At your boost level you shouldnt see IATS that bad. **** at 15psi on a 50deg day my cruise iat will be 62, heatsoaked and not moving it would be 80. If I made a wide open pull weather starting from cruise or heatsoaked it would peak at 98ish. Mine climbs 20-22 deg like clockwork and peaks at 97mph and then stays flat.

Dual meth nozzles 1x10 and 1x4
Dual heat exchangers, lingenfelter Verimax pump.

 

So between coolant tank through your intercooler that temp is the same?

 

That data supports your heat exchanger not doing jack...where do you have it mounted? In direct airflow or behind the bumper or something?

If the HEX is 100% efficient the coolant leaving will be the same temperature as the ambient air. Most decent ones are 60-70%, which means 60-70% of the way back to ambient. So if your HEX inlet is 200F and the ambient is 70F, then a 70% HEX should have an outlet temp of 200-(200-70)*.7=109F.

 

I will post some actual data this evening as I don't have my tuning laptop with me, but basically the coolant will gain 3-4* thru the IC and will drop 2-3* thru the HE while cruising. HE Out and res temps are withing a few degrees. Under boost the delta thru IC is higher but delayed untill after the run but HE delta remains the same.

Yep, pretty much. HE is right in front below the hood latch. The thicker center bar of the HD grill shrouds the lower half of the HE but ~4-5" away from it.

 

That's not much heat removal from
The boosted air temp. Must not be much temp difference in water and boosted air.
I would not even mess with a performance hx. Dual pass bla.
Find a radiator that can go in the front end.
I would turn onevwith tanks on the ends so you have a top and bottom tank.
Could easily fit 22 tall 18-20 wide I believe.

 

I would argue the ability for the intercooler to remove heat from the airflow quickly enough is going to be your issue during races. The larger HEX will help bring down the overall coolant level closer to ambient, but this is a much slower process than the intercooler absorbing heat from 10 second bursts. The HEX is going to help recovery times but not peak race temperatures very much.

 

What i was getting at as well.
The intercooler is not pulling much heat. The only way to make the same size IC remove more heat at a given time line. Is to make that core colder. There must be a large temp difference boost air temp to water temp. The closer those numbers get the worse the thermal transfer will happen. So if the HX is not doing its job the water temp will get higher and higher and higher until the is true balance. which sucks for power.
The larger HX should stop the overall water temp rise over long periods of time.
Inter coolers need water to haul *** through them to keep that core as cold as possible. But the HX needs the water to go through much slower to allow the air to remove that same amount of heat. Going to a larger HX is roughly the same thing as leaving that water in that part longer. Allowing it to pull what ever heat the inter cooler absorbed away.

Off my 03 truck I could fit a 24 x 24 2.5" HX in the front end.

 

If the intercooler sucks at transferring the heat between the air and the water, then it doesnt really matter how fast you move water through it since the water wont be absorbing any of that heat. The temperature does matter somewhat, but because the efficiency of the intercooler is so terrible, all cold water does is make the heat rise start at a lower temperature (assuming its cold soaked) and wont do anything to slow the rise in temperature during a run. An expensive but better intercooler would be made entirely of copper which has a thermal conductivity about twice that of aluminum.

The HEX doesnt necessarily need water to move slower, it just needs the hex to be able to shed the heat. Going to a larger HEX isnt effective because it makes the fluid slower, it works because it is larger and is able to transfer more heat to the environment in the same amount of time. You could also do something crazy like have CO2 spray bars spray on the heat exchanger during boost time to lower the ambient temp and make the HEX more effective. Big boost diesel guys used to do that back in the day.

 

I'm sure it's in the thread somewhere, but what direction do you have your lines going starting from the reservoir?

 

The amount you need to spray to make any difference.
Might put a 25lbs bottle in the truck and run wide open.
And still won't see any real track time bump.

Building cores for the lightnings have shown me a lot needed to get boosted air temps to a controllable level.

End of the day it's all a bandaid for a thin intercooler.
Be nice if someone offered a race intercooler for blower guys.
But it's not cost effective if the market doesn't support it.