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  1. #1

    Default Run only salt water

    Can anyone tell me about a caustic solution used to run through motors run in salt water?

  2. #2
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    4,658

    Default Re: Run only salt water

    It is not caustic but periodically run it in a barrel with saltaway in it. If you flush it with fresh water after each use you should never have to chemical flush a engine. Even lake/river water is loaded with silt and minerals flush it either with themuffs or in a barrel until the thermostat opens and disconnect the fuel line and let it run out of fuel. Then your all set for the next outing. Always store it in the running position so it drain completely and check/change the gear oil to protect it from freezing.
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  3. #3
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    2,855

    Default Re: Run only salt water

    Saltaway....
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  4. #4
    Join Date
    Nov 2011
    Posts
    1,765

    Default Re: Run only salt water

    Fresh water is the solvent for dissolving and flushing away salt. As for caustic or acid chemicals never do it. Well, maybe in an attempt to salvage an otherwise eaten-up motor with nothing to loose.

  5. #5

    Default Re: Run only salt water

    Thank you

  6. #6

    Default Re: Run only salt water

    I bought a 1960 Johnsoin 3 H.P. this past January. It had a broken prop and skeg. I got a used gear case and 3 blade prop. When I tore down the gear case there was no gear lube to be found in the case but there was a bunch of corrosion and what looked like old wheel bearing grease on the inside. Do you suppose someone didn't have any gear lube and thought wheel bearing grease was OK? Anyway, I poured some muriatic acid into the gear case to clean it up. I was run in salt water before. I didn't keep the acid in the gear case for long at all - maybe 5 minutes, and then flushed it out with baking soda and water. I then decided to do the same thing to the cylinder block. I removed the cylinder head and worked in the kitchen sink (when my significant other was not home). I now have a very clean little 58 year old engine. I didn't and you shouldn't leave the acid in there too long (like overnight) because you run the risk of turning your engine into junk.

  7. #7
    Join Date
    Nov 2011
    Posts
    1,765

    Default Re: Run only salt water

    I don't suppose you noticed the reddish coating inside the cylinder block? That was put there to prevent corrosion. I would not put anything in there that might endanger or remove that coating.

  8. #8

    Default Re: Run only salt water

    Quote Originally Posted by fdrgator View Post
    I don't suppose you noticed the reddish coating inside the cylinder block? That was put there to prevent corrosion. I would not put anything in there that might endanger or remove that coating.
    I do recall a reddish coating on the recesses in the cylinder head but none inside of the water jacket on the cylinder block. Hmmm. Too soon old, too late smart. Thanks for the info though. I'll remember that but there's little chance I'll refurbish another outboard in this lifetime.

  9. #9

    Default Re: Run only salt water

    I haven't done anything to it. I got the caustic idea from something I read on this forum from someone asking about cleaning with caustic solution. I plan to use saltaway.

  10. #10

    Default Re: Run only salt water

    Quote Originally Posted by jiwatson View Post
    I haven't done anything to it. I got the caustic idea from something I read on this forum from someone asking about cleaning with caustic solution. I plan to use saltaway.
    That's a safe bet. I didn't know about Saltaway.

  11. #11
    Join Date
    Apr 2010
    Posts
    4,046

    Default Re: Run only salt water

    Edit....

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