----- Original Message -----
From: Bill Kelly <bk54@erols.com>
> OK, but what about the GA...HE series, such as GA41811HE. Is that just a
> marketing gimmick, or were some pre-'64 engines higher than 8.0:1, or
> were there engines without the HE suffix having even lower CRs?
Hi Bill,
8.0:1 was considered (in relative terms) the High compression Engine and
this is what the HE suffix refers to - the later 8.5:1 engine used the same
suffix. Other markets where poorer quality fuel was expected to be used were
supplied with an LE suffix Low compression Engine, on the 1147 this was 6.8:1.
Confusingly, some (earlier) engines simply had an E suffix - those I have seen
were all High Compression units, but don't assume that to be definitive.
Cheers,
Bill.
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