I read in a super street that it is actually better to run a turbo without an intercooler. What do you guys think? is it true?

 

I think its best to run 25 pounds of boost on a stock motor with no radiator and no hood, that way when you are driving real fast a lot of air hits the block and cools everything down

 

Yea i agree also u might want to try without any tires just rims, i heard that takes of like 1000 lbs

 

No It's not true. I honestly can't think of any turbo application that wouldn't benefit from an intercooler of some sort.

 

also pour beer in your gas tank. i seen them do it in back to the future, it will make your car fly- literally.

 

uhhh, ok ill get right on that. whats that have to do with intercoolers.

 

I am in a sarcastic *** mood. Sorry

Yes an intercooler helps. The turbo is run off of HOT exhaust gases. The purpose of an intercooler is to cool down those gases which help to condense the air. Cooler air going into the motor is going to make more power than hot air going in.

 

because the delorean's flux capacitor was intercooled dawg!

 

for the person on SS that said its better w/o intercooler.

 

yea i got sort of confused when he said that

 

There are some instances where an intercooler may not be necessary. Like if you're only boosting to around 5 or 6 pounds. Any higher and you want the extra knock resistance an intercooler brings.

 

colder air= safer, plain and simple

 

Yeah Super Street is gay (bunch of retards that say alot of stupid **** and like riced out cars).

The only way that it's better if you run like 4-6 psi, but the only reason why it's better is because you will spool faster. At top end you will drop off on power because of the heatsoak. There are some people running that without no intercooler, and even no BOV on really low boost. Pretty good initial response.

 

Heat = energy lost = no good if more power is what you are going for.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 01BlackAc &raquo;</TD></TR><TR><TD CLASS="quote">The turbo is run off of HOT exhaust gases. The purpose of an intercooler is to cool down those gases which help to condense the air. Cooler air going into the motor is going to make more power than hot air going in.
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i could have sworn the hot exhaust gases had nothing to do with it because of the fact that the exhaust gas only SPINS the turbine. which draws in atmosphere, which the turbine compresses before it flows into the motor.

Aerodynamics 101, the more you compress air the more its temperature rises hence the benefit of an intercooler.

Pictures Here

Even logic would suggest that exhaust gas does NOT recycle through the turbine and back into the intake manifold because of the fact that exhaust gases contain well, **** that was fully burned in the cylinders.
And if turbines simply recycled exhaust gas back into the intake manifold well then there would be no need for an exhaust, catalytic converter, or any of that piping, or a muffler, or any of the things you generally put after the header / turbo manifold.

Can you post the exact article where SS said turbo is better with no IC? there must have been some kind of special situation (though i can't think of any there could be). The only thing i could think of is that you might have misread it when they were just listing some of the negative affects of an intercooler such as the pressure drop as measured between the intercooler exit and intake manifold when compared to the pressure as measured between the turbine compressor and the intercooler entrance.

 

the only instance i can think off where an intercooler isn't nessecary is in a turbo'd deisel engine where compression and heat are use to ignite the fuel air mixture even then alot of turbo'd deisel engines you see are intercooled because cool air is more dense and you can burn fuel more effciently and helps too raise the effective comp ratio of the engine.

And if you want to get more technical the exhaust gas doesn't blow or spin the turbine blades i creates a pressure differential between the cylinder head and the down pipe. hot air expands and as it expands it try to escape to a cooler low pressure area. that is why a turbo has a snail shape. as the gas expands it carries enough inertia with it to spin an impeller.(turbine blade) the shape of the blade determines the amount of inertia that is carried over from the moving gas. and in this process this gas is cooled and becomes more dense. that is why the top of a turbine blade is smaller, because the cooler gas creates more friction, and with more friction you lose efficiency. once again that is a design to keep heat down because hot goes to cold and high goes to low. that is why you see people with heat wrap on their manifold and turbo to increase the heat differential between the manifold/turbo and their down pipe.

now the intercooler on the compressor side is similar to this process. the compressor heats up gas as it's being sucked in. this causes the air to lose density. that is where the intercooler comes in. it helps create a area for the air to expand and cool off. and this area is a heat exchanger. what happens here is the surface area of the air is increased to help cool off the air (think lawn mower or vw or any air cooled engine.) this expansion not only cools the air but creates a lower pressure area than that of the compressor nozzle. (high goes to low) this is another way to increase pumping efficiency from the turbo.

so as you can see an intercooler doesn't just cool off the air but it makes it more dense, increases turbine/compressor efficiency and cools the air intake charge. it just makes more sense to use one than not.


Modified by baseballinmyass at 9:39 PM 2/24/2005

 

the pros dont even run intercoolers ie step papadakis...no bovs..

 

Dont listen to me Im a dumbass

I realize that my post doesnt make total sense

 

that's because they use methanol injection

 

ive seen it happen but it wont run to its full potential

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tdawg1030 &raquo;</TD></TR><TR><TD CLASS="quote">I read in a super street that it is actually better to run a turbo without an intercooler. What do you guys think? is it true?</TD></TR></TABLE>

Maybe if the intercooler is cracked and leaking boost. Otherwise ahhhh NOPE in no normal instance will an intercooler hurt you.

 

i didnt read that in super street, Because i dont like the mag. But, i think it is because some people said intercoolers take about 2 psi for your turbo system. if you dont want an intercooler just go supercharger.

 

low boost is fine...like say less than 5 lbs. cuz stock greddy kits don't even come with intercooler.

but after i put on my intercooler, man it was such a big difference.....

not only that, the charge pipes were very hot without the IC, but after gettin' an IC, the main charge pipe to the throttle body was warm to the touch, not blazing hot like before.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by baseballinmyass &raquo;</TD></TR><TR><TD CLASS="quote">that's because they use methanol injection</TD></TR></TABLE>