small block H2O pump bolts into water jackets

Heating, Cooling & AC

  1. YY1

    YY1 Well-Known Member

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    Hey guys, I looked through six pages of search results and cant find it.

    I have a 67 FSM, a Dakota Haynes and three Motor's manuals plus 12 pages of googling.

    Nothing.

    I swear I've seen it many times.

    Anyway, the first time I did the water pump on the Dakota, I put gasket sealer on all the bolts.

    This time I only put it on the two outboard ones.

    After two weeks, I've got a small leak.

    Hard to tell exactly where it's coming from.

    Funny, though, it's way over in back of the PS pump.

    Water is running off the block in the block to head area.

    Hope it's not a head gasket.
     
  2. RustyRatRod

    RustyRatRod Well-Known Member

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    There are FOUR main bolts to put sealer on. There are two on each side of each water port on each side of the block. Those are the main ones to put sealant on.......but I always put it on every damned one because they have a habit of rusting regardless. Water will migrate into the holes going through the timing cover and rust and corrode the bolts directly to the aluminum cover for the entire length of those holes.....that's over 2". PITA when that happens.
     
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    • YY1

      YY1 Well-Known Member

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      Knew I could count on you.

      Think I might have found the problem...fingers crossed.
       
    • YY1

      YY1 Well-Known Member

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      Well, I noticed that the tube for the heater hose seemed loose.

      There was some rusty water around the place where it goes in as well.

      After analyzing the angles, it could have been shooting a fine stream back towards the head, and that could account for what I saw.

      I pulled the tube, and there was a big burr on the flimsy O ring.

      I never cared for that design. WTF was the matter with the odl design?

      Anyway, went to the parts store and the only thing they had was another of the same.
      I'd bet a ring with flatted sides would do a better job.

      Put it in, and it slipped all the way.
      Bitch to pull back out, and it ripped the ring- !@#$%^&*()(*&^%$!!

      I'll try NAPA tomorrow. It's their pump.

      I sure hope that's what it is. What a crappy, newly introduced, point of failure.
      All the pressure of that cooling system on a 1/64 O ring.

      - - - Updated - - -

      If I was sure this pump was gonna be good for more than 10K miles, I'd tap the heater connection and put in a nipple.
       
    • YY1

      YY1 Well-Known Member

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      Geeze guys, I thought we were friends...

      Wanna know what it was?

      Expansion plug. Front of driver side head.

      Put in a brass one and heat cycled it.

      That dang heater nipple tube WAS in the way of removing the PS bracket- grrrrr.

      Hope more in "other" places aren't on the way soon.

      I have been fighting a rusty coolant issue that won't seem to go away.
       
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