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Innercooler - Before or After

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Old 10-16-2010, 10:21 PM
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Innercooler - Before or After

Okay, here is the question that has been bothering me for awhile now . . .

Where should I put the innercooler, before the turbo or after the turbo?

Would it be better to have the cold air be compressed or normal air be compressed then chilled?

Is there a difference?
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Old 10-16-2010, 10:34 PM
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please read the major horsepower section.. please.

Name:  turbo_schematic.gif
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and it's intercooler.. not innercooler
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Old 10-16-2010, 10:41 PM
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Thanks for the spell-check there.

I have seen the picture above many, many, many times and see that the "intercooler" goes after the turbo.
But what would the problem be if it was before the turbo?
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Old 10-16-2010, 10:42 PM
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the hot exhaust is what spools the turbo, the cold denser air is what goes into the engine.
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Old 10-16-2010, 10:50 PM
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Originally Posted by ripigs
Thanks for the spell-check there.

I have seen the picture above many, many, many times and see that the "intercooler" goes after the turbo.
But what would the problem be if it was before the turbo?
If you are talking about cooling the air into the compressor then - pointless exercise . What heats the air up is the compressor so you still get hot air going to the engine .

If you are talking about cooling the exhaust gases then ................. there is no hope for you LOL
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Old 10-16-2010, 10:51 PM
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Originally Posted by laythor
the hot exhaust is what spools the turbo, the cold denser air is what goes into the engine.

I know all of that ^^^^^


But what would the problem be if I chilled the air before it gets compressed versus getting chilled after getting compressed??
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Old 10-16-2010, 10:58 PM
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Originally Posted by Brettus
If you are talking about cooling the air into the compressor then - pointless exercise . What heats the air up is the compressor so you still get hot air going to the engine .

If you are talking about cooling the exhaust gases then ................. there is no hope for you LOL

Yes, I am talking about cooling the air before the compressor.
But now that you mentioned that the air gets hot because of the compression, which like you said would be pointless. Thankyou, a lot more help was just given than somepeople.

And no, I have no idea why anybody would want to try and cool the exhaust, dont know how that came out of all of this.
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Old 10-16-2010, 11:04 PM
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Originally Posted by ripigs
And no, I have no idea why anybody would want to try and cool the exhaust, dont know how that came out of all of this.
stranger things have been suggested on this forum so we like to prepare for all eventualities ...
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Old 10-16-2010, 11:20 PM
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Originally Posted by ripigs
But what would the problem be if I chilled the air before it gets compressed versus getting chilled after getting compressed??
I think that is a fine idea... how on earth do you intend on achieving it? Spray the intercooler with LN2?
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Old 10-16-2010, 11:32 PM
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Originally Posted by oltmann
I think that is a fine idea... how on earth do you intend on achieving it? Spray the intercooler with LN2?

What exactly do you mean by, how do i intend on achieving the cold air?

Well the intercooler works the same way no matter where it is placed, its purpose is to chill the damn air.
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Old 10-16-2010, 11:42 PM
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Originally Posted by ripigs
What exactly do you mean by, how do i intend on achieving the cold air?

Well the intercooler works the same way no matter where it is placed, its purpose is to chill the damn air.

yes but it can't (without some other cooling medium added) get the air temp any lower than ambient and that is the temp of the inlet air anyway .
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Old 10-16-2010, 11:47 PM
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How to explain thermodynamics to someone with a weak understanding of hot and cold.

Gotta be a troll, right?
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Old 10-17-2010, 01:59 AM
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for some reason he wants to cool the exhaust gasses to ambient before they hit the snail. He's revolutionizing FI before our eyes!
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Old 10-17-2010, 03:46 AM
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Originally Posted by ripigs
What exactly do you mean by, how do i intend on achieving the cold air?

Well the intercooler works the same way no matter where it is placed, its purpose is to chill the damn air.
I'll answer you... with a question.
Does the air get hot before or after the snail and why? Answer this and you'll see why you are entertaining us better than george carlin would!
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Old 10-17-2010, 03:50 AM
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LOL wow just wow
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Old 10-17-2010, 08:50 AM
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He needs meth... Just not sure if it's h2o or crystal.
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Old 10-17-2010, 01:21 PM
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this has got to be a joke
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Old 10-17-2010, 01:25 PM
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OKAY NOW
lets get this **** straight
I have no idea where this exhaust thing came up at.
I just wanted to know if there was a difference between having a setup:
-airintake-intercooler-turbo-intakemanifold
versus the normal setup:
-airintake-turbo-intercooler-intakemanifold
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Old 10-17-2010, 01:31 PM
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OKAY NOW
lets get this **** straight
an intercooler will not reduce ambient air temps, below ambient air temps

youre not reinventing the wheel here

/end thread
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Old 10-17-2010, 01:36 PM
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Originally Posted by paulmasoner
OKAY NOW
lets get this **** straight
an intercooler will not reduce ambient air temps, below ambient air temps

youre not reinventing the wheel here

/end thread

Thanks for that nice and simple straight forward answer, thats all i needed


/end thread
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Old 10-17-2010, 01:39 PM
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Compressing the air raises it's temperature. The intercooler is placed after the compressor in an attempt to lower that air back to ambient temperature. If the intercooler was placed before the compressor. There would be nothing to lower the temperature of the compressed air before entering the engine. The air entering and exiting the the intercooler would be at the same temperature.

Edit: I guess I'm just a little late.
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Old 10-17-2010, 01:43 PM
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Best thread ever.
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Old 10-17-2010, 05:50 PM
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Originally Posted by mysql101
Best thread ever.
I thought I was the only one.
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Old 10-17-2010, 05:57 PM
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Speaking of which, I am going to install my catback before the intake. What's the difference, right?! May as well get this crap over with and not wait for the combustion process to occur before using the exhaust system.
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Old 10-17-2010, 06:02 PM
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Originally Posted by mysql101
Speaking of which, I am going to install my catback before the intake. What's the difference, right?! May as well get this crap over with and not wait for the combustion process to occur before using the exhaust system.
why stop there .. Put a muffler in there as well and put the air filter on the exhaust . Why has no-one thought of this stuff before ?
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