Alright guys, I have noticed something that I am sure others have noticed. My buddy Mike2191 has a cold air kit on his 04GT and whenever he gets out of it, you cant even put your hand on the chrome inlet tube because it will scald your hand! How can this be considered CAI? Please enlighten me.
COLD AIR KIT=HOTAIR KIT
- Thread starter cmb91LX
- Start date
the air's moving too fast through the tube for it to make a real difference in making it hotter...
xtrm281gt
New Member
yeah i must also agree seeing as how I have a nice BBK chromed hot air intake on my car. It probally hurts preformance more than it helps however I kick myself for not getting a densecharger system. Those are awesome and actually work... remember d e n s e c h a r g e r mmmm good
I've never seen any dyno results posted here that showed a CAI of any sort works. I did some gains from a K&N FIPK (or whatever it's called).
1998 GT 5 speed:mrvax said:
K&N air filter w/air silencer cut
FRPP 3.73 gears & SpeedCal & Aluminum drive shaft
Steeda Tri-Ax
KaleCo turn signal fluid
Headswap-'01 heads; P&P
MagnaFlow catted X and cat-back
Griggs sub frame connectors
EEC reflash by T&J Performance
Where can I get some of that blinker fluid you got?
propellerhead
New Member
hognutz
New Member
RysRed96GT said:
if you logic is true then how does an intercooler work? if air moves to fast to change in temprature they would not work either. it would move to fast for the the temp to drop. In reality intercoolers do work so I am sure the flip side of that the "hot air intake" works as well.
oh and if you have a bbk chrome cai make sure you keep it clean. I dont know who owned my cobra before me but they should be shot for the condition they kept it in. the bbk chrome cai is all rusty and the chrome is chipping off, looks real crappy. I am going to sand it down and paint it until I can get a densecharger.
twogts4us
15 Year Member
Yep, this is true! Still, I like my C&L Trueflow pipe as it is aluminum (which is a poor conductor of heat), but it is very hot to the touch...of course, I AM in Florida, with a black car...! The C&L Trueflow pipe is huge though.RysRed96GT said:
well the air in that is being fed/forced through passages that are cooled with air or water in order to make it cooler.hognutz said:
an intercooler is totally different than a hollow tube
actually, aluminum is a much higher conductor of heattwogts4us said:Yep, this is true! Still, I like my C&L Trueflow pipe as it is aluminum (which is a poor conductor of heat), but it is very hot to the touch...of course, I AM in Florida, with a black car...! The C&L Trueflow pipe is huge though.
cai's are worthless anyway. i keep my stock airbox (no screen and no silencer) but i have a straight/smooth tube between the maf and the throttle body. the stock tube is way too rippled/rigid to make a good flow-path for air.GregGTStang said:
a moving air charge absorbs heat easily. the convection heat transfer rate between aluminum/aluminized metal is fairly high. sitting at a light the metal heats up as the engine compartment air is relatively stagnant. therefore the inlet air absorbs a greater deal of heat. alot of my friends with in cai/wai intakes bog down due to this. the inlet charge is heated up and less dense, so less power. as engine speed builds and air moves through the engine bay heat is swept away and the inlet charge cools down. at low rom/speed i doubt you would see a gain, and would hsow a loss. but at higher speeds the CAI intake would give a little help.
hognutz
New Member
RysRed96GT said:
your right an intercooler is differnet I am just saying I don't buy you velocity theory. some stock throttle bodys have coolant run throught them to elvate intake temps. if air velocity counter acted heat they would not do this. it is the same princible elevate the tep of air by raising the temp of what the air is flowing through. Now if you can show me actual intake temps I will shut up. I have a feeling you are just running on your own logic.
I have seen threads over at MD about this. getting off my soap box, I do not think it is a huge deal but I would not buy one of the cold/hotair kits.
yes an intercooler/radiator is much different than a hollow tube. the fins increase the surface area through which heat can transfer, giving a higher transfer rate and while keeping pressure up. a hollow tube has parabolic velocity profile. the air near the inner wall will be hotter than the air in the center. the hotter tha intake tube is, the hotter the air charge becomes throughout. once the car is moving the underhood air draws heat of the tube, cooling the intake flow. this in effect with drawing air from outside the engine compartment will create some power. but i htink the greater beneffit is the smoothness of the air flow of a metal tube vs the stock squiggly plastic.
calm down manhognutz said:
i understand if the air was static and just sitting in the tube, then it would take time for the air to reach the same temp as the tube. but it's not static, it's moving through quite fast so there will still be a increase in temp, but very little. i never said there wouldnt be any changes at all, i only said it wouldnt be enough to matter.
slower moving air going through a hot tube will obviously get hotter than air moving fast through the same tube. it takes time for particles to heat up.
and how would coolant elevate the temps?
now if your tube was longer (like a fenderwell kit), yes, it'll make more of a difference in raising heat.
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