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Is mine a GA or GB lump?

To: <MGS@autox.team.net>
Subject: Is mine a GA or GB lump?
From: "Colin Brown" <ccbrown@cwcom.net>
Date: Sat, 9 Sep 2000 22:41:32 +0100
My  Mk2 B Roadster, was first registered in the UK in April '67  the
documentation shows, with engine No 18 GARUH 7276  ( 3bearing,O/D &
High compression head).
That information surprised me, I would have expected a GB engine to be
fitted  in'67.

It was heavily and very professionally restored & Heritage reshelled
in 1991 by the PO, when the lump and trannie were refurbished or
perhaps even replaced .( all to very good effect because I have since
thrashed it for a further 16K incident free miles )
Along with the O/D I now have a 4 synchro gear box  with side fill ( a
later version than would have been fitted in '67 I think?) and a
cylinder head with vertical indents above each plug (  the thicker
walled improved head design) but as  my block has no plate or engine
number stamping, I do not know if I am running a 3 or 5 bearing lump.
Are there  any other external distinguishing features between the GA
and GB engines, sump shape perhaps?
Would welcome advice from the experts.
Cheers
Colin.



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