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General Minitrail Talk
Modifications
Piston mods or thicker head gasket?
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<blockquote data-quote="Old Guy Too Many Bikes" data-source="post: 201528" data-attributes="member: 15440"><p>You could get a piece of sheet steel, use a base gasket as a template and make a spacer. If you're clever enough, you can calculate your desired compression ratio and pick a correct thickness to suit. Volume of a cylinder is pi x R(squared) x H. R=bore/2, H=stroke. If you can figure out combustion chamber volume (using liquid), and volume of your piston dome, it's quite simple actually. Cylinder volume + combustion chamber volume + cylinder deck height volume / combustion chamber volume + deck height volume = compression ratio.</p></blockquote><p></p>
[QUOTE="Old Guy Too Many Bikes, post: 201528, member: 15440"] You could get a piece of sheet steel, use a base gasket as a template and make a spacer. If you're clever enough, you can calculate your desired compression ratio and pick a correct thickness to suit. Volume of a cylinder is pi x R(squared) x H. R=bore/2, H=stroke. If you can figure out combustion chamber volume (using liquid), and volume of your piston dome, it's quite simple actually. Cylinder volume + combustion chamber volume + cylinder deck height volume / combustion chamber volume + deck height volume = compression ratio. [/QUOTE]
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General Minitrail Talk
Modifications
Piston mods or thicker head gasket?
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