Breathing Fresh Air (finally)

[beeza]

Here's a bit of a read on 'Ram air'.Putting a vacumn guage as someone mentions in front of the TB would tell you how much air is going in at certain RPM's.
http://www.d-series.org/forums/showt...hlight=install

I'm content with my butt dyno being satisfied

[hisoka]

Fa Sure,it's 180mm long and 120mm in diametre with a 3" inlet/outlet.

Do U mean cut it here:

yep exactly there,

nice article post just before, proves that the J's Racing type `1 intake is the best for a ram air affect lol~

[beeza]

Interesting.I'll have a ponder on that for a while,thank U.

It's so interesting aerodynamics,ram air etc.

This is interesting too.It's about the hood tilt mod:

Hood Tilt

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First of all, one may ask;

Q: "what is the purpose of this? and has it been proven? "

i'll tell you why first.

A: There's been a lot of debate over the actual function of this mod...One argument is that it keeps the temps in your engine bay down, because people think the hot air flows out through the gap. In actuality there is cool air flowing in. Think about it this way...if you have a sunroof in your CIVIC, and you pop it up without sliding it back, what happens? You get a small amount of outside air coming in through the crack, kinda like a vacuum.
This is where the mod becomes a little more functional...for those with a B or D series, and ITB's. The vacuum created by the hood being propped and the suction of the throttle bodies means greater airflow straight into the engine. I've heard of as much of a 8-10whp gain from doing this and tuning accordingly, but I've still seen no dyno charts to prove it. Theoretically it makes sense, but whether or not the gains are noticable is debatable.
It also becomes somewhat functional for those lucky enough to have K-swaps, where the header sits right up against the firewall. The whole rear section of the engine bay tends to get much hotter, and the cool air being sucked in may lower that temperature, and the air then flows out the bottom of the engine bay, kinda like an even bigger vacuum.
These are the only 2 'real' scenarios where I've seen it functional for our honda's. As for most of the people that do this, about 95% of them OVER DO IT & don't know what it's for and they just think its a m4d tYte JDM thing....where in actuality, it just makes their cars look that much more ridiculous.

[D16EK1]

hmmm... that sounds pretty intresting, because i thought people who had their hoods tilted up was just like people who wanted extra 50hp from tilting their hood and some how cooling the surface of their engines.

[beeza]

I guess the only real way of knowing is if someone has done under hood temps tests...I'll check when I get time.

[CRXer]

thats strange,all the heated air from my popped bonnet seems to find its way into my fresh air vent & thus into my cabin quite easily,so much for the vacuum effect...........

[beeza]

Yeah,I reckon it would work.

[CRXer]

sorry,im actually saying its not workng in my car,the fresh air vent is under the wiper grill outside the bonnet,so all the hot air is def "exhausting" from the gap at the rear of my bonnet.

[beeza]

so all the hot air is excaping from under the hood and into your car,even with the air off?

[CRXer]

so all the hot air is excaping from under the hood and into your car,even with the air off?

correct,air off,temp lever on cold(even made sure the heater hose valve was fully in the off position) & still hot air coming thru the vents.

My catch can isnt set up right either atm(thanx to the very difficult to work on DC2 intake manifold) & im getting oil vapours thru the vents as well.

Could be different for different cars with different engines,who knows.....

[beeza]

Hey Gio 'LSD GD3' on here can get em for 120 + shipping.Great price! Give him a PM Yo!

[beeza]

correct,air off,temp lever on cold(even made sure the heater hose valve was fully in the off position) & still hot air coming thru the vents.

My catch can isnt set up right either atm(thanx to the very difficult to work on DC2 intake manifold) & im getting oil vapours thru the vents as well.

Could be different for different cars with different engines,who knows.....

I see.Sounds like a leathel combo.Fix that up quickly