Elec. fan controller

peteyturbo

New Member
Feb 2, 2007
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Philadelphia
Well, since my stock fan clutch is shot and I have no shroud, which makes my car want to run hot when it gets warmer out or driving for an extended period of time, I decided to just install a 2700cfm 14" electric fan kit with adj thermostat. I did not get the kit yet, but I am not sure if I want to run the thermostat the cames with the fan since the lowest temp setting for the fan to kick on is 180 degrees.. 180 seems borderline for me but I was also wondering what the stock thermostat opening temp was, also which direction the coolant actually flows..I have an autometer water temp gauge with a probe mounted on the upper rad hose, I am guessing that the flow of coolant on this hose goes to the rad and the lower hose brings the coolant into the engine since it is lower and should be cooler down there anyway. Can anyone clarify this?? Also what should be a good operating temp of the coolant measured at this location??I am toying with the idea of getting a different adj. thermostat (perma cool) for the fan to kick on at a lower temp, but I guess I will see how it works out once ups drops of my fan kit..Thanks in advance for any tips or info in advance..Other then that my car is now running great now that I installed another R154 and zip tied throttle linkage so I can go WOT without it sticking open, and with the 3 inch turb back..Feels like a low 14 to high 13 second car now and is running 8.5psi..
 

peteyturbo

New Member
Feb 2, 2007
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Philadelphia
If stock thermostat is 190 I should be golden with a fan kicking on at 180-190..I did not put the sensor in the tstat housing because autometer does not offer that thread pitch, I placed it right next to the tstat housing basically, so I should be good there as well..Thanks for the tips..
Nick M said:
Stock Toyota thermostat opens at 190, and so should you.

Why not measure the temp in the same spot Toyota does?

Here is your flow chart.
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=CO&Page=2
 

Nick M

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Sep 9, 2005
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Thermostat temperature ratings are minimum(opening) temps, not operating temps. Keep that in mind. You don't want a real cold engine. Mileage will suffer.

Post pics of the setup when you are done. :)
 

peteyturbo

New Member
Feb 2, 2007
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Philadelphia
I'll post up some pics for sure..Just wondering what the optimum operating temp for this car is..195 degrees seems to be the norm with alot of cars..
Nick M said:
Thermostat temperature ratings are minimum(opening) temps, not operating temps. Keep that in mind. You don't want a real cold engine. Mileage will suffer.

Post pics of the setup when you are done. :)