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Thread: Intake manifolds

  1. #1

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    Default Intake manifolds

    How much power can one expect to pick up with a Johnp intake vs Ford racing and where could I get my hands on either

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    HP.
    JohnP: approx 10hp with 65mm tb
    FR: same

    Availability.
    JohnP: good luck
    FR: same

    Is it worth it?
    JohnP: if you get it cheap
    FR: same

    Boosting?
    JohnP: Will crack
    FR: Will hold up to boost
    Quote Originally Posted by david gettle View Post
    I had a claim last year because I hit a frozen pile of manure


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    Quote Originally Posted by ChillinZX View Post
    HP.
    JohnP: approx 10hp with 65mm tb
    FR: same

    Availability.
    JohnP: good luck
    FR: same

    Is it worth it?
    JohnP: if you get it cheap
    FR: same

    Boosting?
    JohnP: Will crack
    FR: Will hold up to boost
    JohnP won't crack , the backfire valve in the bottom will blow out or boost will blow by the 'O'rings .

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    YAH!

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    2000 zx2 s/r stock RIP

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    You haz no gifts, you do now. lolz - rascal Thanks for your help! - Big Mizz 

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    Lets not forget a JohnP weighs less than the factory manifold. The Ford Racing one weighs a good bit more.

    Another option is the SVT Focus inlet manifold
    Found the limits of factory internals. Pictures here.

    2000 ZX2 - Built engine (Eagle Rods, JE Pistons, block bored to 85.5mm, 2mm oversize valves, Forged oil pump gears), Garrett GTX2863R turbo, 80 lb/hr injectors, flex fuel, Megasquirt 3 EMS, Celica ST185 radiator, 3" exhaust. Other mods too, check out my build thread for a full listing.



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    Is JohnP done making modifying IMs?

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    JohnP is like 87 years old and hasn't modified IMs for half a decade, at least lol.
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    Quote Originally Posted by ChillinZX View Post
    If you're talking about the slave cylinder "cock", you can play with that thing all day long and it will not get stiff.

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    2 yrs ago this was posted.
    Just wondering. I bet he's not 87!

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    I was only saying it would crack because it was made of plastic. How much boost can a ported plastic intake manifold handle?

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    Not enough to beat Dom...danger20to20manifold.jpg

  11. #11

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    Oh yeah, the random floor pan bolts will fall off before the intake manifold blows, we are ok.

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    1 running Ford out of 5 isn't bad, right?

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