----Home made cold air intakes - SHOW ME - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 08-19-2004, 07:51 AM Thread Starter
 
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----Home made cold air intakes - SHOW ME

OK, my last post got squat for a response, so lets ask the question another way:

How do I make a home made cold air intake off of a GM TBI (5 1/8")?


I have seen online many built using exhaust tubing, PVC, plumbing connections, etc. My questions specifically are these:

Is PVC safe to use under the hood? I read that they can melt, causing toxic fumes.


How do I connect the cold air tubing to the intake (because mine is 5 1/8")? I need ideas on how to reduce from the 5 1/8" down to the cold air tubing.


Has anyone else done this? How did you do it?


Any pictures or links would be appreciated. Thanks all.

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post #2 of (permalink) Old 08-19-2004, 08:03 AM
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Re: ----Home made cold air intakes - SHOW ME

Have you thought of hitting some parts yards? You may find what you're looking for there and you may also come up with some ideas of your own. I saw one a while back that had been made out of fiberglass.
I know this isn't much help but maybe it will point you in a productive direction.

Scott
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post #3 of (permalink) Old 08-19-2004, 01:17 PM
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Re: ----Home made cold air intakes - SHOW ME

I like this approach, and it seems relatively easy to create your own "backwoods engineered" copy of it.

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post #4 of (permalink) Old 08-19-2004, 07:27 PM
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Re: ----Home made cold air intakes - SHOW ME

I sort-of have the same questions that you have concerning the intake for a TBI 258. Anyway, I never did come to a conclusion, but spent several days searching junkyards for intakes. I picked one up from a TBI chevy blazer, it would not fit because of my brake booster. Then I found this...



It would probably work. You would need to address the PCV vent return, find a filter other than the stock filter box, and find a place to locate it. Because of the brakes, the nozzle has to point toward the passenger side or toward the front.

By the way, this came out of a small 4.9L TBI caddy..

Mike
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