i have the stock and cx h/e it takes me 1 whole gallon of coolant. if that isnt enough then i dunnno... and yes i believe running both will net lower temps.... it gets cooled from stock h/e then moves and cooled in the cx front mount then to the manifold.. why does everybody think its better to run 1??? just the science behind it doesnt add up. more coolant Heat is transferred from the hot tubes and fins to the cool outside air. the more the betterThe first equation describes the overall heat transfer that occurs.
Q = U x A x DTlm


Q is the amount of energy that is transferred.

U is called the heat transfer coefficient. It is a measure of how well the exchanger transfers heat. The bigger the number, the better the transfer.

A is the heat transfer area, or the surface area of the intercooler tubes and fins that is exposed to the outside air.

DTlm is called the log mean temperature difference. It is an indication of the "driving
force", or the overall average difference in temperature between the hot and cold fluids.

i rest my case

 

Well, i know that air gets to it, but the stock HE core is relatively small, and sandwiched between the AC condenser, which seems absurdly big, and the radiator. I know the radiator cools the engine, but it only keeps the fuid between 180 and 220, so thats not exactly helping if you consider the proximity of the H/E, and you want the intercoolant much lower than that. Now, a single pass, with a big H/E, by itself way our front, in the immediate flow of cool air coming into the front of the car, will rapidly cool everything down much better in my opinion. I think the brothers OTT tested this out extensivly and found a single H/E mounted out front works best.

Thats just my opinion.
Where did you get the equation, and btw, its useless unless you put numbers in it.

 

yea i know its useless but i dont have any numbers and it made me feel smart....lol i found it here

http://www.gnttype.org/techarea/turbo/intercooler.html

 

Haha, not that it really makes a difference, but thats for turbo's. You have to take into account the liquid coolant is 25 times more efficient than air is. air to liquid has the potential to produce incredibly better results that air to air.

 

....kind of
friendly debate of the topic before i head to bed?
guess not.. lol
time for bed for me

 

This is exactly what I was going to do when I got my second heat exchanger, use the less effiecient heat exchanger first then go to through the more efficient heat exchanger for better heat exchange. But there are things that I was thinking about that might make me not want to do it.

Your theory more fluid the better isn't always the best way to go. When heat is transferred to the liquid when there is more, the temps will be lower because more fluid for the heat to exchange to. But when there is more fluid and the water gets up to high temperatures is the recovery rate worth the extra time for the fluid to drop back down to reach the desired IAT's? Something I alway think about when mod's come out adding extra water/fluid to systems. Can both heat exchangers handle the extra liquid efficiently to drop the IAT's down to what the one, more efficient heat exchanger, can do?

 

IIRC......LSJwannabe from OTT used to run the stock h/e and a secondary Front mount h/e. It is the way I plan to run.

 

Actually.. LSJwannabe did a test, and he ran just a single, larger unit compared to stock + another unit...

he saw lower temps with just the aftermarket intercooler.

 

Sounds like someone is a first year mechanical engineering student!

 

I just ordered this one on Ebay and I hope it helps cool those temps. down. It can get really bad here in Texas during the summer.

 

am i the only one that already knew that you were supposed to run the aftermarket one inline with the factory one.... or what?

this is common sense to run both of them hahah.

 

I rather run a single with a bigger coolant tank.

I'm running a single ZZP unit up front right now, and soon plan on getting a bigger tank.

 

I have that one. It works well for me

 

I have that one as well along with a How-to in my sig if you need it. LSJWannabe and Hungryhip both tested out both setups and both concluded that ONE larger unit yields better cooling numbers than running both. If someone disagrees with the idea then run the test yourself and let us know the results.

 

more coolant is obviously going to help, why do you think some of us are just running larger coolant tanks?

 

I'm not saying adding more coolant is a bad thing. I run a larger tank as well, but the position of the stock H/E makes a difference in cooling.

 

well then why not just put 4 more tanks behind the rear bumper and under the car and one in the trunk. that should add some coolant for ya... hahahah

 

i actually wouldnt mind having a one gallon cell in the trunk.

 

I thought about doing that as well. Would there be any issues with it? Our systems are free flow right?

 

im no expert on the pumps and what not so i dont know if there would be any more stress on them. the other problem would be having to tap a hole in your trunk to allow both a send and return coolant line.

 

wouldn't you have to do that for a trunk mount meth kit anyway??? so why not do it again for coolant. or nitrous...

man....my trunk is gonna be cluttered this season hahahah

 

because coolant lines are way bigger for one. again, i dont know about the stress on the pump. i literally have no idea on even if it would matter.

 

yeah but still. you could just get a rubber gromet with an inside diameter the same as the outside diameter of the line, and just cut the whole so the grommet will fit. and it should be pretty good. but yeah, the pump is a whole different story

 

still, some people may not want to drill to inch wide holes in there trunk

 

then they shouldn't be complaining about IATs and a simple h/e-dual pass-opt b setup should suit them fine hahah