Thread: compression ratio prob.
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07-24-2004 04:05 PM #1
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compression ratio prob.
im trying to figure out my compression ratio. i use dyno2000 but i dont believe the results i got were accurate. the specs i put in were 4.166 for the gasket bore size, .040 for the gasket thickness, the pistons have 4 valve reliefs on them that i've been told are worth about 4cc's, the chamber size is 72cc's. the deck has been milled to be equal with the top of the piston. is there anything else i need to know as far as calcuating the compression ratio?? dyno2000 said i had somewhere around 12.3 CR. im trying to find the easiest way possbile to calculate it. thanks for the help, i appreciate it.
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07-24-2004 05:04 PM #2
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what size engine do you have.
Last edited by junior; 07-24-2004 at 05:06 PM.
"IT'S 106 MILES TO CHICAGO , WE GOT A FULL TANK OF GAS , HALF A PACK OF CIGARETTES, ITS DARK, AND WERE WEARING SUNGLASSES"
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BRIAN
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07-24-2004 06:48 PM #3
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Here's another calculator at:
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http://www.campbellenterprises.com/R...o%20calculator
Don Shillady
Retired Scientist/teen rodderLast edited by Don Shillady; 07-24-2004 at 06:55 PM.
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You're welcome Mike, glad it worked out for you. Roger, it's taken a few years but my inventory of excess parts has shrunk a fair bit from 1 1/2 garage stalls to about an eight by eight space. ...
1968 Plymouth Valiant 1st Gen HEMI