Head Freeze plug Leak V8

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So, do I fix it or keep an eye on it?

http://www.youtube.com/watch?v=p_0POlR6dPg

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HEY GUYS, what about this.

Expansion plug:
http://www.dormanproducts.com/p-21602-10227.aspx

[tufcj]

The expansion plugs will work where there isn't clearance to tap in a solid one. The trouble is that usually they will leak again, so you're just prolonging the problem.

Bob
tufcj

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Bob, what diameter plug do I need, 1" (inch).

If I don't go w/the rubber plug, then I would have to tare down the intake/remove the head etc. Right? OR do you know of a easier way to do it?

Thanks,
Jim

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http://www.dormanproducts.com/p-2160...inder%2520Head

I put the info in and their web site says it won't fit.

Hummmm, I still need to find out for sure if it's a 1" or 1 1/8" hole. THEN find something to fit it if I have to tare into it.

For NOW I would like to plug it (rubber) but IF the worst case is to take the motor apart, then I would rather cut a 3 or 4" hole in the fire wall and replace it, then re-weld the fire wall back.

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Now I dig deeper on their web site, section 8, page 61:
http://www.dormanproducts.com/catalo...onPlugApps.pdf

I find this, but need to know if I have a 1" or 1.5" plug.

V8 - 5.9 (360 CID) (continued)
1979-72 Cylinder Head - 1" SC 4 555-018 Steel 565-018 Brass — 570-005 Rubber
1979-72 Cylinder Head - 1-1/2" 4 555-028 Steel 565-028 Brass 568-009 Copper 570-008 Rubber.

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Update:

Just shut it off after idling for 45min or more.

195* T-Stat.

Idling temp 200*

Shut down temp increased to 220* and that was the max, now falling.

Freeze plug is barley damp and I am letting it sit under pressure and no results of anything major.

I'm gonna see what happens tomorrow after it sits over night.

[tufcj]

The freeze plugs in AMC heads are 1" down the sides, and 1 1/2" front and back (at least from 1970-up). Check and re-torque your intake, as a drip from the back corner could look like a leak at the head. I'd try to get a better look with a mirror, or the dye that you add to the coolant and check with black light before ripping things apart.

Bob
tufcj

[rollbar]

Thanks Bob, didn't think of the die trick. I did use a mirror and everything back there felt dry.

Thanks for the diameter of the F-Plug.

I forget what yr motor I have but I do have some numbers off the passenger side head.

[rollbar]

Ok, found out exactly where the antifreeze leak is coming from, the head gasket on the passenger side. :(