Cold Air vs Warm Air... Potential Stupid Question

[s2king]

Was just wondering, why is it that people worrie about air intake that suck in warm air? I mean people want cold air to in the intake instead of warm air, if the "cold air" goes in, by the time it reaches the intake and then inside the cylinder, its going to be very warm air that goes in isnt it?
So I guess my question is, why is it important that cooler air goes in?

[chunky]

i dont really know man never thought of that hope that helped u

[panda[cRx]]

i dont really know man never thought of that hope that helped u

don't spam with useless shit like that man :wave:

[KB]

Your correct about the cool air heating up by the time it reaches the engine anyway, but if you start with hotter air, then it will be even hottor by the time it gets there.

[SKREMN]

well if you start off with lets say 20 degreas by the time it hit the head it will be 30
but if you start off with let say 10 it may only go up to 20/25 by the time it hits the head
it will go up for shure but starting off colder will mean it will stay cooler in the long run

[ek4-guy]

every degree off diffence affects power im not sure about honda figures but a mate of mine has a LS1 an with a K&N pod filter with no cold air feed lost him 7kw from the standard air box with filter
then he put his cold air box back on with a K&N panel filter an gain 6kw over the standard filter
Thats a difference of 13kw at the wheels an the only thing that changed was the air temp

[doriemon]

cold air has more density which have more oxygen so which helps to burn better and have more power
and the 2nd thing is as the other guys said, even it will become warmer, the temp will be lower if the air is cooler in the 1st place

correct me if wrong, but thats what i thought:D

[Nuttz]

i think the general rule was every 7 degrees = 1kw of power

[bennjamin]

i think the general rule was every 7 degrees = 1kw of power

thats a very very general "rule" - i doubt there is any solid proof that its true.

But ,like that was a general statment I too have one - the cooler the air the better :D

[kOncept]

yeah what doriemon said is correct, the lower the temperature of air or the 'cooler' it is the higher in density therefore containing more oxygen molecules for combustion, blah blah blah... :)

[s2king]

Cool bananas. That makes sence then, if cooler air is more denser than warmer, then I can understand why people try and get cold air inside.

[tRipitaka]

cold air has more density which have more oxygen so which helps to burn better and have more power

:thumbsup: :thumbsup: :thumbsup:

the cooler the air, the more oxygen molecules it'll have..
causing it to burn better..

i.e. your car would have to suck in more warm air to have the same amount of oxygen molecules than the amount within the cool air..

[urbanracer.com]

sorry to hijack.. :wave: im installing my cold air intake tomorrow but its bloody hot in perth at the moment (30 degrees +). would my standard airbox be better for summer??

[GreekWarrior]

Hey would it be possible to reroute the air-con so it goes in to your intake? thus offering cold air. :p

[s2king]

Hey would it be possible to reroute the air-con so it goes in to your intake? thus offering cold air. :p

Haha good thinking there, but the amount of power you loose by turning air con on, would be the similar amount you gain from the really cold ait the air con is feeding in.

[sleepyf1]

You can fit in more cold air per square cubic metre than you can with hot air.

[SKREMN]

Hey would it be possible to reroute the air-con so it goes in to your intake? thus offering cold air. :p
The air con will drain more power then its making

[Miss Chanel]

I see.. how interesting. (Bong, ur such a geek)

So the coolest place possible would be at the bottom, near the wheels (unless uv got an intercooler) right..

Do they have devices where you put an electronic cooling device infront of the airbox/intake to cool it? hehe..

[SKREMN]

you dont wanna go to low coz then you'll be picking up all the crapy air and dirt into your filter
you can buy these stupid pointless devices that are suposed toforce air into your intake its like a little fan but they dont work

[Miss Chanel]

you dont wanna go to low coz then you'll be picking up all the crapy air and dirt into your filter
Is that how the filter wiring (EDIT: i mean mesh) gets all dented and broken?

[chunky]

aw man wdf im already on red bar so pathetic

[turtleEK1]

So the coolest place possible would be at the bottom, near the wheels (unless uv got an intercooler) right..

another reason that could be bad is you may end up sucking up the hot air from the hot road surface... i guess the ideal height would be headlight height or there abouts?

another draw back (like what was said earlier in thread) is the air becoming hotter while going from the filter to the combustion chamber from engine bay heat! some heat wrap could help that along the intake pipe? you could wet the heat wrap then to keep it cool i guess if you plan on being picky? sorry if its kinda off topic... :p

[HondaCivic]

Who knows much about carbys?? My understanding is that they dont like cold cold air? they like it a bit warmer?? who can confirm this?

Because yeah i have a round chrome air filter housing that just sits ontop of the engine, and is sucking hot air, altho this had made a big diff over the stock housing and cai, i would like it to be even better. theres no real way to put cai onto it, the only option is a scoop.

[ZeForce]

I understand that cold air is more dense which means it carries a greater amount of oxygen into the combustion chamber and therefore producing more power... But doesnt hot air have the advantage of moving faster and therefore being able to keep up better with the high demand for air at high rpm as well as giving better throttle response?

[chunky]

god dam it im already on red bar