DIY Ram Air?
01-16-2008, 12:43 AM
#1
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Join Date: Jan 2008
Location: Ontario & Michigan
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DIY Ram Air?
I'm planning on buying a 1969 Mustang Fastback and installing the Boss 429 hood scoop. The engine will most likely be a 302 2v, anyway I was wondering if I installed a K&N XSTREME Air Filter Top if I could cut a hole in the hood under the Boss scoop and just feed the air into the non-ram air filter. I would most likely install a gasket and seal between the hood and filter, but would this work or could it possibly damage the engine? I'm not looking for a big boost in performance, I just detest non-functional hood scoops. I don't have much experience with automotive work specifically, but I have takena fewmetal shop and4 stroke engine courses in high school.
01-16-2008, 12:48 AM
#2
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Location: Hills of California
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RE: DIY Ram Air?
I did the same thing.
I cut away a section under the hood scoop then built a small box to direct the air flow right where it needed to be which is over the top of the K&N Xstreme. Then I used foam rubber to make the seal between the box and the air filter.
It works but I need better rubber because the foam rubber i used is starting to deteriorate. I think something like side window weather strip would work great.
Gun
I cut away a section under the hood scoop then built a small box to direct the air flow right where it needed to be which is over the top of the K&N Xstreme. Then I used foam rubber to make the seal between the box and the air filter.
It works but I need better rubber because the foam rubber i used is starting to deteriorate. I think something like side window weather strip would work great.
Gun
01-16-2008, 08:45 AM
#4
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Join Date: Jul 2007
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RE: DIY Ram Air?
you can do it but other than a cool air intake you won't see much of an improvement. here is an excerpt from my web page on the subject.
Many people have "ram air " on their cars, or at least they think they do. A hood scoop is a wonderful way to provide cool fresh air to a motor, however, even if you are cruising down the road at 80+MPH, there is not enough air pressure at the scoop to force air into the motor. The problem is that air pressure is created in front of the car. As the air is pushed out of the way, it is forced up, down , and to the sides. The upward motion of the air dissipating off the front of the car redirects any forward air that would be going into your hood scoop, up and over the car. Think of it like a bug deflector, but instead of pushing bugs up and over the car, it is air flow. I received this quote in an email:
"I have experience in the "Bug Deflector" idea. I have an '89 Mustang with a Cervini's Ram Air hood. I spent probably an extra $400 for the ram air kit. From 0-30 MPH, there is very little difference and could be slightly slower. From 30-80, you can feel a SLIGHT bit of increase. At 80+, there is a tremendous bog due to lack of air. I left the kit functional for only about a month. Since then, it's taking up storage space in the basement." Scott Fouts
As illustrated, this means little-to-no air pressure at the scoop. There is a solution, however, tubes can be run from the front of the car to a sealed air cleaner holder, which will give you true ram air. The best part is, this is something you can build at home with very little time and money.
Many people have "ram air " on their cars, or at least they think they do. A hood scoop is a wonderful way to provide cool fresh air to a motor, however, even if you are cruising down the road at 80+MPH, there is not enough air pressure at the scoop to force air into the motor. The problem is that air pressure is created in front of the car. As the air is pushed out of the way, it is forced up, down , and to the sides. The upward motion of the air dissipating off the front of the car redirects any forward air that would be going into your hood scoop, up and over the car. Think of it like a bug deflector, but instead of pushing bugs up and over the car, it is air flow. I received this quote in an email:
"I have experience in the "Bug Deflector" idea. I have an '89 Mustang with a Cervini's Ram Air hood. I spent probably an extra $400 for the ram air kit. From 0-30 MPH, there is very little difference and could be slightly slower. From 30-80, you can feel a SLIGHT bit of increase. At 80+, there is a tremendous bog due to lack of air. I left the kit functional for only about a month. Since then, it's taking up storage space in the basement." Scott Fouts
As illustrated, this means little-to-no air pressure at the scoop. There is a solution, however, tubes can be run from the front of the car to a sealed air cleaner holder, which will give you true ram air. The best part is, this is something you can build at home with very little time and money.
01-16-2008, 10:08 AM
#5
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Join Date: Oct 2007
Location: Illinois
Posts: 584
RE: DIY Ram Air?
ORIGINAL: REAVER117
...I just detest non-functional hood scoops. ...
...I just detest non-functional hood scoops. ...
Just kidding. IMO a Boss 429 scoop needs a 429 under the hood, but to each is own. As for ram air, like daze said, you get a more effective ram air by running tubes from the front of the car to the air cleaner. On a 69 you could convert to a 2-headlight system and use the other headlight buckets for the ram air intake. Would require some ducting, but would be more effective.
01-16-2008, 10:22 AM
#6
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Join Date: Oct 2007
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Posts: 241
RE: DIY Ram Air?
ORIGINAL: Daze
you can do it but other than a cool air intake you won't see much of an improvement. here is an excerpt from my web page on the subject.
Many people have "ram air " on their cars, or at least they think they do. A hood scoop is a wonderful way to provide cool fresh air to a motor, however, even if you are cruising down the road at 80+MPH, there is not enough air pressure at the scoop to force air into the motor. The problem is that air pressure is created in front of the car. As the air is pushed out of the way, it is forced up, down , and to the sides. The upward motion of the air dissipating off the front of the car redirects any forward air that would be going into your hood scoop, up and over the car. Think of it like a bug deflector, but instead of pushing bugs up and over the car, it is air flow. I received this quote in an email:
"I have experience in the "Bug Deflector" idea. I have an '89 Mustang with a Cervini's Ram Air hood. I spent probably an extra $400 for the ram air kit. From 0-30 MPH, there is very little difference and could be slightly slower. From 30-80, you can feel a SLIGHT bit of increase. At 80+, there is a tremendous bog due to lack of air. I left the kit functional for only about a month. Since then, it's taking up storage space in the basement." Scott Fouts
As illustrated, this means little-to-no air pressure at the scoop. There is a solution, however, tubes can be run from the front of the car to a sealed air cleaner holder, which will give you true ram air. The best part is, this is something you can build at home with very little time and money.
you can do it but other than a cool air intake you won't see much of an improvement. here is an excerpt from my web page on the subject.
Many people have "ram air " on their cars, or at least they think they do. A hood scoop is a wonderful way to provide cool fresh air to a motor, however, even if you are cruising down the road at 80+MPH, there is not enough air pressure at the scoop to force air into the motor. The problem is that air pressure is created in front of the car. As the air is pushed out of the way, it is forced up, down , and to the sides. The upward motion of the air dissipating off the front of the car redirects any forward air that would be going into your hood scoop, up and over the car. Think of it like a bug deflector, but instead of pushing bugs up and over the car, it is air flow. I received this quote in an email:
"I have experience in the "Bug Deflector" idea. I have an '89 Mustang with a Cervini's Ram Air hood. I spent probably an extra $400 for the ram air kit. From 0-30 MPH, there is very little difference and could be slightly slower. From 30-80, you can feel a SLIGHT bit of increase. At 80+, there is a tremendous bog due to lack of air. I left the kit functional for only about a month. Since then, it's taking up storage space in the basement." Scott Fouts
As illustrated, this means little-to-no air pressure at the scoop. There is a solution, however, tubes can be run from the front of the car to a sealed air cleaner holder, which will give you true ram air. The best part is, this is something you can build at home with very little time and money.
The sealed box with the hoses it what Ford used on the T-Bolts andOld used asimliar system on their early 442's.A kit is available from Crites resotration for the T-Bolt system. A company called Ram Air Box also makes kits that are similiar to the T-Bolt system.
01-16-2008, 11:59 AM
#7
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Join Date: Oct 2006
Location: Cork, Ireland
Posts: 6,417
RE: DIY Ram Air?
once had an Opel kadett B from 68 with believe it or not 34HP (thirtyfour) in a 70ci engine.
the airfilter had a snorkel and i attached toilet paper rolls to that forward to the front of the car and wrapped all that with duct tape.
that actually worked a bit from 40mph on. I would have never shown this to anyone, but who's showing off such an engine anyway ;-)
Kalli
the airfilter had a snorkel and i attached toilet paper rolls to that forward to the front of the car and wrapped all that with duct tape.
that actually worked a bit from 40mph on. I would have never shown this to anyone, but who's showing off such an engine anyway ;-)
Kalli
01-16-2008, 07:57 PM
#9
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Join Date: Jan 2008
Location: Ontario & Michigan
Posts: 315
RE: DIY Ram Air?
Thanks for the responses guys. I'll try a couple of different methods and see if it yields any performance gains. I don't mind if the gains are minute, but I'd hate for it to hinder performance. Oh, and as a side note I am also considering cutting out the quarter panel brake scoops.