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Old 08-04-2009, 08:16 PM   #1
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Duratec Intake Manifold Maximum Boost?

I'm in the process of getting everything setup and ready for my engine builder to build my engine.

I'm trying to save money as much as possible and was wondering what is the maximum boost the stock duratec 2.3L intake mani can handle? I don't want it breaking apart or anything, but if i can get 17psi out of it safely with the gt28r, ill leave it in for now and save $$ for the cossie..


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Old 08-04-2009, 08:57 PM   #2
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i know it isnt a duratec manifold but i ran 24 psi though the composite zetec manifold with out ever having a problem... i say give it a shot.
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Old 08-04-2009, 10:27 PM   #3
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I know your good to 22 to 24 , wouldnt shock me to see 30

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Old 08-04-2009, 11:03 PM   #4
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I've seen the throttle body blow apart at 13psi. Atleast upgrade the TB to a metal one.
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Old 08-05-2009, 04:45 AM   #5
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That mold-injected plastic is some serious stuff. Should be good to atleast what you were looking for. As for a TB, couldn't hurt to get rid of the plastic one for a more durable metal piece.
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Old 08-05-2009, 07:34 AM   #6
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Originally Posted by Mave View Post
I've seen the throttle body blow apart at 13psi. Atleast upgrade the TB to a metal one.
Then there was something wrong with it already , I have hundreds of stock plastic ones running around and this is the first I have seen any one post about breaking ever anywhere

The TB has less surface area and a clamp around the hose to help hold it togather , it had to be broke before boost

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Old 08-05-2009, 08:51 AM   #7
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yeah i was gonna say i know fswerks uses stock tb with their builds and they were pushing 26psi and 396whp with the stc car.

and thats good to know that it wont break. i need to save $$ and the cossie IM is $700. ill get it later on, just not right now.
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