Farm Equipment - D14 head core plug replacement ?'s

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D14 head core plug replacement ?'s

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Topic: D14 head core plug replacement ?'s

Posted By: baverwolf
Subject: D14 head core plug replacement ?'s
Date Posted: 07 Jun 2010 at 6:24pm

I posted awhile back on a D14 that I thought had a cracked head. Some suggested checking the core/freeeze plugs for leaking and low and behold they were! Thanks everyone! I was told I could use standard automotive freeze plugs. I measured and they are an inch plug. I called my local napa store and asked if they had any. They said they had brass and steel and had three different depths depending on how thick your block/casting is. My stock plugs are steel. Should I stick with steel or go brass? Also, what depth? I would imagine the deeper the plug, the better the seal?

Let me know what you think and your experiences with them.

Ben

Replies:

Posted By: CTuckerNWIL
Date Posted: 07 Jun 2010 at 7:20pm

Pull one of your old ones out and see how thick it is. It won't help to have one thicker than the casting is at that point and could cause some obstruction of the water passage if it is too thick. I don't know any reason why you couldn't use the brass ones but the steel lasted 50 years the first round so I wouldn't worry about using them again.
Have you thought about how to get them out? You can drill or punch a hole in them off to one side and use a good solid drift punch to pry them out. I would clean up the casting with a small wire wheel or flapper wheel before putting the new ones in.

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Posted By: baverwolf
Date Posted: 07 Jun 2010 at 7:51pm

Thanks for your reply. I guess your right about the steel ones lasting 50 years. lol My core plugs actually aren't that rusty. In fact, they don't have much rust on them at least on the side I can see. They seem to be leaking around the edges. As far as removing them, I've had good luck with the method you described on auto engines so I'll give it a try on these. If I get time, I'll post pictures of before, during and after replacement. As far as the depth goes, I guess I just need to pull one to see how thick the casting is.

Thanks!

Ben