coolant to the throttle body

[JasonC]

I seen that there is coolant going to the throttle body. i disconected it and just made a loop for the two coolant lines to connect. it does not make any sence to have hot water going to the TB when you are trying to put cold air in it from a CAI. my firebird and grand national both had coolant going to the TB and i disconnected them too. Did anyone else disconnect there's? or did you guys leave it alone?

[JRowe]

By heating the air and throttle body, you improve driveability slightly and help the car get to ideal operating temperature more quickly in cold weather. You probably won't notice any difference one way or the other. While in theory it sounds like it could help performance, I've not heard of this being a performance benefit, but I could be wrong.

[nando]

it also keeps the throttle body from freezing in cold weather. I'd leave it alone unless you have a good reason to remove it..

[Mike 91 318ic]

I removed all that stuff a long time ago. If you don't live in a super cold climate then remove it. This way you won't have to worry about one of the small (dealer only) hoses rotting out and failing on you. As for performance I didn't notice anything.

M

[JasonC]

i dont know if it helped performance on this motor, but for my LT1 in my firebird the collant bypass kit they sell for it claims 4-6+hp improvment allthough i'm sure you can't tell if it did at such a low number. i'm going to leave it unhooked cause i don't want the air getting heated up going in my motor.

[pdx 528e]

i dont know if it helped performance on this motor, but for my LT1 in my firebird the collant bypass kit they sell for it claims 4-6+hp improvment allthough i'm sure you can't tell if it did at such a low number. i'm going to leave it unhooked cause i don't want the air getting heated up going in my motor.

By the time your engine is at operating temp, the heat transfer from the block and head will reach the TB via the manifold and provide as great of temperatures as that tiny coolant passage. The intake manifold is going to heat the air more than the throttle body, before it reaches the combustion chambers as well. The intake runner length is considerably longer than the length of the throttle body. I'd say its neglible on an M20.

Do you have access to a Raytek temp gun?

The other perspective: in a warm climate, I doubt that coolant line is really necessary. I'd agree with the idea that its a good thing to remove to reduce the amount of places for failure and leaks to occur. Does anyone know if you can plug the block and TStat housing rather than routing hose straight across?

[JasonC]

no, i wish i had a raytek temp gun it would come in handy with tuning my nitro r/c cars.