That's a pretty tiny increment to achieve via new pistons. I would think a
thinner steel head gasket could get you that much, or a light skim off the
deck. I'd look out -- just the normal head surface clean-up might do this
already.
Domed pistons usually bump you up a whole number ratio, or more, though I
have no idea what is available for B motors.
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
on 5/30/06 3:39 PM, Phil Bates at jello@ida.net wrote:
> My 3 main MGB 1800 motor overheated badly last summer due to a lost water
> pump seal. I'm going to need a rebuild probably this upcoming winter (the
> car is drivable, but has low compression). Has anyone tried getting
> higher compression pistons for their engine?? I see stock 3 main B motors
> are 8.75:1. I was thinking about bumping it just to 9:1 for the extra
> oomph. Anyone done that or have suggestions.
>
> Phil Bates
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