IC core is 16 (or 18) x 6 x 3in thick. I moved the ports on both tanks to the front, so not the same as this old photo.



Current HX is an AFCO unit with dual fans mounted at an angle down between the frame rails ahead of the crossmember. Not sure this is the best location being so close to the track surface on a hot sunny day.
Might have more room up front if I lose the AC. They didn't leave much room there on the old AVs.

 

I like the discussion you guys are having here and that link was full of some pretty good info.

I'll throw in some of what I've seen with my truck to give you guys something to think about. While my goals and configuration are obviously a little different than they typical street driven A2W set up with a HX......I'll will offer this (cause it still blows my mind how this happens).

I run a Precision PT2000 A2W intercooler (very good cores) and a 6 gallon tank with a Rule2000 pump built in. The entire system was plumbed with -16 line. Total line length for the round trip was near 30 feet.

Before going to the lanes I could get a 20lb bag of ice in the tank and it would have just enough water to start flowing. I would not turn the pump on until I lit the top bulb. So the pump never ran during start up, burn out, back up, etc. After lighting the first bulb the pump would generally run for about 10 to 15 seconds until I let go of the trans brake. Data logs would show that the intercooler was not heat soaked from the burnout or anything as they would only be about 20* above ambient at the time I turned the pump on. By the time I left the starting line the IAT's where almost always near 10* below ambient temp. Through the run, IAT's would drop a few degrees for about the first 4 to 5 seconds then stay steady till the finish line. I always turned the pump off right after the run before I even turned off the track. So total pump run time was around 10 seconds at idle, 1 second on the transbrake then roughly 9 seconds for the pass and probably 2-3 seconds after I lifted for a total run time of around 20-25 seconds. I'd drive straight back to the pit (remember cooler pump off) and pull the lid off the ice tank in the back and there would not be one single cube left, but the water was still very cold (probably 40 degrees F or so).

I still can't wrap my head around melting 20 lbs of ice in essentially 9 seconds. My intercooler was in the cab so I don't imagine that it started killing the ice till I was full throttle. To me, the set up was perfect as I could make a run that would utilize all the ice and IAT's would never rise.

Just for fun one day we threw 20 lbs of ice on the ground during a hot summer day down here in Texas and it would still take a while to fully melt. Melting 20 lbs of ice in 9 seconds flowing through a -16 line just absolutely blows my mind.

 

A buddy of mine with a big tank does something similar. Instead of using all bagged ice. He would freeze several cylinders (coke can size) of ice over night in the freezer. Then he would drop those into the tank and top the rest off with bagged ice.

 

What I find is that the IAT in my lower intake climbs due to heat soak at low throttle positions. As soon as I have some decent flow through the IC the temp goes down. So I am always starting out from a higher IAT. Doesn't help having a lower intake that is a big chunk of aluminum.

 

Got everything installed but the pump isnt moving any water and it wont stay running when I key on. My Bosch used to. I will be testing the power signal tonight to see if it is fact getting a constant power source or if its dropping off.

I hope its the power stopping and it will work fine when the truck runs.

 

I got the pump and second HEX on but the results don't seem very good. As in it really didn't change much at all.

I'm going to try a cooling system flush for a little bit to see if i can clean everything out a little. Next step is to test fluid flow as well. I think I will disconnect my return hose to the tank and just let it spew out as I have a garden hose in the tank. Scientific, I know...

Beyond that I really cant think of a reason why it was working so horribly...

 

Sounds like you need to bleed the system.

 

Could very well be the case...

Not sure how to do that exactly I guess. I have a bleeder valve on the higher HEX that I got air our of. I also managed to work a little bit of air out of the feed line to the pump... the varimax is a pain in the *** about air in the line. But I know there is none left in there at this point. Still unsure what the problem is.

 

What is the highest point in the system, the intercooler? Easiest way is to pull vacuum on the system or simply turn it on and put the reservoir as the highest point.

 

The top of the reservoir is the high point.