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Dan M
Dodge Dakota
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12/31/2007
06:31:02
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 Subject: cold air intakes
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Message:
What's the pros and cons of various materials when making the tubing for a homemade air intake?
I've seen the following material used in either home made air intakes or commercially available ones
plastic
aluminum
white pvc
black pvc
rubber
what about the differences in texture? I've seen some flexible plastic tubing on some commercial cai kits. It's kind of like dryer exhaust hose, that spring type coil. So it's obviously not going to be smooth on the inside like other materials.
Stock is made with rubber, is it for cost? stability and longevity?
aluminum will heat up, but how much does it change the temp of the air flowing through it?
What kind of heat can white or black pvc take?
- Dan M
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Josh
Dodge Dakota
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12/31/2007
14:06:53
| RE: cold air intakes
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Message:
Don't use PCV pipe for a custom intake. Use ABS. ABS stands up to the underhood temperatures better.
Whenever I see a website or info page that has good reference material, I save the URL in a cross-referenced file, so....
Looky here. ABS.
http://y2kota.us/coldair.html
and here. More ABS.
http://www.paysonarizona.net/MyProjects/ProjectDak/Project_Dakota_03_Cold%20Air%20Intake.htm
And here. Even more ABS.
http://www.dodgetrucks.org/forums/viewtopic.php?t=79449
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.boB
Dodge Dakota
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12/31/2007
20:58:36
| RE: cold air intakes
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Message:
Corrugated tubing is very easy to work with, it's cheap, and it will last under heat and advers environments. Lots of guys use it.
BUT, that's a huge mistake. That irregular surface creates lots of turbulance in the intake tract.
A good air intake will have the floowing features:
- short, with as few bends as possible.
- as smooth an inside surface as possible.
- Truly cold air. Shielded from engine heat
- Have a big filter. As big as you can find.
|
well
Dodge Dakota
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1/01/2008
00:38:51
| RE: cold air intakes
IP: Logged
Message:
smooth surface is what you want
with what ever you do choose to use
and smooth transition (2 - 45's instead of a 90)
the less the turbulence the faster the air will flow
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