if i install a TRD thermostat in a N/A engine will there be any benefits other than cooler engine. i know keep a cooler engine goes a long way when your boosted but will it have any effect on a N/A engine. for some reason just like the idea of a cooler engine thats why im asking.

 

NM, my original response pertained to the radiator cap, not the thermostat.

 

IIRC, the TRD Thermo opens up earlier than the OEM Thermo which allows for cooler engine coolant to flow.

 

i uderstand that, but any benefits of that???

 

my comment above was made just after nodsetse edited his post =P

 

Lowered fuel mileage, takes longer to warm up, poor heater functioning in cold weather, no performance benefits at all... go for it!

 

if he's constantly running the motor hard, it will help to keep the engine a little cooler. Will it be much of a performance benefit? Probably not

 

how does it lower gas mileage???

 

Your engine will take an exaggeratedly long time to warm up. Not a single internal combustion engine on earth is at peak efficiency until it is at operating temperature, the temperature that many hours of engineering determined would be optimal. Until it does, your ECU is programmed to run rich in order to warm up the engine. It doesn't know that it's fighting against a prematurely opened thermostat.

As you said, there are no benefits until you go F/I, where heat is generated much quicker.