[Jack Gifford]

Originally Posted by sandmanjoe

... from WW2 with a pony tail...

Does... not... compute...

[Tone]

JB weld it!

I love that stuff.

Sealed up a busted seam on my radiator with it..a corroded seam spread apart and the corrosion blew apart under the pressure and the radiator drained in under a minute.

I JB'd the entire seam about a thousand miles ago. Worked like a charm.

[Formulabruce]

Originally Posted by newworld

Now the type of the crack, i would drill at the very end of the crack, so that it does not crack farther. then put in the oven, really high temp, let it sit about 6 hours, then press the " pin " that is slightly bigger than the diameter of the hole that you drilled, then, tig weld inside the nitrogen chamber or argon chamber with high nickel filler. then put the heads into the oven again, and this time, take 12 hours and decrease the heat 300-400 degrees every 2 hour and it will be fine .

After 12 hours, you let it sit outside another 6 hours, and resurface it.

having been there, this guy knows what he is talking about. this is the only real fix.
a NON real fix would be to use Marine tex. that will work on that exact crack if prepped correctly, but it will not last forever as rust can still form on porus iron under it, same with JB weld.