Question on Heat Absorbance with rubber VS metal in intake system

[1991gs-t]

Hey guys, was looking into re-doing my intake system and a couple of issued crossed my mind. First was having a metal intake pipe vs a rubber one. What I'm trying to figure out here is wether the absorbency of the heat from the engine bay on a metal intake would increase the intake temps greater than it would on a rubber one. I understand that the metal intake itself will absorb quite a bit of heat and quite possibly lower the air temps in the surrounding area in the engine bay, but how does that compare to the intake temps being heated up as a result of the heat absorbing metal? I'm really looking for the most efficient way to decrease air intake temps without other factors such as intercooler and such; simple the only factor able to be changed would be the intake setup. I would like to do a intake box style setup where the intake filter itself is in a box with only two 4" ports connected to 4" ducts to an air source. Once again I'm not sure wether to make the box itself out of metal or rubber. I guess since the air source is only coming from outside, that a metal box or metal plumming wouldn't be necessary as temps under the hood would not matter. Simple maintaining those temps would. So in my opinion, a rubber intake with a rubber box would be best, but I'm really open for opinions and suggestions.

thanks

 

[1991gs-t]

no ideas?

 

[larsrya8]

This is my thinking on the intake pipe:

I don't really think it matters what it is made of for heat reasons. The air will be sucked through it so fast that it probably won't have almost any heat transferred to it by the pipe. If you went the rubber route you'd have to custom fabricate it because I don't think anyone sells an aftermarket one for our cars.

Your best bet would be to have the air filter placed so it will get access to cooler air. Seeing as you have a FMIC you could put the filter in the spot where the SMIC used to be. Several people have done this with a K&N filter and then put the "water blocking condom" over the filter to protect it from water.

I also think that having everything made of rubber would also require it to be heavier than their metal counterparts. A metal intake pipe would probably also be smoother than a rubber one, but I'm not sure about that.

 

[Defiant]

It won't matter. The exposure time is insufficient.

Do not bump your threads.