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How To Work Out Compression Ratio


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#1 PhilipGCaldwell

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Posted 07 September 2010 - 11:27 AM

Hi, rebuild a 998cc engine, putting on a 12g940 cylinder head, block pocketed and head ported out and polished
How do i work out the CR? what CR should I be looking for with this engine mod?guna also be installing a Kent 276
Ta

#2 Wil_h

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Posted 07 September 2010 - 11:34 AM

Click here

#3 PhilipGCaldwell

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Posted 07 September 2010 - 11:40 AM

haha, thanks WilH

#4 ANON

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Posted 07 September 2010 - 04:05 PM

there used to be decent cr calc on the ferriday site, dont know if it's still there though?

#5 Gaffer

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Posted 07 September 2010 - 04:25 PM

might be barking up the wrong tree here but there is an iPhone app called 'minihead' that does some sort of calculations. Dont know whether non iphone users can run it on their PC via an iphone/ipod emulator?




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