hood mounted ic
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Joined: Apr 2005
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From: houston, texas
then why was jobes performance so succesful? it seems like the top mount would be more efficient. shorter tubing, opp for much larger ic, and it doesnt have to share air with radiator.
Last edited by 05f250fx4; Jun 7, 2006 at 12:43 PM.
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Originally Posted by 05f250fx4
then why was jobes performance so succesful? it seems like the top mount would be more efficient. shorter tubing, opp for much larger ic, and it doesnt have to share air with radiator.
You are right about shorter tubing. But as the IC is in front of the radiator, I don't think sharing air is a problem for the IC - maybe for the radiator.
My question concerning efficiency is - how do you force anywhere near as much air through it as a front-mounted IC?
Subaru's giant hood scoop works, but the top of the hood has much lower air pressure than the front of the vehicle. Cowl induction would be a decent alternative, but I'm not sure how large you can make the opening before it starts interfering with forward visibility.
Ideas?
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Okay, here it is.
http://www.jobeperformance.com/wst_page8.php
I'm still uncertain how the radiator fan can pull air through the intercooler - because the IC is located behind the fan, the fan SHOULD be pushing hot air up through the IC.
Anyway, I'll read more later.
http://www.jobeperformance.com/wst_page8.php
I'm still uncertain how the radiator fan can pull air through the intercooler - because the IC is located behind the fan, the fan SHOULD be pushing hot air up through the IC.
Anyway, I'll read more later.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
I'm skeptical as well. I had a few minutes to go read his page and he mentions a fan is mounted on the bottom of the IC to help pull air through. If there was a hood scoop that didn't look like a whales mouth and that you could see over, forcing air through while underway I think it would be a very cool setup.
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Originally Posted by Kwikkordead
I'm skeptical as well. I had a few minutes to go read his page and he mentions a fan is mounted on the bottom of the IC to help pull air through. If there was a hood scoop that didn't look like a whales mouth and that you could see over, forcing air through while underway I think it would be a very cool setup.
Yeah, a whale's mouth hood scoop wouldn't be very pretty! I still think the best way would be with a cowl induction setup - but because of the sheer size and mounting position of this IC, even cowl induction wouldn't be exactly, uh, subtle...
I still have a problem with his claiming the radiator fan pulls air through the IC - I mean, it spins and creates an area of reduced pressure behind the radiator, which draws air through the radiator. By doing that, it creates a HIGH pressure zone behind the fan, which forces the radiator air past the engine and to the easiest path of (lower pressure) travel - usually past the engine and down beneath the truck. But - if you put an opening in the hood (which is in a notoriously low pressure area and is why most hood scoops don't work), wouldn't the low pressure of the mid-hood region tend to pull warm underhood air up through the IC?
I must be missing something.
... or not.
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man looking at those pic i think that the dumest thing i ever seen i dont see how any air can flow across the inter cooler with the engine right under it much less with out any kind of air scoop over it
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From: Cabot, Arkansas
I'd bet that when underway that thing performs exceptionally well. Hot engine air or not it's still going to be substantially cooler than what's coming out of the turbo.
But I've just gotta say...that is about the butt-ugliest contraption I've seen under (or through
) a superduty hood.
Not really crazy about the idea of soaking the engine down every time it rains either.
But I've just gotta say...that is about the butt-ugliest contraption I've seen under (or through
) a superduty hood. Not really crazy about the idea of soaking the engine down every time it rains either.
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Joined: Jul 2005
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From: 21791
Originally Posted by cookie88
I'd bet that when underway that thing performs exceptionally well. Hot engine air or not it's still going to be substantially cooler than what's coming out of the turbo.
But I've just gotta say...that is about the butt-ugliest contraption I've seen under (or through ) a superduty hood.
Not really crazy about the idea of soaking the engine down every time it rains either.
But I've just gotta say...that is about the butt-ugliest contraption I've seen under (or through
) a superduty hood. Not really crazy about the idea of soaking the engine down every time it rains either.
i agree with cookie and spirit on this.. imagine checking your oil... does the IC go up with the hood? it seems exceptionally heavy...plus not to mention how ugly it is. if the fins were somewhat on a more foreward angle, it would help pull air in the intercooler moreso than having to pull it down and make a 60* (?) turn into the IC. you will never see my truck with a hole that huge cut in the hood.
Elder User
Joined: Aug 2005
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From: Dallas, Texas
No, there's a hole in the hood. It's a "shaker" to quote the site. Unfortunately for that design, SHEER will make it less efficient than the stock location. Air needs to run through not over.
Someone mentioned the WRX hood, funneling air down THROUGH the IC.
Boost comes up quicker because of shorter runs in the plumbing, but I think someone already mentioned that.
Although some air will make it through in that position, it will not work as well as advertised because of that HUGE CORE. If it were thinner with smaller tanks you might see some benefit. That huge bastad needs to be up in front.
I recount my three word advice.....ten, foot, pole.
Someone mentioned the WRX hood, funneling air down THROUGH the IC.
Boost comes up quicker because of shorter runs in the plumbing, but I think someone already mentioned that.
Although some air will make it through in that position, it will not work as well as advertised because of that HUGE CORE. If it were thinner with smaller tanks you might see some benefit. That huge bastad needs to be up in front.
I recount my three word advice.....ten, foot, pole.
Elder User
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From: Dallas, Texas
Now that I go back and look at the angle this thing sits at.....the more I am convinced it's a bad idea. That thing looks like it's actually going to draft from the engine compartment....not a good thing.
I don't mean to sound like a pestering housewife here, but of all of the mods offered here, advice, etc. This thing has bad idea jeans written all over it.
I don't mean to sound like a pestering housewife here, but of all of the mods offered here, advice, etc. This thing has bad idea jeans written all over it.
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From: Miamitown, Ohio
The main reason Subaru people (I have a good friend with one) get rid of there topmout intercoolers is because they have a bad tendancy to get heat soaked (the whole thing gets very hot) inturn its like not having an intercooler at all.