In a message dated 02/08/2000 5:43:43 PM Central Standard Time,
patbarber@home.com writes:
<< Does the piston I choose for the engine determine the
compression ratio (as it does on the 1500 engine) or does the cylinder block
/ Cylinder head combination determine the compression ratio? >>
The answer is "yes". (Ok, even my mother says I'm a smart-ass) Yes, a
higher compression piston (taller or domed) can give you higher compression.
And yes, modifications to the head can give you higher compression. You can
skim the head to decrease the CCs of the combustion chamber -- it's a ratio,
remember, between the CCs of space above the piston at BDC and the CCs of
space above the piston at TDC. So, any way you go at it (domed pistons,
skimmed head or both), reducing the number of CCs of space above the piston
at TDC will increase the compression ratio.
Just be careful with this. It's easy to overdo it.
Scott
Scottbarr8@aol.com
72 GT6 w/ 10.5:1 compression
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