Anyone with through transom Exhaust ever??
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Anyone with through transom Exhaust ever??

  1. #1
    Senior Member cave's Avatar
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    Default Anyone with through transom Exhaust ever??

    Anyone ever burn a base ball size hole in them? I burnt 2 of them up. Both on the same side while testing the boat out this weekend.

    I think its a flow of least resistance deal.
    Notice how the lines are run from the thermo housing. In this pic, the lines are run incorrectly and have been corrected. But the lines that go vertical are to the right side. I think the water is flowing to the line that is mounted to the side. That would be the least restricted way to flow. Now I know that this was a problem before I bought the boat because the same exhaust hose was burnt in the same spot when I picked up the boat. This hose aint cheap. Anyone ever have a problem like this? What fixed it . Other than going OT
    Takin it home

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    Lord of the Drinks Havasu Hangin's Avatar
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    Thumbs up

    The rubber exhaust hose is burning? You could ditch it and go stainless. Much safer, but it's expensive.
    "Warming the globe...16 cylinders at a time."

    Quote Originally Posted by Rexone View Post
    Perhaps I'm gay...

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    Senior Member H20MOFO's Avatar
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    Stainless like a flexible braided type or solid, I didn't thing solid was an option? We are talking the hose that hooks the collector to the tips right? I did that once but it was because I went from ot's to tt's and didn't realize I needed to re-route my dump line into the collectors.
    Another Hot Boat refugee

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    Senior Member H20MOFO's Avatar
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    Stainless like a flexible braided type or solid, I didn't think solid was an option? We are talking the hose that hooks the collector to the tips right? I did that once but it was because I went from ot's to tt's and didn't realize I needed to re-route my dump line into the collectors
    Another Hot Boat refugee

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    Senior Member cave's Avatar
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    That would be stellar to go Stainless. But not an option at this point. Someday I will upgrade to Lightnings or Danas's Torqers. I like the look of the Dana's but there again, Not at this point.
    That is an option HH. Just not at this point.

    Thats the ones MOFO... The Soft wall Rubber hose. Stainless Solids are High dollar but freaking nice.
    Takin it home

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    Senior Member H20MOFO's Avatar
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    I'm still a little fuzzy on the stainless deal(seriously) are we talking just stainless pipe/tube, if so I need a better imagination, or a lot of help.lol I'll try to put up a pic of why I'm all ears here.
    Another Hot Boat refugee

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    21 Daytona Outlaw's Avatar
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    .Cave if your burning the hose you have a bigger problem than the hose, those exhaust need water flow
    all the time. if your running somkind of thermostat
    it must bypass the engine and feed the exhaust.

    I couldn't figure out you water flow from the pic.
    could you post the cooling system diagram.

    looking at the pic again, I'm not sure you have your thermostat housing plumbed correctly. let me find my instructions for it.

    Kreg give me a call or email me and I'll help you fix your alignment problem
    Last edited by Outlaw; 12-08-2008 at 08:51 PM.
    #55

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    Member paradigm shift's Avatar
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    Quote Originally Posted by Outlaw View Post
    Cave if your burning the hose you have a bigger problem than the hose, those exhaust need water flow
    all the time. if your running somkind of thermostat
    it must bypass the engine and feed the exhaust.

    I couldn't figure out you water flow from the pic.
    could you post the cooling system diagram
    I have to agree and I think we need to know what size hose and fittings are for the cooling system. All the hoses I have seen burnt are from not enough water. Usually from a bad water pump but I do not think that is your problem.

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    21 Daytona Outlaw's Avatar
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    Bingo swap your lines on the thermostat housing... your only getting a very small amout of water to the exhaust until the thermostat opens

    #55

  12. #10
    Senior Member H20MOFO's Avatar
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    Yep that's no a good feeling when your in the middle of a lake and your exaust goes bye,bye,lol. Fwiw my exaust lined up fairly well until I went tall block, now I'm high and wide. Sorry I'll shut up now.
    Another Hot Boat refugee

  13. #11
    Lord of the Drinks Havasu Hangin's Avatar
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    Arrow

    I have stainless out the back. Rubber needs alot of water to keep it cool, but stainless can get by with very little. In fact, I restrict water to mine (to help build some pressure in the block and prevent reversion)- most of my water goes out the dumps.

    Any rubber hose near the water line on the transom is not good- boats can sink that way. Another alternative is aluminum elbows connected with very short rubber hose runs. The bends in the elbow will take most of the heat.

    Not expensive at all.
    "Warming the globe...16 cylinders at a time."

    Quote Originally Posted by Rexone View Post
    Perhaps I'm gay...

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    Senior Member cruzer's Avatar
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    Cave,

    I have a bit of 4" exhaust hose if you need it. And, I can help get your water routing fixed up. Let me know if you need help.
    Cruzer
    21 Eliminator Daytona. Blown 540

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    21 Daytona Outlaw's Avatar
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    Quote Originally Posted by cruzer View Post
    Cave,

    I have a bit of 4" exhaust hose if you need it. And, I can help get your water routing fixed up. Let me know if you need help.
    he's referring to the hose between the manifold and riser i believe
    #55

  16. #14
    Senior Member VDRIVERACING's Avatar
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    I ran the 4" hose with water injection headers, and about 2" of the hose was exposed to the exhaust heat. At slow speeds it was OK, but if I ran hard that blower puts out a lot of heat and cooked that hose.

    You should have solid metal pipe of some kind for the exhaust. The rubber hose--even the stuff that's made for exhaust--should only connect the metal parts with just a tiny bit of exposure to the exhaust gases, along with a continuous flow of water.

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