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Old 03-13-2004, 03:53 PM   #1
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Default intercooler horsepower

Hi everybody!
im new on the bonneville club,
just wanna ask how many hp can i get from an intercooler?

cause, when i bought my car, last december, the outside temperature was like -15 to -25 celcius(montreal)
the car was very quick, good response, but now, he seems a bit less quick,(5- 10 celcius) and i dont like that
i want more power, im wondering if an intercooler is a good choice over a supercharger pulley.

and, what quarter mile can i expect with one of this mod?

very much!

-sorry if my english is not
perfect, im not a perfect bilingual.
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Old 03-13-2004, 04:29 PM   #2
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Your english is great, better than my french
The intercooler is not much of a power adder........what? The intercooler will allow you to run a smaller pulley without the risk of Knock Retard, say as low as 3" with minimal mods (intake, exhaust, lifters etc).
There are gains to power in cooler weather but at the same time the cold is hard other things.
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Old 03-13-2004, 04:55 PM   #3
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Well, thank you very much,
i think i will not put an intercooler.
so, can a smaller sc pulley alone do something interesting?
and witch size is the best for stock engine?
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Old 03-13-2004, 05:06 PM   #4
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We need to know what year your car is to answer those questions.
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Old 03-13-2004, 07:29 PM   #5
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An intercooler will give you a colder air charge. But it'* biggest benefit is the capability to run other mods like a MUCH smaller pulley on the */C.
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Old 03-13-2004, 08:01 PM   #6
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Give us a little more info Michel - comme ca on peux t'aider une peu

Cheers,
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Old 03-13-2004, 09:53 PM   #7
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An intercooler itself probably won't add any power. You actually may loose some because of the boost drop over it. But, the idea of the intercooler is to cool the air coming out of the supercharger. So this allows you to go to a MUCH smaller pulley, and usually allows you to run more timing advance, significantly improving the cars performance. The difference it makes depends on your modifications. If your car is stock, you won't be able to go much smaller than a 3.1 or 3.0" pulley (still giving you a VERY noticable gain). But if you have headers, rockers/cam, CAI, t-stat, colder plugs, etc.... you may be able to drop down to a 2.8, or maybe even smaller. On average it usually adds about 40hp, and drops the 1/4 mile time .3-.6 seconds, which is a SIGNIFICANT difference.

Not only that, but you know the difference in power your car has when its colder out? Well, that difference is even more when you have an intercooler, because the outside air cools off the water in the intercooler. So there is already colder air coming in the air intake, and then the cold outside air cools the water off more, thus cooling the colder air from the air intake even more, giving you even more power. The difference in my STE is so much that you can feel the difference between 0 & 20*F. It gets significantly faster the colder it gets.

IMO an intercooler is one of the best mods you can do to these cars...even better than a cam swap IMO. And, ZZP is coming out with their low cost (under $500) intercooler very shortly, so then it will be so cheap that you'll almost HAVE to get it.

Shawn
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Old 03-17-2004, 09:09 PM   #8
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Hmmmm... $80 (USD for all you Canadiens) or $1200ish for an intercooler. This is assuming no pulley swap already. Just don't forget a CAI, lower temp. t-stat, and colder plugs to get rid of that KR. So it became $400ish. Yet, it still seems like a bargain.
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Old 03-18-2004, 12:00 AM   #9
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If you want to safe big$$ go into your local autorecycler ( wreckers) find an turbo /SC car be it import or not ...make sure you have an measurement of wnat you can stuff in front ....saves the big dollars buyin a good USED one lol.....now if you want to pack a bigger wallop with cold air try a cyro-cooled intercooler....
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Old 03-18-2004, 12:07 AM   #10
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Quote:
Originally Posted by turtle_sse
If you want to safe big$$ go into your local autorecycler ( wreckers) find an turbo /SC car be it import or not ...make sure you have an measurement of wnat you can stuff in front ....saves the big dollars buyin a good USED one lol.....now if you want to pack a bigger wallop with cold air try a cyro-cooled intercooler....
yes, but on a supercharged car that would only solve half of your problem. You would still need to come up with the intercooler core to stick underneath the blower. And then obviously you would have to get all the hoses and the pump and everything. It would be nice to be able to use an air-air intercooler, but with the setup of the supercharger it would be VERY difficult to make work. On a turbo car with an air-air intercooler it is simple though....I may be upgrading my intercooler on my STE soon since it is pretty simple/cheap, but on an L67 I think I would invest in either ZZP'* $499 intercooler, or their $1200 one depending on what kind of performance I was looking for.

Shawn
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