compresstion ratio
12 February 2007, 11:12 PM
#1
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compresstion ratio
i have an auto sportiff 2.2 stroker kit and in the process of rebuilding but thinking of lowering the comp but need to work out the ratio as the components stand athe the mo any one got any advice on how to work this out and what the ideal comp ratio i should be aiming for is
14 February 2007, 04:57 PM
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Things you need to no in order to work your compression ratio are.
Cylinder head volume in cc
Head gasket thickness (Crushed)
Deck height
Piston dish in cc
Bore size diameter
Stroke
Combustion chamber size in cc
Cylinder head volume in cc
Head gasket thickness (Crushed)
Deck height
Piston dish in cc
Bore size diameter
Stroke
Combustion chamber size in cc
Last edited by Slowboy Racing; 14 February 2007 at 05:15 PM. Reason: Adding the cc's
14 February 2007, 05:08 PM
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Begs the question why do you want to change the CR is there a problem with the motor?
The “Ideal” compression ratio would be around 8.5.1 for most applications.
Once you have the figures you can search google for an online calculator to work out the maths for you
The “Ideal” compression ratio would be around 8.5.1 for most applications.
Once you have the figures you can search google for an online calculator to work out the maths for you
23 February 2007, 10:19 AM
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basicallyi'm rebuilding the lump so heads need to be skimmed and was thinking of dropping the cr for more protection when running high boost and making the engine that bit safer o the det side
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