Results 1 to 11 of 11

Thread: Exhaust Riser Question

  1. #1
    Member Yukoner's Avatar
    Join Date
    Aug 2007
    Location
    Whitehorse Yukon
    Posts
    1,343

    Default Exhaust Riser Question

    So on the exhaust risers of my and others Kodiak engines, there are multiple plugs for the hoses off the HX. On my carb'd 350, there is only one hoes per side, yet multiple brass plugs, and some other Kodiaks use more of these tappimgs. What's the deal? Is it to accommodate more cooling on the higher performance engines?
    Never wrestle with a pig.
    you both get dirty;
    the Pig likes it.

  2. #2
    Member Music Man's Avatar
    Join Date
    Aug 2006
    Location
    ANC
    Posts
    1,243

    Default

    Quote Originally Posted by Yukoner View Post
    So on the exhaust risers of my and others Kodiak engines, there are multiple plugs for the hoses off the HX. On my carb'd 350, there is only one hoes per side, yet multiple brass plugs, and some other Kodiaks use more of these tappimgs. What's the deal? Is it to accommodate more cooling on the higher performance engines?
    Wish I could get one per side. Is that front to back or top to bottom?
    When seconds count, the cops are just minutes away.
    '08 24' HCM Granite HD "River Dog"

  3. #3
    Member
    Join Date
    Oct 2008
    Location
    Anchorage
    Posts
    401

    Default

    On the risers or the manifolds? On my KEM the risers i think only have one port to hook up raw water. On the manifolds there are other ports other than the ones that coolant flows through. I have wondered this my self. Off the top of my head I wonder if it is to get rid of the sand when the manifolds are casted??

  4. #4
    Sponsor potbuilder's Avatar
    Join Date
    Apr 2006
    Location
    Palmer
    Posts
    4,229

    Default

    freeze plugs ??

    Alaska Shrimp Pots

    Rigid & Folding Shrimp & Crab Pots
    Electra Dyne Pot Haulers
    Ropes, Buoys, Bait
    alaskashrimppots.com
    akshrimppots@mtaonline.net
    907 775 1692

  5. #5
    Member
    Join Date
    Oct 2008
    Location
    Anchorage
    Posts
    401

    Default

    Steve mine are treaded.

  6. #6
    Member Yukoner's Avatar
    Join Date
    Aug 2007
    Location
    Whitehorse Yukon
    Posts
    1,343

    Default

    Quote Originally Posted by Music Man View Post
    Wish I could get one per side. Is that front to back or top to bottom?
    Uh, holes. I meant holes. Or maybe that was a Freudian slip...
    Regardless, I should have been more specific. I just grouped the whole piece as the riser. So yeah, one threaded inlet on the riser, and 2 on the manifold. Mine just uses one inlet, but I see other, larger engines using more?? I have also seen a 350 with a short hose joing the two manifold inlets? What gives?
    Never wrestle with a pig.
    you both get dirty;
    the Pig likes it.

  7. #7
    Member Yukoner's Avatar
    Join Date
    Aug 2007
    Location
    Whitehorse Yukon
    Posts
    1,343

    Default

    Heres my engine.
    Attached Images Attached Images
    Never wrestle with a pig.
    you both get dirty;
    the Pig likes it.

  8. #8

    Default

    On the risers the plugs are probably for motors requiring O2 senor's

  9. #9
    Premium Member kasilofchrisn's Avatar
    Join Date
    Jan 2009
    Location
    Central Kenai Peninsula
    Posts
    4,886

    Default

    Could you use these threaded plugs for adding zinc anodes?
    Something like these? http://www.rotometals.com/Pencil-Engine-Zincs-s/46.htm
    "The closer I get to nature the farther I am from idiots"

    "Fishing and Hunting are only an addiction if you're trying to quit"

  10. #10
    Member
    Join Date
    Apr 2006
    Location
    Anchorage
    Posts
    3,246

    Default

    Yes, as long as you know what your doing such as make sure you do not have to much anode, and all parts that need protection are protected.

  11. #11
    Member
    Join Date
    Mar 2008
    Location
    Juneau, Alaska
    Posts
    38

    Default

    The risers aren't necessarily specific to your boat or engine. So different engines/manufactures do the plumbing differently. My Mercruiser 350 has 3 different riser to manifold gaskets depending on how the engine is configured. My I/O FWC is plumbed very different from yours for instance on mine those plugs on the front of the risers have antifreeze in them and lines going to the heat exchanger.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •