Information from Neil Cairns I believe.
After 1970 the system was again changed, and simple types were just
85 848cc 99 998cc 10 1098cc 12 1275cc
16 1622cc 18 1798cc 22 2200cc
with either a 'V' or an 'H' after it. 16V meant vertical,( in-line), as
the Sherpa van, or 18V as in both the later Sherpa and MGB, and Morris
Marina 1800. 12V would be in an Ital, and 12H in Metro, H meaning
(FWD.) It was the group of numbers/letters after that denoted the
ie, 18V-584F for a UK specification engine on the MGB.
Sprite Mk4/ MG Midget Mk3 1275cc 12CC or 12CE home market
.. .. 12CD or 12CJ N. America
.. .. after Oct '72, 12V/586F/H
.. .. 12V/671Z/L N. America
** 18V was followed with a code for the market, such as if a 'Y' appears
the prefix, it is a Europe spec car; if a 'F' a UK spec car; if a 'Z' a
north America spec car. An 'AE' after 1975 is a car with a catylist
for California. The emmission controls, timing changes, etc, require a
shop manual to identify the huge numbers of changes.
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