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Old 06-07-2009   #24
gbrtng
 
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Join Date: Feb 2006
Location: San Antonio area
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Default Re: Correct engine coolant temperature

Quote:
Originally Posted by USAFPILOT View Post
At what temp would damage to the engine occur? That seems to be more important than who's car runs the coolest and why?
Some years ago at an annual NCM ZR-1 Dave McLellan mentioned one of the prove-in tests was running 50 miles with a ruptured/cut coolant hose. He said the ECM goes into a limp-home mode where it cycles through alternate cylinders to keep the block temperature below meltdown but still provide some useable power. So there is some margin of safety above and beyond the factory thermostat and fan temperature settings.
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