Heat sheilding for intakes

[aluke000]

Most of the intakes I have seen are just plain polished extruded metal. Metal tends to conduct heat. This would increase the temp of the cool air that we want our engines breathing after it gets sucked in through our fancy cold air intakes and filters. A ceramic coating would not be a bad idea. Anyone come up with other solutions? I have seen thermal wrap for the exhaust manifold that is supposed to reduce engine compartment temp. I have also seen a metal heat sheild used to isolate the air box/battery area fro the rest of the engine compartment used by a popular magazine.

[P10DET]

Originally posted by aluke000
Most of the intakes I have seen are just plain polished extruded metal. Metal tends to conduct heat. This would increase the temp of the cool air that we want our engines breathing after it gets sucked in through our fancy cold air intakes and filters. A ceramic coating would not be a bad idea. Anyone come up with other solutions? ....

There is not enough heat transfer there to make a significant difference. If you were to use a ceramic coating, you would have to use Swain's White Lightning coating to have any real effect. The other ceramic coatings are little more than ceramic paint and don't provide much of a thermal barrier.

[redvalkrie]

That is what I am going to fabricate, I posted a thread "Aluminum intake housing" I am going to caot the inside for heat & other reasons, the heat is not critical it wont get to hot in there to greatly affect the air but it will be hopefully decreased with what I am going to fabricate + I wont get all the dust that gets on the engine.

I will post pick's to let you all know!

[aluke000]

I am looking at possibly fabbing my own too. Most of the intakes that I have found don't impress me much except the AEM CAI.
Here's a good article from a guy that made his own CAI for a Del Sol. He used steel pipe and used ceramic paint inside and outside. Check out the end of his article on the temp of his intake.

http://www.teamdelsol.com/howto/coldair/diycoldair.htm

[aluke000]

I just checked your post Red, and I think we are on different tracks. (I was looking at a custom intake tube and you are looking at an enclosure for the filter area)

I believe Sport Compact Car had done something similar for a classic SE-R. Their intent was to isolate the hot air closer to the engine from the cooler air by the filter. They used sheet metal that ran from the firewall near the strut tower to up near the battery. If memory serves, it successfully reduce intake temps.

Can you tell me more about what you are looking to do?

[AznVirus]

three words...

cold air intake

[aluke000]

Your three words are nice, but that's what this thread was originally about in the first place. I wanted to get ideas on how to better thermally isolate the intake pipe in a CAI. My concern was the precious cold air being heated as it passed through the typical heat conductive aluminum intake pipe used in a CAI system.

[AznVirus]

ohh i thought you meant ram air :finger:

well you could try that mesh type stuff, the stuff thats before your catalytic convertor under your car, id think that keeps the heat away. watch out, ceramic can crack

[aluke000]

Yeah, I have seen the stuff used on exhaust manifolds and headers. I didn't get a close look, but it appearsed to be like a fiberglass batting or something. Kind of an ugly thing to cover up your nice looking intake with.

[aluke000]

Hey Deric, I looked at the pics of your car (I also have a Pearl White 95) and you don't have a cold air intake in the pictures? Are they older pictures and you've upgraded to a CAI since?

[AznVirus]

i havent installed the cold air part of my intake. i have a hotshot cold air intake, but made it ram air. i get a lot of car washes and i know that they will spray the air filter and soak it with water, and im just worried about the water getting sucked into my engine so i stick with ram air.

[aluke000]

Time to look into the AEM bypass valve. You can get them for less than $40.

I am also experimenting with various intake configurations to find what best fits my needs.

So are you still using the tiny funnel choke tube from the factory that ran into the old airbox or have you made up something else for better airflow?

I don't believe that little choke tube was designed for positive airflow, but negative. It was design to have air sucked through it from the engine, not really to have air pushed into it from the outside.

Creating a true ram-air system for short tube intakes is something else I have thought about. Using a filter system with an open top instead of a metal cap, you can have an isolated system directing air directly into the top of the filter.

[redvalkrie]

Hey has anyone checked Knight engineering (iceman intakes) they are made of a space age plastic that resists heat they use the plastic on nasa shuttle, maybe going to a TAP plastics & having them creat a piping like you want will do the trick.

Know I understand what you want to do, my brother inlaw is doing this to his jetta. I am going a little difrent a box around the filter with a snorkel to the out side for fresh air .

Well I will keep you update to see if it goes well!

[AznVirus]

im just using the ram air tubing part for my intake. it comes in two parts. im not sure where i could put the aem bypass valve, ive thought of that, maybe it will work. im going to try it

[aluke000]

I didn't think Iceman made an intake for the G20/Primera or any SR20DE's?

I thought the only Nissan they made them for was the Skyline (like there are gonna sell a whole lot of Skyline intakes in the US for a car not sold in the US, huh?)

Any idea if they have a website?