Header Injection, anybody use these?
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Header Injection, anybody use these?

  1. #1
    I'm No Expert Shaun's Avatar
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    Default Header Injection, anybody use these?

    Wondering if anybody used these and what kind of experience they had with them? My boats headers i think are running a little more wet than they should be, i'm just looking to get it perfect. I'm thinking about buying a set of these and just drilling them out if i need more flow.

    hole is 0.125"




    Please dont say install a gate/ball valve, i know thats what alot of you do, i'm not looking to go that route.

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    Senior Member propless's Avatar
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    If those go on the water lines to the headers, Yes, I use something very similar. I have never heard of anyone else running them . When I bought my headers (in 2001) I was told to do it that way by one of the local old timers, have never had a problem, and they still look great !! I just check them before I go out to make sure nothing plugged up the small holes. As far as the hole size I don't remember what size I ended up with but my pump is a Jacuzzi YJ and doesn't make as much pressure as a Berkeley style pump.

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    I'm No Expert Shaun's Avatar
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    They go into the primary feed of the water injection lines for each header.

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    Senior Member propless's Avatar
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    Yep, that's where mine are too. I just took a cordless drill and the set of drill bits with me to the lake and kept drilling them out until everything looked right. As I said they have been that way since 2001 and here's a shot from a this year (still looking good) .


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    Sit N' Spin Jetaholic's Avatar
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    I've gotta say Propless's setup is what I would call perfect. You see absolutely nothing coming out of the pipes while cruising. When you really get on the throttle you'll see nothing but a big puff of steam come out and that's it. And his headers are 5 years old with only the area between the heads and the weephole blued.

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    Resident Ford Nut Sleeper CP's Avatar
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    Have used something like those for about 18 yrs on the CP. Work just fine.

    Sleeper CP

    "Dark Sarcasm"
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    fast is the other half.
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    Senior Member Brendellajet's Avatar
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    You could always save your money, weld the holes up on the header fittings and re-drill with a much smaller hole...

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    I'm No Expert Shaun's Avatar
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    Quote Originally Posted by Brendellajet View Post
    You could always save your money, weld the holes up on the header fittings and re-drill with a much smaller hole...
    Those restrictors i posted are like 8 bucks each

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    Senior Member Brendellajet's Avatar
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    Sorry, I just try to fix things that I can for free rather than throwing more money at it...

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    I'm No Expert Shaun's Avatar
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    Quote Originally Posted by Brendellajet View Post
    Sorry, I just try to fix things that I can for free rather than throwing more money at it...
    I'll agree with that!

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    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by Brendellajet View Post
    You could always save your money, weld the holes up on the header fittings and re-drill with a much smaller hole...
    Actually what I did and (several others)...tap the header/fitting hole for a small brass screw, grind off the head and drill the size needed. Works great!
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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    Rollin With Fink fasterthanu's Avatar
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    I used holley jets in a few boats, just tap the hole and you can try various sizes....

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    Senior Member Futs's Avatar
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    Or just run them dry and be done with all your headaches....

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    I'm No Expert Shaun's Avatar
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    rex sells jets in different sizes for these too, says to drill and tap them for the jet size. He has 3 different sizes. I'm going to order the -8 restrictor above, we'll see how well it works.

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