Kaiser Frazer Owners Club Forum
General Category => Henry J & Allstate Forum => Topic started by: 51HenryJs on June 19, 2019, 08:57:30 AM
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I changed my frost plugs which are the cupped (?) type and they started to pop out and I was told I put them in backwards, convex in towards the block. Any advice/ pictures would be of help. I have rubber expansion plugs in now.
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The bulge goes out. Using a large 3/4" flat aluminum bar, tap the bulge in and the freeze plug will expand and stay in. I use some #2 sealer on the hole before setting the disc. Never had one leak.
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Thanks, lots of people have told me that. Hope it helps someone else.
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Using a large 3/4" flat aluminum bar, tap the bulge in and the freeze plug will expand and stay in
Yes that works.
If you don't have an aluminum bar you can also take a ball-peen hammer, place the ball end against the plug and hit the other end with a another larger hammer and that too will spread it out and seal nicely.
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I've never heard the term "Frost Plugs", so I looked it up. Here is what I found - "Core plugs are used to fill the sand casting core holes found on water-cooled internal combustion engines. They are also commonly called frost plugs, freeze plugs, or engine block expansion plugs". I grew up in the midwest and we called them Freeze Plugs.
What I do know is that the terms Frost and Freeze plugs are a misnomer, They will not push out if the water freezes in the block. The block will crack if that happens. This might be a regional term but Core Plugs tell you what they are in the name the way most parts are named. Just an FYI.