Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Engine running too cool...totally baffled!
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Old 01-05-2008, 08:20 AM
barnym17 barnym17 is offline
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210 to 215 is best for your engines health.Not always best power but best longevity.The reason for this is higher thermal efficiency, also the moisture created as a by product of combustion is steam at these temps and easily removed by the pcv system. Also oil should be ran at least at 220 degrees but less than 300 for best life and power due to friction and thermal losses at lower temps.The reason most engines have seemingly less power at higher temps such as these is because the under hood temp will normally match coolant temp give or take a few degrees and hotter under hood air is less dense cutting power somewhat. The rule seems to be for every 10 degree drop in air intake temp adds 1% in power.The best deal is 210 coolant, 240 oil, and as cold as possible intake temp.I.e scoop, cold air induction etc.
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