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Block heater removal


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How do they come out? I've got the nuts off, but it won't budge. I soaked it with WD, hammered on it, heated it up and did it all again, nothing. My manual has nothing about them. The studs have a slot, but neither move, and I don't want the wreck them any more then I already have. Any help?

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  • 5 years later...

 Would I be correct to assume that once you got it out you could have replaced it with a regular core (Welsh) plug?  Or does the hole in the block look different once you get the block heater out?  I'd like to remove mine and replace it with a regular plug.  BTW. ...was it 110volts, 240 volts or 6 volt going to the heater?

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Each heater  I have removed came out in pieces.  Fortunately we have no need for block heaters where I am, so I replaced  them with  new core plugs .... P14.... I think the number is. 1 5/8.

Don't use the more familiar cup type.

The best way to put these in is to put the plug in the  hole, put a hammer or broad drift over the plug then strike the hammer with another which tends to flatten the plug, making it expand around its circumference.   

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oddly, the block heater that came in my truck was a special head bolt....with a heating element...I should find it and post pics

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