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Old 08-10-2009, 04:37 PM   #1
sc00ter
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Default Post your custom intake heat shields

I'm sure this is a pretty standard topic, but for some reason I'm finding nothing in my searching today.

I am looking for simple and effective custom heat shield ideas. I've been reading that intake heat shields can lower intake temps significantly. I'd like to take Saturday or Sunday to fab something up while I'm relaxing at the house.

But first I'd like to get some ideas from those of you who have already done this.

Pics, ideas, and write-ups welcome.

If you are here to start a debate about the effectiveness of a heatshield then move on please. I've already decided to do this for piece of mind and a nice weekend project.

One idea I had....

What the stock intake duct looks like:


This guy cut his to push air towards the intake instead of into the fender:


I like this idea. I'd like to design a heat shield that includes cutting the stock intake duct in a similar way and using a heatshield setup to make the air flow more directly to the intake. I think this would allow even cooler air to flow directly into the intake.
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Last edited by sc00ter; 08-10-2009 at 04:49 PM.
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Old 08-10-2009, 04:48 PM   #2
blazzin06wrxdude
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Start fabbing! You have the idea already...you don't need to see others, they all will end up essentially the same. Your goal is to isolate the filter element from the heat of the engine bay in a fashion that also allows the induction of cooler air from the fender well or from the scoop cut in the above pic. So step one is to get out the cardboard and start making some templates. Your essentially making a box for your filter with a hole preferably where the stock snorkus thing feeds into the airbox. now get creative and you can incorporate the ram air scoop into the box as well. I'd fab either out of abs plastic. aluminum or carbon fiber if available. Double wall will obviously offer better insulation. I'd even wrap the inside of the box with some sort of foil or insulating wrap to keep the heat out. check out COBB's intake box..its a nice design and should give you a good idea!
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Old 08-10-2009, 04:52 PM   #3
sc00ter
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^^ Thanks for the response. I think I'll do like you said and fab it up with cardboard and make the final product out of aluminum.

Anyone know of the best heat resistant paint to paint the aluminum? (preferably black)
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Old 08-10-2009, 04:55 PM   #4
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I actually found that the 2000 Legacy (and possibly other models/years) had an intake duct that would work pretty well for this idea.

The intake duct on the 2000 Legacy actually runs right to the area where my intake is located:



The problem is, this piece at SGP is $70.

Anyone have this intake duct laying around that they would be willing to sell me?
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Old 08-10-2009, 05:04 PM   #5
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In that pic you post the lines are hooked right up to something on the intake. Make sure your coolant lines are either wrapped in some insulating material or aren't touching any part of your intake.

Running a duct from the passenger fog light area to the intake filter is a good idea. I'd do that on mine but I have brake ducting there.

As for the black piece that feeds air to the intake filter, I just blocked mine off from going into the fender and cut a hole right by where the filter sits:



I also I put gold foil on my shield and inlet pipe:



C-West makes an unattractive grille with a scoop that feeds the black piece. The grille is pictured on a couple models in this picture:

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Old 08-10-2009, 05:28 PM   #6
wrxdrvr
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Keeping it stock but MAJORLY lowering the IAT. http://s18.photobucket.com/albums/b1...vr/STi%20Mods/
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Old 08-10-2009, 09:57 PM   #7
stage2??
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Just made it in about a half hour out of some sheet metal and rivets and rubber hose. Then painted it with black vht header paint.





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Old 08-10-2009, 10:32 PM   #8
sc00ter
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This is the design I'll be going for for the base of the heatshield I think.
Quote:
Originally Posted by stage2?? View Post
And I will use this idea to redirect the air.
Quote:
Originally Posted by MSP608 View Post

And if I can incorporate the two ideas above together to be something like this:



Then I will paint the whole thing black to look stock. This is exactly why I made this thread. Thanks for all the input so far.

I'll start buying materials tomorrow. Looks like all i need at this point is:
1) Aluminum sheet metal
2) Thin rubber hosing
3) A few nuts and bolts (guess and test on this part)

Last edited by sc00ter; 08-10-2009 at 10:37 PM.
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Old 08-10-2009, 11:38 PM   #9
crash
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Quote:
Originally Posted by wrxdrvr View Post
Keeping it stock but MAJORLY lowering the IAT. http://s18.photobucket.com/albums/b1...vr/STi%20Mods/
Those are some VERY impressive numbers!
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Old 01-19-2010, 11:22 PM   #10
OUScooby
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I'm looking at making a heat shield for myself too, just wondering if aluminum is the best material for it, would plastic be a better insulator?
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Old 01-19-2010, 11:42 PM   #11
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Does the heat shield make a big difference in preventing power loss??
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