Help Broken Radiator Drain Plug (not Petcock)

[wmwhite9]

The petcock AND THE THREADS the petcock screws into just came out of my radiator when I was trying to drain it. I have no idea how I could fix this other than buying a new radiator since there is just a dime sized hole left with no threads in it.

 

[90sickfox]

If its brass or aluminum it screws into you can solder it back on with copper pipe flux, solder, and a propane torch.

 

[jrichker]

Pull the radiator out, wire brush the area where the petcock and boss came out and do the same to the petcock boss. Take the petcock out of the threaded boss so that you don't damage it when you apply heat to the threaded boss. When both pieces are clean and shiny, you are on the right track.Then get a propane torch and some paste solder flux and plumbing solder. Lightly brush the flux on the radiator and boss mating surfaces and heat it up good with the propane torch. Then solder away...

If you are any good at sweat soldering copper pipe used in most houses, you'll have a solid, permanent repair.

 

[mikestang63]

if you are not comfortable doing it yourself, find a local radiator shop and have them solder it back in. Should ne a nominal amount.

 

[wmwhite9]

wow, seriously, thanks a ton guys. Never would have thought to do any of that..