Turbo project manifolds.
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Turbo project manifolds.

  1. #1
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    Default Turbo project manifolds.

    Wondering what ya'll think about these for my twin turbo 555 .
    I need something water jacketed as it's going in an enclosed engine compartment.




    Hard to make out in the pictures but they have individual runners up until the outlet which is 2.75" diameter.




    They also have a "dry" riser joint which makes it easier for me to make an adapter plate to mount the turbos ..



    Doug
    Last edited by Boatally Insane; 01-13-2013 at 05:37 PM.
    Some call it A.D.D. I call it "multi tasking"

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    Senior Member steveo143's Avatar
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    Those would work fine. Are the aluminum or cast iron? There are several aftermarket aluminum ones available that are a little better flowing.
    steveo143 AKA DiMarco 21 II



    Now totally Green on E-85, saving the world one ear of corn at a time!
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    Or Seth, either one Budweiser's Avatar
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    Very similar to the route I plan on taking. Keep us posted as it comes together. I'm very interested in seeing and reading about your progress.

    How do you plan to cool the exhaust turbine housing for "under the hatch" operation?

    Good luck!

    -Seth-
    Last edited by Budweiser; 10-21-2012 at 07:24 PM.

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    They're the early aluminum 496 mag HO manifolds.

    The inlet ports are 1 3/4 square....


    I really like the Dana manifolds but not sure if they're worth the $$

    Wouldn't the turbo itself would be a bigger restriction than the manifold anyway ?

    Quote Originally Posted by Budweiser View Post
    How do you plan to cool the exhaust turbine housing for "under the hatch" operation?

    Good luck!

    -Seth-
    I was planning on running the water from the manifolds through a heat shield over the turbine..


    Doug
    Last edited by Boatally Insane; 10-21-2012 at 07:43 PM.
    Some call it A.D.D. I call it "multi tasking"

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    LP-25.com Infomaniac's Avatar
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    I have a small block project and plan on doing the same thing with Eddie Marine manifolds. I'm just going to put a blanket on the turbine housing and header wrap the exhaust pipes and waste gate pipes where they marry in.

    This boat. It runs low 90's with a bit over 500 HP. We owned it 20 years ago, sold it for a bigger boat. Kids are gone now and we bought it back for the wife and I.
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    Senior Member Fireguy's Avatar
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    Subscribing to this thread. I have the same project about to start also.

    What turbos are you going with?

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Boatally Insane View Post
    Wondering what ya'll think about these for my twin turbo 555 .
    I need something water jacketed as it's going in an enclosed engine compartment


    They also have a "dry" riser joint which makes it easier for me to make an adapter plate to mount the turbos ..



    Doug
    The problem I see with those is there is no water in the runners where the exhaust exits the heads? Might end up with some holes blown in the runners?

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    Boat Nut sleekcrafter's Avatar
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    Always thought these would be perfect for a turbo project..... maybe not for max effort build, but exellent for a faster driver.

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    Quote Originally Posted by Fireguy View Post
    Subscribing to this thread. I have the same project about to start also.

    What turbos are you going with?
    Most likely Borg Warner S400's. Not sure exactly which one yet though..
    https://turbodaves.com/S400SX_Series.html



    Quote Originally Posted by obnoxious001 View Post
    The problem I see with those is there is no water in the runners where the exhaust exits the heads? Might end up with some holes blown in the runners?
    .. Hadn't thought of that.. Especially with the hotter exhaust temps of a blown motor..
    I know Merc discontinued the aluminum ones on those engines and went to cast iron though I'm not sure why...

    I wonder if the Gil manifolds would be better.. Looks like they have the water inlets right on the bottom. and used ones seem pretty reasonably priced.




    Quote Originally Posted by sleekcrafter View Post
    Always thought these would be perfect for a turbo project..... maybe not for max effort build, but exellent for a faster driver.
    I'll have to check in to those a little more. Might be a much better choice.. Though they look expensive..



    Thanks,
    Doug
    Last edited by Boatally Insane; 10-23-2012 at 07:11 AM.
    Some call it A.D.D. I call it "multi tasking"

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    Highaboosta Unchained's Avatar
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    Quote Originally Posted by Boatally Insane View Post
    Most likely Borg Warner S400's. Not sure exactly which one yet though..
    https://turbodaves.com/S400SX_Series.html

    Thanks, Doug
    That's a lot of turbo, they're good for 1000 hp each. Is your engine and outdrive capable of that ?

    Give some careful consideration of what your goals are up front or you may be overwhelmed.
    I was

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    Quote Originally Posted by Unchained View Post
    That's a lot of turbo, they're good for 1000 hp each. Is your engine and outdrive capable of that ?

    Give some careful consideration of what your goals are up front or you may be overwhelmed.
    I was
    I was looking at the S400SX3 's but you're right, I may have to drop down to the S300SX3 .
    I'll let the turbo "experts" decide that one...


    Doug
    Some call it A.D.D. I call it "multi tasking"

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    ....Came across another set of manifolds.....

    What do ya'll think of theese ?




















    Doug
    Some call it A.D.D. I call it "multi tasking"

  15. #13
    Senior Member steveo143's Avatar
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    Those are early Drake manifolds later made by Keith Eickert. That top flange is a dominator carb gasket size. I am using a set of those on my 622 cu. in. BBC twin turbo build with twin 91mm turbos.
    steveo143 AKA DiMarco 21 II



    Now totally Green on E-85, saving the world one ear of corn at a time!
    RIP Davey B and Denis and Chris and Bob GN7

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