Actually.. wrong...

If your just going to run it through the stock HE first, then theres no point in having it.. considering it is now not getting any fresh air (just a whole bunch of hot air) and it isnt getting ANY direct flow, what so ever... so its actually keeping your coolant hotter...

PM lsjwannabe, he actually tested this out.

 

so like i was saying just run the aftermarket h.e since it will be on the bottom like an turbo intercooler and get WAY MORE AIR AND COOLER AIR INTO IT?

 

Absolutly right...

 

thats what i did!!! 2 ftm*w!!

 

thats what i did!!! 2 ftm*w!!

 

Please don't turn this thread into the "1 vs 2 H/Es" lol. Back onto topic. the IAT1 is the ambient temp right?

 

yes.

Well.. technically air temp before supercharger...

 

you can only argue this point if you can show the air thats hitting the stock HE is hotter than the coolant flowing through it. This would vary based on different speeds as well, so theres reallyno set answer, but i really dont think the aftermarket HE will heat the air so much that the coolant in the laminovas is actually colder than the air unless you're just idling or going 5mph. I'd say anything over 10mph should be creating enough airflow to have a cooler air temp at the factory HE than the coolant inside it.
Before you say it, im well aware of lsjwannabe's test results.

 

its not the aftermarket he making the heat.

Its now that the only air the stock h/e is seeing is air thats coming off of a very hot engine.

And that hot air keeps the stock h/e warm itself.

 

^^ it's no different than a stock setup though. To argue that the stock HE doesnt perform any cooling due to its location would be to say that even a stock SS shouldnt have come equipped with the HE and it should just be an un-intercooled setup, which we both know isn't the case.

 

how does that have anything to do with it...

and yes it is diffferent that a stock setup.. you added an extra HE.. so its no longer stock, and now its different.

Im sayin the stock he doesnt do anything in the location its in because now theres no cool air flowing to it due to the aftermarket HE.

 

and im saying this definitely is not the case. Lets say ambient air temps are 70* out. After the air has passed the new HE, the air is 75*, and then it reaches the stock HE.

If you were going faster, then the air might only heat up to 72*. Regardless, this 72* air will still be cooler than the stock HE will e, so it will still be cooling the unit. Just because the air has passed through the new HE does not mean that it is now 120* air that is unsuitable to cool anything else off, or else our radiators wouldt work at all because theyre also behind the HE system...Hell, theyre behind BOTH HE's too..
I realize the radiator is a lot hotter than the HE will get, but the same principles apply.

 

agreed the temp wouldnt be like 10,000*..

But what is the temp of the stock HE now? Alot higher than normal. but that air wont stay at "72*" because there is now hot air trapped which is warming the air more...

If the stock h/e got the same amount of flow as the aftermarket, it would be a different story.. but near non of that air is moving now, deffinatly not at the same pace as it was before.

 

the speed will be slowed, but not much. Go outside, run your AC and the recirculation so the cooling fan turns on. Stick your hand in front of the radiator and then stick it behind the radiator. You will feel a difference, but not a big one...and that fan is probably only the equivalent to cruising around 10mph. The air doesnt get trapped either. It leaves the same way it did before you put an aftermarket HE on

 

tr00f. when im in traffic, i see an IMMEDIATE drop in IAT2s when i kick on the cooling fans with the ac. within seconds it drops from 140+ to 130 or less. i can feel the air moving even through my front mount h/e.

 

so ft the temp outside is 75* and driving in traffic my iat2 temps are 130-150 is that bad or normal? when i get going it drops to 130-140

 

my iats' are usually like 6-10* above ambient.

/beingadick because my blower runs alot colder then yours lol

 

This is way too high. IAT2 should drop to about 20-30 over IAT1 pretty quick once you start moving.

What I have found from messing with timing and IAT2s is that:
1) of course the cooler the air the more timing you can run.
2) about 130F you really have to start retarding the timing alot due to knock on a fairly aggressive tune
3) your AFR also plays a big part as to how much knock you get at different IAT2s

 

I hate threads like this. There are so many different variables that effect IAT2s that it is retarded to compare one car to another. IAT2 temps are thrown around this forum way too often with little understand of what they actually mean.

This thread is a great example of it.

There are guys posting numbers from SCs, Turbos, Meth, Dual Pass, additional cooling mods, etc.

Unless you have the exact same setup and all environmental variables are the same (Ambient air temp, humidity, elevation, engine run time, tune AFR, tune timing) it does not mean anything from one car to another.

I think E85 is the best cooling mod to run on a SC'd engine. But E85 does not produce as low of IAT2s as say Meth injection. Does that make meth injection better? Hell no!!!

IAT2s are measure by the MAP sensor located on the top left side of the IM. When you spray meth injection it is sprayed into the SC and through the IM. Its safe the say that the vapors from the Meth Injection pass by the MAP sensors effecting is IAT2s temps.

E85 is injected into the cylider head after the IM and after the MAP sensor. So its cooling benefits are not shown in IAT2s.

Exhaust Gas Temps (EGTs) is a much better tool to compare how well the entire combustion process is performing. Not just how well the IM is being cooled.

Bottom line...The lower the IAT2s the better.

 

I say fuc* iat2s higher the better !!! Not ... I say anything above 139 1/4 is to to hot...... Lol I start taking timing out at 135 just becuz I can... Lol

 

This thread was over 1 year old, and it has been brought back from the dead.

Flashy doesn't even have a SS/SC anymore. He has a 6.0L GTO with intake, full exhuast, and cams.

 

Highest I've ever hit was 77, in a 3rd gear pull. But I'd expect that from a stocker cobalt.

Posting in 1 year old threads....nice way to establish my self =)

 

At least you didn't bump it.....

 

I see about 150* after a 4th gear dyno pull from 2k rpms, have yet to do one on the streets cause Im afraid to go 160 mph in my cobalt.

 

So don't go 160. You know? You don't have to do a 4th gear pull up to redline. Do a 2nd gear pull, or a 3rd gear pull. Or just keep it into boost, then get out of it for a few seconds, then get back into it so it wouldn't have enough time to cool down so you could see what/how your IAT2's change.