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Joined: Nov 2005
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OP
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I found two machined holes in my block, each is one inch in diameter. One is at the back under the head and the other is on the left side under the intake manifold. I was advised by a parts vendor that they were for feeze plugs. I bought two cup-shaped metal freeze plugs at NAPA, put some Permatex-2 on them and beat them into the holes with a hammer and a block of wood. My questions:
Are there more than two freeze plug holes?
Did I buy the correct type of freeze plugs?
Thanks in advance for the help.
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
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If you got the cup-shaped plugs to fit, good for you. The originals were dished plugs that were set by flattening the center to force the edges outward. There are only two "freeze" plugs. Actually they "core" plugs used to help remove the sand used to produce the casting. It is a common misconception that they provide any freeze protection. They do not!
How Sweet the roar of a Chevy four!
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Joined: Nov 2005
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ChatMaster - 1,000
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Thanks Chipper, I replaced the cup shaped ones with the dish type, and they fit much better; I think they will actually stay in place!
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Joined: Dec 2001
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ChatMaster - 10,000
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ChatMaster - 10,000
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Are you guys talking about Welch plugs? maybe someone can post a picture showing the difference and the ones that hold better. I found this web site: welch plugs and this pic. ![[Linked Image from engineproblem.com.au]](http://www.engineproblem.com.au/images/fit_welch.jpg) If this don't work just get a bigger hammer!
Life's a long winding trail, love Jesus and ride a good horse!
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Joined: Nov 2001
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Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
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:confused: :confused: :confused: :confused:
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: Nov 2001
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ChatMaster - 15,000
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In Great Britain they are Welch plugs. Here in the States they are core plugs. Wonder what they are called in Russia, China or Brazil?
How Sweet the roar of a Chevy four!
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Joined: Dec 2001
Posts: 176
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Dec 2001
Posts: 176 |
Chip,
The plugs are referred to as soft plugs, welsh plugs and freeze plugs by many old timers. Take your pick and call,em what ya want
Walt D
1934 Mstr 4 dr/sidemnts
1937 1/2 ton P/U
1953 Bel Air HT
1946 Aeronca 7-AC Champ
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Joined: Dec 2001
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ChatMaster - 10,000
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ChatMaster - 10,000
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I never heard them called core plugs, not even when I was in patternmaking and foundry class back at Texas Tech. We did call them Welch plugs, soft plugs, and freeze plugs and in the Marine Corps we called them...them sorry  leaking freeze plugs maybe because that is what our motor pool First Sargent called them! His instructions on installing them was " hit'em with a big hammer!"
Life's a long winding trail, love Jesus and ride a good horse!
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