RE: 1972 gt750 cylinder head machining

Suzuki GT 750 discussion forum:


RE: 1972 gt750 cylinder head machining

RE: 1972 gt750 cylinder head machining 
jj said 2009-07-31 22:56 
 
Milling off 1mm is not a problem. Compression pressure and compression ratio are not the same thing. Compression ratio is the complete volume of the cylinder, head combustion chamber, gasket thickness ( area) etc. at bottom dead center divided by the volume it is compressed into at top dead center. This is called full swept volume and is how a 4 cycle engine is computed. The GT750 is a 2 cycle therefore actual compression doesn´t start until the exhaust port is closed thus lowering the \ 
 
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