2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

using hood scoop for ram-air?

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Old Apr 4, 2003 | 10:25 AM
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using hood scoop for ram-air?

Has anyone moved their intercooler to the front of the car and setup a ram-air intake via the hood scoop?
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Old Apr 4, 2003 | 11:10 AM
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1987RX7guy's Avatar
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I heard that "RAM-AIR" provides very little gains. I think a CAI would be better. All you need is a cone intake and some ducting.
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Old Apr 4, 2003 | 11:30 AM
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i dunno if you'd want a filter to be located on the TOP of the engine
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Old Apr 4, 2003 | 11:36 AM
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Ram Air done properly can make a big difference from 60 on up. I am working on a set-up for my car right now. It is actually a big job if done correctly. Remember to put the intake in a high pressure zone. One inch above the hood is a MINIMUM. The best place would be in the front edge of the bumper, but this is a lot of work.
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Old Apr 4, 2003 | 11:38 AM
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yeah i would just rather stick a scoop on the front just behind the bunper cover. the trick is not to obstruck the air flow to the radiator or oil cooler.
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Old Apr 4, 2003 | 12:53 PM
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If you don't have fog lights...

HINT...

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Old Apr 4, 2003 | 01:04 PM
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I do have fogs. When i get the money together for the front intercooler they're coming out though
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Old Apr 4, 2003 | 01:11 PM
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hood scoop...

The hood scoop doesn't pass enough air to make "RAM AIR" effective anyways...

The actual design of the hood scoop doesn't allow enough air through...by the time the air has reached the hood scoop after being "cut" into by the front end of the car, the majority of the air flow is already over top the hood scoop...

I remember someone had posted an aerodynamics chart of the FC on here at one point, it really showed how uneffective the hood scoop really is.

If it was 1" higher, then it would be worthwhile.
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Old Apr 4, 2003 | 01:34 PM
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the mazdaspeed scoop is likely a lot higher for that reason (it looks ok but the stock one is much nicer).
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Old Apr 4, 2003 | 03:53 PM
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yeah, the stock scoop is actually in a vacuum zone, so you would gain nothing.
You could get an aluminum hood (no scoop) and make your car sort-of a sleeper.
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Old Apr 4, 2003 | 06:24 PM
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Originally posted by skyypilot
Ram Air done properly . . . is actually a big job if done correctly. The best place would be in the front edge of the bumper, but this is a lot of work.
I agree 100%
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Old Apr 9, 2003 | 10:45 AM
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A few more words about Ram Air. I made an excellent setup for a car I had long ago. To prove to you guys that it can have major effect, I will tell you that I installed a boost gage in my intake and at 60 mph I had 1 PSI. Don't laugh, even that much makes a difference. At 100 MPH, I had 3 PSI. DO I have your attention now? At 140 MPH. I had almost 5 PSI, right when the car needed it most. When I finish mine, I will post picks and boost numbers for you........
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Old Apr 9, 2003 | 10:52 AM
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A few more words about Ram Air. I made an excellent setup for a car I had long ago. To prove to you guys that it can have major effect, I will tell you that I installed a boost gage in my intake and at 60 mph I had 1 PSI. Don't laugh, even that much makes a difference. At 100 MPH, I had 3 PSI. DO I have your attention now? At 140 MPH. I had almost 4 PSI, right when the car needed it most. It is like having a FREE turbocharger. As I said before, it must be mounted in a high-pressure area. That dinky scoop on the TII hood is trapped in boundary layer air and I seriously doubt it does anything at all to boost performance and it has a small drag penalty. It is way to low to be effective. When I finish mine, I will post pics and 'boost' numbers for you........
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Old Apr 9, 2003 | 06:33 PM
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Oh hell yeah, I knew it would make a difference but I never thought it would exceed one psi. I'll have to get a boost guage on mine when it is done and put up some pics of my own.
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Old Apr 9, 2003 | 07:31 PM
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skyypilot, I'm assuming you have no pics?

I'm working on the exact same setup right now...
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