Which fan thermostat temp is best? (Painless kit)
08-15-09, 03:36 AM
#26
i found a direct fit fan switch that will go in the choke sensor thread just below the thermostat it opens at 203f and closes at 194f i have a manual override switch should i need the fan to stay on longer ..... thoughts?
Mark
Mark
08-16-09, 11:57 PM
#28
That is very surprising. As oil temps rise, viscosity decreases. The lower viscosity usually means more HP. The NASCAR guys generally like to keep their oil well above 200 deg so they can make more HP.
Is it possible you're seeing the HP loss because everything else is heating up, too? If the IAT increases in tandem with the oil temps, it would probably be more of a factor than the oil viscosity and be the real cause for the power loss.
Is it possible you're seeing the HP loss because everything else is heating up, too? If the IAT increases in tandem with the oil temps, it would probably be more of a factor than the oil viscosity and be the real cause for the power loss.
08-17-09, 09:42 AM
#29
FB=OS Giken LSD
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Adjustible fan control +1. I just ordered one from Summit with my electrical fan. Your oil only reaches its rated viscosity at 212 degrees. I would get a good oil temperature gauge and adjust what oil you use and your water temperature until you can get a consistant reading of 212 degrees on your oil plus or minus 10 degrees.
08-17-09, 08:26 PM
#30
Adjustible fan control +1. I just ordered one from Summit with my electrical fan. Your oil only reaches its rated viscosity at 212 degrees. I would get a good oil temperature gauge and adjust what oil you use and your water temperature until you can get a consistant reading of 212 degrees on your oil plus or minus 10 degrees.
08-18-09, 11:16 AM
#31
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That's absurd advise... rotaries DO NOT like to run that hot. You must be new to this game. A correctly set up rotary will normally have the oil just cooler than the water temps. Right around 220* water temps things start breaking. Mazda recmoends immediate shut down at water temps of 220*... If youre oil is at 212 youre water is likely to be just above that. I like my oil temps at a safe 160* and water temps below 180*
If you want the rated viscosity of your oil, you run your oil at 212 degrees. If you want something else, do something else...
08-18-09, 05:06 PM
#32
What you have to remember is that a rotary rejects such a large proportion of its heat through the oil. That occurs mostly because the insides of the rotors are bathed in oil. When the oil runs hot, it's more likely to allow hot spots to form on the rotors, which can cause detonation.
Soo -- even though the oil might be comfortable at 212, your engine probably won't be -- especially if it's boosted.
Soo -- even though the oil might be comfortable at 212, your engine probably won't be -- especially if it's boosted.
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immanuel__7
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