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Old 09-20-2010, 04:34 PM
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frost/core plug issue

So i was out driving my truck around now that i just got the tranny finished up, and about a mile away from home i start smelling coolant and hear a loud steaming noise. I pull over and to my surprise the frost plug next to the motor mount had a hole blown in it and it was blowing coolant out. I got it home and the thing was badly overheated. Im an idiot, yes i know. Im now wondering is there a way to change out the frost plug w/o pulling the motor? I wanted to rebuild it anyways but wanted to wait till december to start that project. Id like to get a few more months out of it before i rebuild... Any help would be appreciated!

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Old 09-20-2010, 04:35 PM
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its a 360 ci motor
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Old 09-20-2010, 05:35 PM
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Hi, There is a rubber plug w/a bolt, nut, & washer, you insert the plug then tighten the nut,
as you tighten the nut it forces the rubber to expand & seal the hole.
Good luck,
Rich
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Old 09-20-2010, 05:37 PM
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It's a freeze plug btw.
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Old 09-20-2010, 05:51 PM
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Quote:
Originally Posted by bigdog7373
It's a freeze plug btw.
Nope - a core plug and is used to remove casting sand. For it to be of any use as a "freeze" protection plug, it would literally have to cover the entire side of the engine. For whatever reason, it has always been called a freeze plug - but...

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Old 09-20-2010, 07:35 PM
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Core plugs, frost plugs, freeze plugs, soft plugs, welch plugs, expansion plugs, those danged rusted out leaking plugs- it's all good. Maybe not textbook accurate, but the parts man should get the drift.

AFA replacing a bad one, much depends on how much elbow room you have to work with.

Inside most engine compartments, there's precious little room to use for levering the soft plugs out from their holes.

A seal puller can be used if a hole or notch is made to hook the end into- but the tool is like a foot or more long.

You can in some cases, knock the plug into the water jacket Partially or completely), then grab an edge w/a channel lock and lever them out, but again- there's the problem of having or making enough room to do this in.

Like Richard said, there are rubber expansion plugs that can be used to replace a bad plug- they are tightened w/a nut/washer that causes the plug to expand, so if you can get the bad one out, you can use that to replace it- it will last a couple years- but if one has gone, the rest are not far behind, so get to them all ASAP...
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