212 Intake manifold freeze plug

[Deleted User]
[Deleted User]
edited November -1 in HUDSON
1940 Super Six. A bit of an over heating issue. Plan on removing all of the freeze plugs and flushing out the motor. When I removed the Intake manifold there is a hole behind it in the center of the block. The hole was sealed with gunk. Should there be a freeze plug there?



Thanks



Scot

Comments

  • Unknown
    Unknown
    On my 212 engine that is an opening to let water go under the carb and should be open , look at your intake manifold .
  • [Deleted User]
    [Deleted User]
    Thanks, that is what I was hoping. Now to continue to flush out the crud. The recess in the intake manifold was full of crud and the hole in the block was sealed with crud.



    Pulling out all of the expansion plugs and flush, flush, flush.



    Scot
  • Unknown
    Unknown
    From what your describeing it sounds like you need to STEAM_STEAM_STEAM !! And clean the radiator while your at the job . BUD
  • Lee ODell
    Lee ODell Senior Contributor
    Don't forget to flush the heater core. I had to flush and back flush my heater core a half dozen times to get clear water.



    Have a good day. Lee
  • [Deleted User]
    [Deleted User]
    37 Terraplane#2 wrote:
    STEAM_STEAM_STEAM !!



    Steam clean the water jacket?? That is something I don't know about. Can I do it myself?



    First step is to back flush the radiator and heater, hope not 12 times. We shall see.



    Thanks
  • Unknown
    Unknown
    Yes you can if you have access to or can rent a pressure steam cleaner . Not as good a job done as stripping the engine and tanking it but better than no effort at all and much better reults than just running water thru it . Keep at it till you get the block real hot from the steam and it will loosen up a lot of crud . Know any truckers that do their own work ? Most will have one . BUD
  • [Deleted User]
    [Deleted User]
    Got it, makes good sense.



    Now for the next question. On the left (generator) side of the motor is the incoming water line and water manifold. I am tempted to remove the water manifold along with all of the expansion plugs when I flush the motor with the steam pressure washer. Is that a good or a bad idea?



    Thanks



    Scot
  • Unknown
    Unknown
    Excelent idea . There is an inner baffle plate that has a bad habit of rusting out , it directs the water evenly towards the cylinders and could be part of your problem . PAY ATTENTION TO IT'S ORIENTATION . I made a replacement out of a piece of stainless steel I had laying around for mine . You also get at the "guts " of the block better . BUD
  • [Deleted User]
    [Deleted User]
    Okay I opened up all of the places I could and used a steam cleaner to flush the puppy out.



    Next question is replacing the expansion plugs. The motor came to me with the freeze plugs pointing out. I am used to them being put in concave so there is an indent. These were facing out so that they were flush with the engine case. Anyone know if the freeze plugs on a 212 should be an inny or an outy?



    Thanks
  • Unknown
    Unknown
    What I do with freeze plugs in general===if there is a seat for it to stop against put them as you said these were , concave in and beat enough to crush a tad to cause it to seal . NO SEAT= plug has to be a tad bigger than the hole so it will crush a tad to seal with the concave out , beat in till edge is flush . I always use some of that nasty black sealer whether it looks like it needs it or not . BUD
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