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lindemans lindemans is offline
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Join Date: Jul 2005
Location: Haarlem area, Netherlands
Posts: 212
Reducing compression ratio

Dear fellow Pelicans,

Another item I consider doing in my 1989 3.2 rebuild is reduce the compression ratio from 1:10.3 to 1:9.5. The fuel required for the high compression version engine becomes harder to obtain.

With 1:9.5 I should be able to run commonly used reguar fuel instead.

First I thought about swapping the pistons, but I calculated that an extra spacer of around 0.75 mm or 0.03 inch between the cylinder base and the case would also give this reduction in compression ratio.

Anyone experience or recommendations with doing this ?

Thanks again for thoughts !
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Old 05-27-2010, 02:52 PM
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