Increased compression equals more horsepower.
The only thing to watch out for is whether your cylinder head has been
excessively milled over the years. During a valve job, the machine shop
always mills the head flat and some owners specify taking off more material
to raise the compression ratio. When real 100-octane gas was available, that
was an acceptable way to get more power out of an engine.
Now, 9 to 1 compression (about 160 ft.lbs. cranking with the throttle held
open) is about as high as you should go with 92-octane gas. If your engine
is significantly lower than that, fitting high compression pistons will
definitely help the engine make more power.
Lawrie
British Sportscar Center
-----Original Message-----
From: Chris Chandler <spawn@net-link.net>
To: MG List <mgs@autox.team.net>
Date: Wednesday, December 16, 1998 8:27 PM
Subject: Re: HC vs. LC
>Lawrie Alexander wrote:
>>
>> When I rebuilt the engine for my '77, using HC pistons, the results were
so
>
>
>What's the tradeoff to going to HC pistons from regular? Is there any?
>I'm about to buy pistons and I'm not sure which would be better suited
>for me.
>
>Thanks!
>--
>Chris Chandler
>'72 B Roadster "The Red Baron"
>'70 B Roadster "The Ghost"
>
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