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Fresh water cooled Manifolds**

Discussion in 'Technical Discussion' started by Beauregard, Mar 15, 2015.

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  1. Beauregard, Mar 15, 2015
    #1
    Beauregard

    Beauregard New Member

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    Oct 12, 2014
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    Massachusetts
    I was skeptical about replacing my manifolds when changing out my risers, because I thought, "anti freeze is non corrosive, so why should I piss away the money."

    That changed my mind when I pulled one off and found that water seeped into the exhaust port exposed to the engine valve. (See Pictures of pulled manifold). Now if I would have let this go, I may as well lost my port engine from corrosion or hydrolock.

    The moral to this story/ lesson, is to change your FWC manifolds once a decade, EVEN though they are fresh water cooled. I hope that this was useful for you.

    image1.JPG image2.JPG image3.JPG
  2. Capt Ralph, Mar 15, 2015
    #2
    Capt Ralph

    Capt Ralph Senior Member

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    Satsuma, FL
    Was there a rust/water trail from where the riser bolts on?
  3. Beauregard, Mar 16, 2015
    #3
    Beauregard

    Beauregard New Member

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    No, didn't see any residual signs of rust trails.
  4. Capt Ralph, Mar 16, 2015
    #4
    Capt Ralph

    Capt Ralph Senior Member

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    Messages:
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    Location:
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    Your pictures represent what I usually see when the riser / manifold gasket is leaking.
    You are correct, any exhaust should be closely examined often. 10 years later is a good even for a FWC log. It may have gone longer but why take any risk. It gave 10 years of good service. RIP

    B O A T; Bust Out Another Thou$and.

    ,rc