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#1
10-17-2018, 12:45 PM
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18 ec300 compression ratio
Hi all,
Been having some troubles getting the jetting right since my cdi remap, the engine tends to detonate after periods of WOT, with racing idle. So checked the combustion chamber volume with a 50ml burette at tdc which measured 22.8 ml. Used a compression calculator and worked it out to be 13.85: 1. I'm thinking that this is too high, the squish is 1.9 at the edge tapering to 3.2 . What comp ratio are people using who have had head work done on the 18 300. Thanks Darren Last edited by taylor146; 10-17-2018 at 03:02 PM. 
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