compression pressures

How Much Compression Should A V6 Have?

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How Much Compression Should A V6 Have? Healthy engines should have compression over 100 psi per cylinder, with no more than 10 percent variation between the highest and lowest readings. Is 120 PSI enough compression? You should start to worry if one of your cylinders is getting close to 100 psi. Most new engines in

What Is The Best Engine Compression Ratio?

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What Is The Best Engine Compression Ratio? Compression ratios usually range from 8:1 to 10:1. A higher compression ratio — say, from 12:1 to 14:1 — means higher combustion efficiency. Higher compression ratios and combustion efficiency mean more power with less fuel, and fewer exhaust gases. What is the most efficient compression ratio? Compression ratios