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#26 | ||||||||||||
Registered User
Join Date: May 2008
Location: Mesa, AZ
Posts: 281
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Re: 250 inline running hot at highway speed
Is it just my imagination, or has this thread gone from the realm of likely causes of the OP's problem, into the realm of insanity?
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Well, think about it for a moment. Thermostats are designed to open at a certain temperature. 160F, 185F, 190F, 195F, and so on. If the coolant leaving the engine is over 200F, here's what we can surmise. The 160F thermostat is fully open. The 185F thermostat is fully open. The 190F thermostat is fully open, and so on and so forth. There is no real value in installing a cooler thermostat, or removing the thermostat! The argument is often made that the thermostat restricts flow, therefore, removing it will increase flow, and bring the temps down. This logic is flawed in a HUGE way! This logic assumes the thermostat is the cause of the restriction! Perhaps in some high HP engine, this might be the case. But I suspect the OP has a near stock setup. In which case, the odds are great something is broken. Be it a clogged radiator, clogged engine cooling passage, or a bad pump. Perhaps a collapsed hose. The lower radiator hose has a spring in it to keep it from collapsing. Perhaps it rusted out. A temporary fix will not solve the problem if the problem is poor coolant flow.
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