Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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Re: 160* Thermostat Do i need a Performance Chip for it??
The stock programming requires the coolant temperature sensor to reach 176ºF for full closed loop operation. A 160º 'stat probably doesn't quite get the temperature it should.
Re: 160* Thermostat Do i need a Performance Chip for it??
There's no benefit to running a 160 degree stat. It sets the minimum temp, not the operating temp. It will just cause you to come out of closed loop more often. Run at least a 180.
Re: 160* Thermostat Do i need a Performance Chip for it??
A thermostat that cold won't do anything for performance. It will just make it drink fuel like an alcoholic that just won on the bar's VLT machines.
The stock 195* is a little warm IMO, but the 180* is the best choice, especially for a stock-ish engine. This is what the LT1 and LS1 came with from the factory. The engines were designed and set up with tolerances and components designed for an engine running in the 190-210* range. A 180* thermostat will put it right around the lower end of that range.
(**just a little side note, the 160*/180*/195* rating is only when the thermostat starts to open... it is not fully open untill about 10-12* above that rated temp.**)
Re: 160* Thermostat Do i need a Performance Chip for it??
Quote:
Originally Posted by Vader
The stock programming requires the coolant temperature sensor to reach 176ºF for full closed loop operation. A 160º 'stat probably doesn't quite get the temperature it should.
Vader, idk, but i watched my car go into closed loop at 161.2*. I waited and waited and thought for sure closed loop did not happen until 166*? Seems like they go into closed loop on a "timed" basis?
Re: 160* Thermostat Do i need a Performance Chip for it??
I tried a 160 in my tbi, but it drank gas, so I switched back to 180. I know you have a tpi, so take it for what it's worth. I also have my cooling fan hooked to a toggle switch so I can keep my coolant temp at 180, and not let it go to 225 degrees. I just reach under and flick the switch.
On the other hand, my carbed 305 seems to like the 160. Mileage didn't change, and I have better throttle response when warm. I have a fan switch for it also.
Re: 160* Thermostat Do i need a Performance Chip for it??
Quote:
Originally Posted by Stevolwevol
I tried a 160 in my tbi, but it drank gas, so I switched back to 180. I know you have a tpi, so take it for what it's worth. I also have my cooling fan hooked to a toggle switch so I can keep my coolant temp at 180, and not let it go to 225 degrees. I just reach under and flick the switch.
On the other hand, my carbed 305 seems to like the 160. Mileage didn't change, and I have better throttle response when warm. I have a fan switch for it also.
Re: 160* Thermostat Do i need a Performance Chip for it??
Quote:
Originally Posted by KITT1983
is motorad fail safe themermostat any good?
I don't know which is better. I just know mine doesn't stick... yet. I have heard of thermostats that are designed to stick open if they fail. I am skeptical. I just watch my gauges, and I will pull over before I fry the engine.
