Hey guys im going with a forward facing kit and am no longer going to use the coolant lines to the turbo. Should i just take a hose and loop the coolant ports or use two seperate hoses and put a bolt in them or something like that?

 

Anyone not running coolant to the turbo?

 

On my car I have two turbos that I use for different types of racing. One is a FP 35R which has water ports, and the other is a TR30R which is oil cooled only. When I run the TR30R I just have a 6" piece of tubing I use to connect the two unused water ports.

Dave

 

just loop the port with a hose.

 

Don't loop the lines, it just gives the coolant an un-restricted path through the engine without using the radiator. Plug the lines.

There's only possibilities of long term effects running no coolant lines, short term shouldn't have any issues. Though if you're not, Id start running a turbo timer. If you're road racing I wouldn't get rid of the lines.

 

Please explain. Either the coolant is going thru the chra of a turbo that could be in the neighborhood of 500-1200+ deg f or it would be looped and bypass this entirely. That is like telling people who bypass the coolant on the tb that by doing so you are bypassing the radiator.

 

The turbo provides a bit of a flow restriction so its not just running full-bore. Also, bypassing the TB I wouldn't loop that either. If the system isn't being used it should be plumed as if the system isn't there. Would normally just add a loop in your cooling system for no reason on any other car? Of course not, let the coolant go through the radiator unless it needs to go through another system for cooling.

 

Oh, and to add you are bypassing the radiator with the coolant that goes through the TB and the Turbo. It comes from the Thermostat housing -- goes through what ever its cooling (or heating in the TB case) -- then re-enters the system after the radiator.

 

How doesnt it go through the radiator though if it goes in and out of the turvo anyway?

 

It re-enters the coolant system after the radiator. Not sure if Evo's have the same style crossover pipe that DSMs have (Though I don't see why it wouldn't, its still a 4g63), but the crossover pipe is what the lower radiator hose connects to then goes straight to the water pump.

The Heater, TB, and Turbo coolant line enter back into the crossover pipe and go straight to the water pump and back into the motor.

If the coolant went back in before the radiator there wouldn't be a great enough pressure difference to create flow and coolant would pretty much just sit.

 

Evos dont have the crossover pipe

 

Looking at an OEM parts diagram (JNZ tuning), its called an inlet pipe. Same thing though.

 

i have both the tb and turbo lines looped and i have had no ill effects and im down here in south tx where its hot as hell. The car actually seems to run cooler since all its cooling is the motor. And the TB coolant line is actually there to heat it up in the winter,all it does during the summer is heatsoak it.

 

I cant see it doing any harm if its already going through the hot turbo and returning as well

 

Its not about weather it works or not that way. These extra system all run in parallel to the Radiator. If you remove one of the systems, putting a closed loop in there is the wrong way to do it. Its just removing capacity from the cooling system as a whole. Yes the turbo does add heat to the coolant, but its also restricted flow and a necessity for durability. Not just running full bore with 15psi of pressure through a 1/2" line.

You can do it how ever you want, I'm just telling you the proper way is to make it like the removed system was never there and let the coolant system work.

You may never notice a difference on the street or drag racing but try hot lapping an autocross car (low airflow) doing 30min track sessions. That's when the reduced capacity can be felt.