I have the opposite situation - A 1500 head on an 1800 blockin my MGA.
Compression pressure is just fine (144), but I seem to have quite a bit of power
(compared to my stock 1800 MGB). I should have probably put in bigger valves,
but
I'm getting 30 mpg, and running great this way.
Phil Bates
WSpohn4@aol.com wrote:
> In a message dated 8/30/00 11:44:11 PM Pacific Daylight Time,
> owner-mgs-digest@autox.team.net writes:
>
> > One such statement IN THE CATALOG (at least in a sales flyer)
> > that used to bother me about a dozen years ago was the assertion that the
> > early MGB cylinder head could be considered to be a performance upgrade for
> > the MGA. Yes the 18 head has larger valves, but it also has a larger
> > combustion chamber that will lower the compression ratio considerably.
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