In reply to a message from Norman LUTZ sent Sun 13 Apr 2014:
Norman Lutz said:-
SA denotes 9:1 CR. SB is 8:1 CR. The SB engines were for
the US and Canada Markets.<
That is not correct.
The first letter in the suffix denotes compression ratio.
Flat head engine:- S = 9:1, L = 7.8:1
HE engine:- S = 11.5:1, H = 12.5:1
The second letter in the suffix, A or B, denotes
bore/piston grade - differing by 0.001�.–
Roger Bywater / AJ6 Engineering
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