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Old 06-11-2012, 11:25 AM   #1
WastedAgain440
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Default Steel or brass freeze plugs?

I pulled the engine on my ranger because I had a coolant leak behind the flywheel. Going to replace all of the freeze plugs since the motors out, I'm just wondering which freeze plugs would be best steel or brass? I know the brass ones resist corrosion a little better but I've heard horror stories of them not sealing well. Should I use some rtv on the sides of the new ones I install after cleaning the bores with some emery cloth? Any tips are appreciated this is my first go at installing freeze plugs.Thanks
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Old 06-11-2012, 11:48 AM   #2
mikeesracing
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Default Re: Steel or brass freeze plugs?

I have always used brass. I have never had a problem with them not sealing and I thought they sealed better because they were a softer metal.
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Old 06-11-2012, 11:53 AM   #3
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Default Re: Steel or brass freeze plugs?

Wasted,
Either one will seal just fine. However, I would not use RTV, it really is not made for that type of use. We use Permatex "Indian Head" gasket shellac but any type of similar brown gasket sealer should work. I smear it around the inside of the hole and drive the lug in
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Old 06-11-2012, 11:55 AM   #4
WastedAgain440
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Default Re: Steel or brass freeze plugs?

Thanks guess I'll go with brass, should I use any rtv or something on the egdes when installing them?
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Old 06-11-2012, 11:55 AM   #5
1949 caddyman
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Default Re: Steel or brass freeze plugs?

Brass & sealer.
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Old 06-11-2012, 11:55 AM   #6
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Default Re: Steel or brass freeze plugs?

I prefer the brass ones. I've used a lot of them and have had no problems. Generally I clean the holes well and make sure there are no rust, burrs, or other defects. Coat the plug with Permatex Hi Tac and tap it in with a socket being careful to keep it square in the bore. Be sure to use the right plug as there are standard and metric sizes that are close.
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Old 06-11-2012, 11:56 AM   #7
WastedAgain440
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Default Re: Steel or brass freeze plugs?

nevermind just read bills post. thanks I have some indian head gasket shellac I'll use that
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Old 06-11-2012, 12:34 PM   #8
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Default Re: Steel or brass freeze plugs?

brass with the indian head shellac.
use nothing else!!!!
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Old 06-11-2012, 02:35 PM   #9
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Default Re: Steel or brass freeze plugs?

Steel, and sand the coating off the back, should last a couple of years, repeat business...

Did I say that out loud? Kidding

Actually I've used both with success, depending on application, sealer helps, rtv not so much, most important thing is to use good coolant mixed correctly and make sure the grounds are good, to prevent corrosion.
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Old 06-11-2012, 03:33 PM   #10
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Default Re: Steel or brass freeze plugs?

The steel ones are fine. If you keep up on your coolant. Once it goes bad it will eat the steel ones pretty fast.
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