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Freeze plug changing advice

Posted: October 5, 2016, 2:45 pm
by ThinLizzy13
One of the freeze plugs on my 352 has developed a very slow leak. I've been reading about removal/installation. Seems the 3 popular ways of removal are

1) knocking it sideways and pulling it out
2) drilling a hole into the plug and tapping it with a screw. Then using the screw to pull it out.
3) using the appropriate removal/installation tool

Right now I'm leaning towards the knocking the plug sideways and prying it out method. Anyway got any advice on removal/installation? Do's and donts?

Thanks :cheers:

Re: Freeze plug changing advice

Posted: October 5, 2016, 3:27 pm
by orangeRcode
I changed mine out just using a big flat blade screwdriver and a hammer. Knock it on one side and pull out with pliers. Very easy to do with engine out of the vehicle. May be a bit more challenging in the truck depending on which one it is. There is one close to the motor mounts. Hopefully, that's not the one you need to remove. I used some shellac on the plug when reinstalling but have also heard of people using rtv or nothing at all.

Re: Freeze plug changing advice

Posted: October 5, 2016, 5:56 pm
by ThinLizzy13
I got lucky. My plug is between the starter and motor mount. I've got a pretty clear shot at it. Should I go with another steel plug or use brass?

Re: Freeze plug changing advice

Posted: October 5, 2016, 7:42 pm
by jamesdfo
I had to pull one on the killer 2.3L in my '83 Ranger back in about '84 (to put in a block heater), being an autobody guy, you use what you have on hand, which for me was a slidehammer:) I drilled a hole in the freezeplug, close to the edge (the theory behind that is, it should pivot), and with a few whacks, out it came!!
In my case, I had a straight shot at it, so this may or may not work for you?

James

Re: Freeze plug changing advice

Posted: October 5, 2016, 11:28 pm
by LM14
I've always used the big screwdriver and hammer method. Clean the hole really good, then clean it again. I use Hi Tack on the plugs edge and drive them in with a big socket on an extension.

SPark

Re: Freeze plug changing advice

Posted: October 6, 2016, 7:51 am
by orangeRcode
ThinLizzy13 wrote:I got lucky. My plug is between the starter and motor mount. I've got a pretty clear shot at it. Should I go with another steel plug or use brass?
I used brass. Got a whole set from rockauto.com for very reasonable price.

Re: Freeze plug changing advice

Posted: October 6, 2016, 8:17 am
by ThinLizzy13
Thanks everyone! I'm going to order a brass plug and get to work :thumright:

Re: Freeze plug changing advice

Posted: October 6, 2016, 1:50 pm
by LM14
If you have one bad one, the rest probably aren't far behind. I would do everything you can do while you are at it.

Spark

Re: Freeze plug changing advice

Posted: October 22, 2016, 1:24 pm
by ThinLizzy13
Changed the plug out. For once a project went smoother than expected, no hiccups! Although I couldn't believe all the crud that was hiding behind the plug! :shock:

Re: Freeze plug changing advice

Posted: October 24, 2016, 9:12 am
by orangeRcode
ThinLizzy13 wrote:Changed the plug out. For once a project went smoother than expected, no hiccups! Although I couldn't believe all the crud that was hiding behind the plug! :shock:
When I changed mine I had the short block on an engine stand. I had to take a long screwdriver to clean out the junk in the water passages. I pulled all the freeze plugs and used a high pressure water hose to blast a lot of crud out of there.