkI and that RU stands for
overdrive and that U does not stand for centre shift.

Am I right?



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