Holes leading to CAM bearings

glynes
glynes Member
in HUDSON
I saw an earlier post about 1/4" holes in the block leading to the cam bearings. I have the same on my Terraplane 8 motor. Are these standard with straight 8 blocks and what do you use to plug them?

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  • Geoff
    Geoff Senior Contributor
    There are dowels  which locate the bearings.   The holes are plugged with a cup type plug.  
  • Geoff
    Geoff Senior Contributor
    And yes, all  H.E.T. engines have them. 
  • glynes
    glynes Member
    Thanks Geoff. Do you know where I can get these plugs?

  • glynes
    glynes Member
    Also you mention dowels. Do the dowels remain in the block to how the bearing position? And do you then put the plug over them? Thank you.
  • Geoff
    Geoff Senior Contributor
    yes, the dowels  are pushed into position into the holes in the bearings, with half staying in the block., and the plugs and installed after.  You should be able to get them form an engine rebuilding shop,
  • glynes
    glynes Member

    Hi Geoff - I tried to plug the holes with ultra silicone but they seem to leak. Are the plugs you are suggesting press in? I don't want threaded because I've already put the engine together and I'd be afraid to cut threads in the holes. Thanks.

  • Geoff
    Geoff Senior Contributor

    I am slightly amiss in saying saying "dowels". They are actually cup-shaped small welsh plugs. Impossible to get out unless you have the camshaft out unfortunatley.

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