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Old 03-11-2010, 12:27 PM   #1
Dan
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Default freeze plugs and sealer???

Everything you read says to use sealer when installing freeze plugs, what sealer do you use??? I've always just installed them dry???
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Old 03-11-2010, 12:30 PM   #2
Dreddybear
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Default Re: freeze plugs and sealer???

Indian Head. two bucks at any parts store, its a molasses brownish black
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Old 03-11-2010, 12:32 PM   #3
chopped51
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Default Re: freeze plugs and sealer???

I've never used sealer. Never had one leak. I guess it couldn't hurt though.
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Old 03-11-2010, 12:33 PM   #4
55 dude
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Default Re: freeze plugs and sealer???

call some local engine builders and go with their answers. i have seen blocks that were cracked in freeze plug area because they were installed using permatex. i use silicone and haven't had any issues.
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Old 03-11-2010, 12:42 PM   #5
Jims35
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Default Re: freeze plugs and sealer???

Never use sealer , never had one leak . Just make sure they are the correct ones and not undersize.
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Old 03-11-2010, 12:43 PM   #6
el Scotto
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Default Re: freeze plugs and sealer???

I'm with the "nothing on the freezeplug when I install them" crowd... probably couldn't hurt 'em, but I've never done it before and never had a problem...
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Old 03-11-2010, 01:07 PM   #7
Country Gent
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Default Re: freeze plugs and sealer???

Permatex NON-HARDNING. Old reliable. Never had a problem. Helps them install a little easier.
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Old 03-11-2010, 02:08 PM   #8
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Default Re: freeze plugs and sealer???

Quote:
Originally Posted by Country Gent View Post
Permatex NON-HARDNING. Old reliable. Never had a problem. Helps them install a little easier.
That's what I have used for 45 years and never had a problem.
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Old 03-11-2010, 02:19 PM   #9
bobss396
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Default Re: freeze plugs and sealer???

Indian Head or the Permatex product mentioned here are both fine. I'll use whatever one I find first, just count myself lucky to find anything in my garage.

Bob
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Old 03-11-2010, 02:25 PM   #10
RopeSeals???
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Default Re: freeze plugs and sealer???

Aviation Permatex
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Old 03-11-2010, 03:33 PM   #11
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Default Re: freeze plugs and sealer???

Another vote for doing it dry.
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Old 03-11-2010, 03:35 PM   #12
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Default Re: freeze plugs and sealer???

Quote:
Originally Posted by Country Gent View Post
Permatex NON-HARDNING. Old reliable. Never had a problem. Helps them install a little easier.


Me, too.

......and they're NOT "freeze plugs" for the 5,486,905th time. They're "CORE PLUGS", used to fill the holes used during the casting process. That's all they were designed to do - they were not meant to pop out and prevent the block from cracking because somebody forgot to add antifreeze. I've seen cracked blocks with popped out core plugs and the plugs didn't save those blocks.
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Old 03-11-2010, 04:55 PM   #13
VegasBruce
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Default Re: freeze plugs and sealer???

Dry or a little Gasgacinch.
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Old 03-11-2010, 04:56 PM   #14
Dino
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Default Re: freeze plugs and sealer???

I use brass plugs and The Right Stuff.
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Old 03-11-2010, 05:22 PM   #15
29nash
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Default Re: freeze plugs and sealer???

I have used a dab of paint in the distant past when installing a welch/freeze plug. Since somebody invented loctite and it's more readily available in my tool box thats what I use. A good friend of mine don't use anything, just spits on them and drives them.

What are they called? Real mechanics don't argue about the small shit.
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Old 03-11-2010, 05:58 PM   #16
rjaustin421
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Default Re: freeze plugs and sealer???

I have installed probably 5,000 (not an exaggeration!!!) and have always put a light coating of silicone on them/
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Old 03-11-2010, 06:24 PM   #17
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Default Re: freeze plugs and sealer???

I like it dry!
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Old 03-11-2010, 06:27 PM   #18
ponchopowerd
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Default Re: freeze plugs and sealer???

leve it dry or if u ant to use a sealer ive used gray rtv
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Old 03-11-2010, 06:28 PM   #19
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Default Re: freeze plugs and sealer???

Been using loctite ever since I was taught to do it at a engine re-builder company. Never put anything on them before and never had a problem. I would call using it "insurance".
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Old 03-11-2010, 06:39 PM   #20
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Default Re: freeze plugs and sealer???

Use brass ones--NAPA has them--if not boat shop---don't need any sealer
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