Best way to Clean Out Water Jackets

forjack842
forjack842 Expert Adviser
edited November -1 in HUDSON
29 Hudson Sedan - Arrived last week.

Pulled thermostat sender and fittings. Found about 3/8" of crud using finger method. Screwdriver lifted a bunch of brown soft mud probably loosened by new antifreeze put in about 6 months earlier by seller.

Honeycomb radiator disconnected - unknow internal state at this point.

Best options beside pulling head.



Freeze plug removal with high pressure washer?

Hot water hose down upper ports?



Thanks

Jack

Comments

  • SuperDave
    SuperDave Senior Contributor
    All of the above.. and you might try a short piece of speedometer cable in an electric drill ..you will be able to reach into some really remote parts of the engine. After all the cleaning, put a piece of nylon stocking across the output hose to the radiator to act as a filter to pick up the stuff that is now in circulation. This will require removal and cleaning a few times. but may prevent radiator clogging.
  • forjack842
    forjack842 Expert Adviser
    Great! I believe a slide hammer for the side freeze plugs. Any issues with the freeze plugs on this engine. I believe I saw several references to a Napa replacement plug.





    Also thinking of initially using a wet/dry shop vac to try and pickup as much as possible so it doesn't all head down into the water pump.



    If I was to pull the head who makes the best upper gasket set for this engine.; Olson?
  • [Deleted User]
    [Deleted User]
    forjack842 wrote:
    Great! I believe a slide hammer for the side freeze plugs. Any issues with the freeze plugs on this engine. I believe I saw several references to a Napa replacement plug.





    Also thinking of initially using a wet/dry shop vac to try and pickup as much as possible so it doesn't all head down into the water pump.



    If I was to pull the head who makes the best upper gasket set for this engine.; Olson?
    Contact Dale Cooper at http://www.hudsonmotorcarco.com he has listing for what you need. Walt.
  • MikeWA
    MikeWA Senior Contributor
    forjack842 wrote:
    If I was to pull the head who makes the best upper gasket set for this engine.; Olson?





    For head gasket, also check with the Maas's- www dot 21stcenturyhudson dot net. Your looking for the best gasket, and ironically, I think it's Best brand that they carry. Supposedly cures all the problems of leaking gaskets with finicky aluminum heads.
  • forjack842
    forjack842 Expert Adviser
    All,

    I'm going to try alittle different approach first. I've picked up a 1/2 hp pump and a 5 plating filter socks (ebay 220602025439) 10 micron. I'm going to mock up a reverse flush setup that will run heated antifreeze (~ 150- 200 degrees) through the engine only at a pretty good flow rate continuely for days. Since the mud was loose I'm hoping the more rapid flow rate will draw alot of it out. It'll take about a week for all parts to arrive then I'll try it. I'll also do the radiator reversed and upside down after an initial drain right side up .

    The parts cost is about equal to the head and manifold gaskets. Might prove cost effective.

    Jack
  • Aaron D. IL
    Aaron D. IL Senior Contributor
    when you got sludge and stuff like you have no flush solution will ususally get it all. I've used a power washer in the water chambers on other engines I've had. This is assuming you can get at the freeze plugs.
  • forjack842
    forjack842 Expert Adviser
    Morning Aaron,

    Freeze plug removal with high pressure wash was my initial thought.

    I'm going to try the high pressure back wash for a week straight and se what comes out. I expect not to get it all but alot will reduce the unequal heating. I've not run this engine yet myself so I have no idea if the block is cracked or there are other issues. I just don't want to start digging into the engine, button it back up then find I have to take it apart again for another major problem.
  • TwinH
    TwinH Senior Contributor
    I like this stuff,available at your local hardware store.

    www.rustaid.com
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