S2k_Bert

Hello all, i was planning on upgrading my rad to a full-blown radiator sometime in the near future, when i came to the thought, would this be too cool for street conditions? the car is mainly a daily, but i don't like it running warmer while on the track. but i don't wanna increase wear on everything by running too cool of temps on the street.

opinions anyone?

Mrsideways

You have a thermostat that controls the temperature of the Coolant, not the radiator. If the Radiator is cooling the coolant to much the thermostat closes and restricts the flow through the radiator. It's my opinion that you can never have to good of a radiator. It's running a good rad with no thermostat that gets you into trouble with the car running to cool. Don't know about the S2000 but My thermostat stuck opened on my truck and the gas mileage went to hell and it through code for running to rich.

S2k_Bert

i see..interesting so with a stock thermostat i should be fine? and what would happen if you were running an ems..would it notice the cooler temps and do the same thing?

turbo8765

The thermostat is purely mechanical. It has nothing to do with the ECU, stock or aftermarket.

Mrsideways

Correct but lack of thermostat function will cause the ECT (engine coolant temp sensor) see a temperature that will be used to tell the ecu what to determine the fuel mixture.

But yes we are over complicating this. If your using a stock thermostat the car will run exactly the same. Except maybe when the system is pushed hard the better radiator should keep it more in the operational temp range.

S2k_Bert

ok thanks guys