Quote:
Originally Posted by GORDON.M3
deansbimmer any idea if this works for our cars and should we be using it? 190°F thermostat apparently.
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These are Dodge truck/Viper thermostats but they'll fit our S65/S85 engines.
OEM coolant thermostat opens at 179f. The 880090 Motorrad is 190f. They also make 180f and 170f thermostats. We've used ones from Stant and Gates here at our shop as well.
Engine oil needs to reach at least 212f to be able to burn off condensates etc and if the engine/oil can't do so then your oil suffers. If your oil suffers, your engine suffers. If the oem coolant thermostat opens at 179 then the engine is taking longer to get the oil to that 212. If you replace the tstat to a 190 then you reduce that window and in a street car the engine can potentially get to temp faster. Generally, we might reduce the tstat temp for a track car, and raise it for a street car. The engine oil thermostat is also very clunky and we're working on a better solution for more accurate temperature maintenance.
Different setups and climates can dictate different needs. What works for Jeup in Michigan may be counter productive for us here in Texas. Jeup also does mostly S85 stuff- those M5 and M6 are SMG cars. Fine tuning takes some experimentation.