I am just about done with my build and cant remember where these 4 coolant lines(circled in red) go, so please help. motor is a obd2 gsr with a skunk2 IM

1.this is the water neck where the upper radiator hose goes



2. this is under the throttle body



3. this is the iac valve behind the IM



4. under the IM

 

the left line under the throttle body runs to the closest line on the IACV and then the other line on the IACV should run to the rear coolant tube under the intake manifold i believe. the water neck in number one should run to the right side of the throttle body or you could just run it directly to the IACV in side which is the one closest to the throttle body.

atleast thats how everything is ran on my 90 b18a1

 

thanks^^ can anyone confirm that? i think yours might be different because im obd2. im pretty sure i only have one coolant line on the throttle body

 

it probably is different, im pretty sure that the coolant line on the TB is a one way port that feeds to the iacv. i could be wrong though

 

Thanks for the response! Anyone else????

 

Connect a hose from the first pic to the second pic.

The other L clip on the back of the TB goes to the IACV. Notice both are coolant lines on the IACV.

The one under the IM can be blocked off or T onto other coolant lines. Your choice.

 

Wouldn't the one under the I'M go to the iacv since there's two fitting on the iacv??? And you said that the one behind the throttle body goes to the iacv, does it matter which one I put it on because there's two?

 

No the one under the IM does not route to the IACV. The one behind the throttle body "If the IACV was installed in place" it would be the one closest to the passenger side.

There should also be a coolant line routing from your thermostat pipe that routes to the other port of the IACV.

Again you could either route the one under the IM to any coolant lines you want or simply plug it. It's not going to make a difference.