Can anyone tell me if 6.5:1 is a safe corrected comp ratio.
I recently measured the Avanti head I have fitted to my RB225 and found it had combustion chamber volume of only 19cc. Trapped head volume was 20.5cc which gave uncorrected 12:1 and corrected 7:1.
I've removed a bit of material and I'm now at 6.5:1 corrected.
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Corrected compression ratio
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Corrected compression ratio
by Simon ELC » Tue Oct 18, 2016 8:41 pm
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Re: Corrected compression ratio
by Warkton Tornado No.1 » Tue Oct 18, 2016 10:46 pm
By my reckoning, your geometric compression ratio is 11.14:1.
IMHO the maximum should be 10:1.
Others may disagree, though....
IMHO the maximum should be 10:1.
Others may disagree, though....
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Re: Corrected compression ratio
by Simon ELC » Fri Oct 21, 2016 9:42 pm
Spot on WT1
I took another cc out to get to 10:1 and 6:1
I took another cc out to get to 10:1 and 6:1
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