IC lines into heatercore (AC)

[Syclone2882]

tell me if I am wrong I have that our ac compressor automaticly shuts off under wide open throttle. Cna anyone tell me if this is true? I have the setup on mine and I have yet to charge the ac if only has 600 miles on and I was just check to find out if the compressor does shut off under wide open throttle?

 

[Christian Dionne]

Yes, the AC compressor is supposed to be shut off by the ECM past a certain TPS%.

You don't need to run the air conditioning on the track. You only use it to cool off the system, not to use under boost. I have accidently ran it down the 1/4 a few times, and the only thing it affected was my voltage at WOT.

 

[jwaller]

yes the ac will shutoff above 84% tps or above 239 deg engine temp or above 4400 rpms.

 

[InvisiBill]

From my flow diagram, unless there is some magic, the air flows from the blower, through or around the heater core first, and then to the a/c evaporator. so, unless you can route the air again through the heater core, this won't work too effectively... In My Professional Opinion....

Yes, having the air flow from the AC evaporator to the IC-heatercore would be the most efficient, but you're still sticking the IC "heat exchanger" into the cold air in the cab.

I guess I like the idea of using the heat method as I could use it with the truck off. I run my heat the engine temp goes down.

By running the AC compressor - you are still going to increase engine temps - BUT if it isn't cold AC - that theory might not hold true. But you have to have the truck running for this to happen which isn't going to allow it to cool down.

Yes, running the AC will add heat to the coolant, and will cause parasitic loss. But like a supercharger, the gains far outweigh the losses.

Using just the heater should be similar to a stock setup, though you might be avoiding some engine bay heat. The AC just makes the air passing through the heatercore even colder, so it cools even more. You could just run the heater with the truck off, and it should help. It'd be like having your stock setup with Jabsco and Spals running. Just passing ambient air through a radiator to cool the IC liquid...

Us warm weather folks have nothing to lose, and everything to gain by using my setup.

Us cold weather folks will just have to make sure we stay in the boost enough to dump enough heat into the IC to heat up the cab. =)

 

[Ian Turgeon]

"In any air conditioning mode, the heater core can be used to heat the cool dehmidified air to achieve the desired temperature. The position of the control assembly temperature lever will determine how much heat will be added to the incoming air"

thats the best I could do from opie's cd. Its quite unclear exactly where air goes, but atleast that does point out that it mixes. Agreed, that whatever arguement there is, it definately IS cooling the heater core when ac is on and in htr position.

 

[Daron]

Sorry folks, but real world results have proven my setup works.

My IC would be cold to the touch with water temps in the 60s, just 5 minutes after a 1/4 mile pass. It used to amaze the shit out of people at the track.

Ian, Adam, Mike and several other FAST members will vouge for me.

Once again, I had no fans, no coolers, no scoop.

Us warm weather folks have nothing to lose, and everything to gain by using my setup.

"Your" setup has been tried time and again for years with varying results. I have found that some aftermarket replacement heater cores dont flow well, so beware if your heater core is not original.
Rick out in Cali has been using this technique with success, 12.2's, stock turbo....
I used it for a time, cooled the IC ok, but by the end of a run MAT temps would be near previous highs, so once winter came, I went back to conventional CCHE routing.

 

[Syclone2882]

Currently my set is routed as follows it comes out of the Upper Intercooler box and then goes down to dequick CCHE with spal fans on the back and then through the fender into the heater core and then out of the heater core back into the Upper Intercooler. IS this how most ofr you guys are doing it or are you just using the Heater core and not the cche? It is hard to figure out what some of you are doing but would this way work the best?

:microwav:

 

[Typhoon #1133]

mine is set up just like you did yours. the cold water from the heatercore goes right into the uppper intercooler, that is the bottom hose on the upper intercooler.

 

[dgoodhue]

"In any air conditioning mode, the heater core can be used to heat the cool dehmidified air to achieve the desired temperature. The position of the control assembly temperature lever will determine how much heat will be added to the incoming air"

thats the best I could do from opie's cd. Its quite unclear exactly where air goes, but atleast that does point out that it mixes. Agreed, that whatever arguement there is, it definately IS cooling the heater core when ac is on and in htr position.

I looked over my parts syclone A/C ducting. Their is a door between the A/C evaporator and Heater Core. When on cold, the door blocks the passage between the heater core and A/C evaporator core. When on hot this duct is open (it block the A/C from entering the heating ducts) and would allow the heater core to be cooled by the A/C evaporator core.