Lowering Engine temperature
 

I'm looking for input. I know with water cooled engines, sometimes removing the thermostat,or reducing the thermostat operating temp lowers overall engine temperature. (No heat in winter) I want to do that with my 993. Does anyone have any experience with that. I have tried to buy lower temp thermostats, but they don't make them, according to everyone. I have purchased for my Jeep lower thermostats. Heat kills. I did it with an Opel , and feel strongly that the extra 100,000 miles I got on the car directly related to the lower engine temps, and still got 30 mpg.

You DO realize that it's air cooled!!?? There is no thermostat.

The best way to lower the engine temp is to remove the undertray.

There is a temp control valve for oil circulation to the front radiator as part of the oil tank.

Oil/coolant temp is not engine temp, but fluid temp. Oil is designed to run at a temp range. If you succeed in lowering temp, then oil lubrication may be effected.

Drop trays and air cooling is improved.

There is a thermostat, but it's for oil temperature, signals when to send oil to the front oil cooler.

There are actually 2 t-stats
1 for the oil is located in the oil filter console beneath the oil tank, #16 and the other is for the fan in the right front wheel well that moves air through the cooler.
http://forums.pelicanparts.com/uploa...1530450464.jpg

The t-stat operating temp is determined by a phase change of a wax like material, I'd need to look it up but it's ~180F. There are no options here.

Stock the oil coolers work fine for most street use. If the temps get uncomfortably high
http://forums.pelicanparts.com/uploa...1530450752.jpg
say ~248F, you add another oil cooler in the left front wheel well.

you can get a lower temp fan switch to turn the cooling fans on earlier (or jumper ir to run when the car is on). You want the oil temperature above a certain temperature before sending it to the front cooler or you risk blowing out the oil cooler with too much pressure from thick oil.

thanks,

john