65 Small Block with Green Fluid flowing from Eng? - NCRS Discussion Boards

65 Small Block with Green Fluid flowing from Eng?

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  • Al #36802

    65 Small Block with Green Fluid flowing from Eng?

    Hello,
    I have been mostly watching the posts to this board and reading to gain information as questions came up on my 65. Car has been off the road 20 years and I started a while ago to evaluate the systems and start rebuilding, brakes, etc. Needs a lot of work. Havent been able to touch a thing in the last 3 months or so due to other commitments. Last night I was coming into the house and there was green fluid flowing out from under the garage door where the 65 sits. Opened the door and it was like a faucet was open with what looks like cooling system fluid flowing pretty fast. Tried to look while cleaning and it seemed to be coming from toward the back end of the oil pan not near the radiator where I would have expected. I thought it may have been a small animal got in and chewed through a hose. Eventually it slowed down and I was able to get under the car to try to see where it was coming from- it seemed it was dripping from the driver side motor mount. Radiator and hoses all looked dry. I am sure it just looked like a lot of fluid because it spread all over. Couldnt see anything that looked like it would have sprung a leak to cause the flow. Suppose the fluid could have come from somewhere else and traversed the engine to get to where it dripped to the floor but I couldnt see a lot of wetness to indicate such a path, although it was dark. Temperature around 42 degrees so didnt think freezing would be the issue. Does anyone have any suggestions on what to look for or where to begin assessing what sprang the leak? Any similar experiences or known issues that would cause such a thing? Why would it happen with the car just sitting for a period? Any thoughts appreciated.
    Thanks
    Al
  • Mike M.
    NCRS Past President
    • May 31, 1974
    • 8365

    #2
    Re: 65 Small Block with Green Fluid flowing from E

    check the soft(freeze) plugs on the side of the case.probably just corroded thru, wouldn't have poped one @ 42 degrees. ,mike

    Comment

    • Loren L.
      Extremely Frequent Poster
      • April 30, 1976
      • 4104

      #3
      Might also remove the front shield on

      the lower bell to see if it is one of the freeze plugs at the back of the motor.

      Comment

      • Tracy C.
        Expired
        • July 31, 2003
        • 2739

        #4
        Re: 65 Small Block with Green Fluid flowing from E

        Al,

        There is a "Freeze Plug" directly under the motor mount. As already suggested by others, I suspect this one has become a victim of corrosion.

        The good news is, it can be fixed....

        The bad news is because of it's location, you will likely need to pull the engine at least part way to replace it.

        If you plan to keep the car, I would recommend replacing all of the freeze plugs. (there are about six or eight of these) To do this, you will need to pull the engine completely out. Rational behind this is if one has bit the dust, the others are not too far behind.

        good luck,
        tc

        Comment

        • Chuck S.
          Expired
          • April 1, 1992
          • 4668

          #5
          Probably 38 Year Old Plugs...

          About time they were replaced.

          A great originality corner to cut is to forget those zinc plated steel freeze plugs the General sells, and install after-market brass freeze plugs. The after-market plugs will probably have some kind of logo or text that will betray them as non-original, but you won't have to worry about corrosion again. But, if you are concerned about someone crawling under your car and reading your freeze plugs, then you'll have to address that issue.

          Comment

          • Al #36802

            #6
            Thanks

            Hello All
            Thanks for the input. I will get the engine pulled and try to locate the bad plug. Appreciate the thoughts and the hope that it isnt something really bad and can be repaired fairly easily. Got a little nervous that it wasnt something I could readily see and the spontaneous nature of the fluid flow was odd. Will let you know what I find and thanks for the input. Was going to take the engine out later but now is as good a time as any.
            Thanks
            Al

            Comment

            • mikemccagh

              #7
              Re: Probably 38 Year Old Plugs...

              Chuck: Moroso sells a brass soft-freeze plug that lacks a mfgr logo so you can have your cake and eat it too. mike

              Comment

              • Dick W.
                Former NCRS Director Region IV
                • June 30, 1985
                • 10483

                #8
                Re: Probably 38 Year Old Plugs...

                I don't think that I would worry about which plug is leaking, at this age they all have to be about gone. Just replace them all
                Dick Whittington

                Comment

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