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View Full Version : Any Car people? Quick question on Air Intake


Nethius
10-June-2005, 04:05 PM
If you are installing a Short Ram Intake. Does it matter one way or the other if you keep or remove the stock part that fits down by the bumper? Do yo know what I mean? Obviously you gotta remove the parts up by the engine, but what about the section down below inthe bumper with the resinator?

farmerjumperdon
10-June-2005, 04:13 PM
Not following you. Maybe some more detail. Are you talking air intake? If so, what's the resinator for? (I'm thinking resinator as an exhaust part).

By ram air, are you talking about an air scoop. If you are scooping air via a vent or hole in the hood, all the previously used ducting to get from the front of the car can be tossed. But that's too obvious - you must mean something else.

Nethius
10-June-2005, 04:30 PM
First here is the part I'm speaking of - http://www.2kracing.com/product_info.php/products_id/3110

Picture - http://www.horsepowerfreaks.com/Images/Products/AEM/Intake_Systems_Short_Ram.jpg

It replaces the stock cold air intake, but it's called a short ram becasue it grabs the air by the engine, and not down by the bumper.

The resinator, from what I understand, is the part of the intake the makes it quite. I think on my car it's a white box behind the bumper on the passenger side.

The stoke intake is bascially 2 parts. One part that is up top and connects to the engine. The other part connects to the first part, and goes down below to behind the bumper.

When adding the new intake, I can let it sit on top of the 2nd part, or I can remove the second part all together. Im wondering if it matters at all if I remove that part or leave it there.

Here's a pick of a similar after market intake installed - http://www.performancepartz.com/images/is1420.jpg

here's a pic of tht stock intake - http://www.2phast.com/integra/integra%20036.jpg

in that last picture, you see that big black box? The top part comes off, and I can leave the bottom part and everything below it, and have the new intake sit on top of it... or i can remove the whole part

Does it matter either way?

farmerjumperdon
10-June-2005, 04:59 PM
I see now. Great pics. Personally, I'd get rid of the old box and any other flotsam not needed for the new intake to work. But then again I'm an old fart who's kind of a minimalist and digs an engine compartment that is as clean and uncluttered as possible.

I'd scrap the resonator. Who needs a quieter intake. I like the throaty sound, though it doesn't look like using it is part of the plan with these systems anyway.

As long as the box, or any other stuff, is not interfering with the ability of the intake to pick up air without restriction, it doesn't hurt to leave it there. It actually might be cool if you could rotate it or somehow use it as a shield to minimize the pickup of hot air off the engine. Anything you could do to get cooler air would be better for power.

That seems counterintuitive, but cooler combustion components atomize better in a car engine. I do not know the physics behind it, but it is why some hot-rods run an ice can on their fuel line. You run the line from the fuel pump into a can, coil it around a bunch of times, then out to the engine. When you are going to be out doing the bad-rad thing, you fill up the can with ice. Use aluminum line, and make it big enough so that back-pressure is not an issue. I never thought about it before, but I suppose you could do the same with oil or tranny fluid to supplement a finned cooler. Though w/o thermostatic controls you might be able to cool it too much. I know you can't cool gas too much just using ice. But then again some racers use freon cooling in heads. Rambling on again ain't I.

darkhunter
10-June-2005, 05:15 PM
I see now. Great pics. Personally, I'd get rid of the old box and any other flotsam not needed for the new intake to work. But then again I'm an old fart who's kind of a minimalist and digs an engine compartment that is as clean and uncluttered as possible.

I'd scrap the resonator. Who needs a quieter intake. I like the throaty sound, though it doesn't look like using it is part of the plan with these systems anyway.

As long as the box, or any other stuff, is not interfering with the ability of the intake to pick up air without restriction, it doesn't hurt to leave it there. It actually might be cool if you could rotate it or somehow use it as a shield to minimize the pickup of hot air off the engine. Anything you could do to get cooler air would be better for power.

That seems counterintuitive, but cooler combustion components atomize better in a car engine. I do not know the physics behind it, but it is why some hot-rods run an ice can on their fuel line. You run the line from the fuel pump into a can, coil it around a bunch of times, then out to the engine. When you are going to be out doing the bad-rad thing, you fill up the can with ice. Use aluminum line, and make it big enough so that back-pressure is not an issue. I never thought about it before, but I suppose you could do the same with oil or tranny fluid to supplement a finned cooler. Though w/o thermostatic controls you might be able to cool it too much. I know you can't cool gas too much just using ice. But then again some racers use freon cooling in heads. Rambling on again ain't I.

It works better because a cool/cold air intake charge is denser than a warm charge. A denser charge means more oxygen to mix with the fuel, and more power. It also slightly increases your compression (don't think it's measureable, but haven't worked the math out)--and more compression=more power (at least up until you get detonation :lol: )

Farmerjumperdon is right--just get rid of the old stuff. Not only does it look better, but the more free space around you engine, the more airflow you get to cool thinks down.

[more than what was asked]

That is why engine blocks are usually a darkish color--it radiates heat more quickly so the engine runs cooler. also, you want the exaust hot (up to a point) because the hot gasses are quicker out the tailpipe (the quicker the spent gas gets out of the way, the quicker you get more fresh fuel-air mixture into the engine.

Higher volume off air into and out of an engine = more horsepower

higher air velocity into and out of an engine = more torque

[presses [Submit] while dozing off into daydreams about the next project car when he gets back to the states...]

Nethius
10-June-2005, 05:41 PM
Thanks guys! That answers my question!

Tuckerfan
10-June-2005, 08:16 PM
Another reason to ditch it, is that you might find an increase in road noise at highway speeds. Nothing more annoying than a car that sounds loud for all the wrong reasons (personally, I prefer sleepers, myself, but to each his own).

darkhunter
11-June-2005, 10:47 PM
Another reason to ditch it, is that you might find an increase in road noise at highway speeds. Nothing more annoying than a car that sounds loud for all the wrong reasons (personally, I prefer sleepers, myself, but to each his own).

The best sleeper I've had was an old, beat-up full size truck (with a race prepped 390 big block--an the old rock-crusher four speed out of an old tow truck). Had enough cam that everyone thought that it really needed a tune up. Could take off in first gear at all(the only vehilce I've ever had that I could get wheelspin without touching the gas).

But it could pass everything but a gas station :lol:

captain swoop
13-June-2005, 09:13 AM
That's why a Turbo needs an Intercooler, Air coming out of the turbo is very hot, the intercooler lowers it's temp before it hits the engine. It's also why a Super charger is better than a turbo.

Tuckerfan
13-June-2005, 09:18 AM
That's why a Turbo needs an Intercooler, Air coming out of the turbo is very hot, the intercooler lowers it's temp before it hits the engine. It's also why a Super charger is better than a turbo.Superchargers also don't have the lag time of a turbo charger.