welding seam in radiater.

whats the proper way to weld a seam in a radiater, around a outlet. brass, lead, bronse, what flux, ect.

 

We did it on a buddy's radiator with solder years ago.

(Had to move the outlet from one side of the top tank to the other for an engine swap.)

I can't recall what type of solder we used, but a standard propane torch provided the heat. It worked for as long as he owned the car (3-4 years after that) at least!

 

Last one I did was with 95/5 solder, and No-Korrode paste. Be careful not to get the tank too hot, if you lose any of the solder in the seam of the tanks, chances are you'll have to resolder the whole tank. And that is a major pain in the****...

 

Any good acid flux is OK..BUT....use 50/50 solder...It melts at a lower temp than 95/5.....you stand a good chance of melting the 50/50 that was used to build the rad when you use 95/5 because melting point is higher....small propane torch is fine-just BE CAREFUL to not over heat ....CLEAN the area well also.....

Jeraey Skip

 

assuming your radiator is brass, not plastic or aluminum,

use a high tensil strength solder.

the difficulty is that it's gunna have rust and antifreeze and***** on the inside of the radiator that will contaminate the joint.

get the joint as clean as you can, wire brush, sand paper, muratic acid and rinse with water

I've had decent results with brush on paste flux and solid core solder,
and like Hack said a propane torch.

just like the copper plumbing in a house.

Paul

 

[ QUOTE ]
just like the copper plumbing in a house.


[/ QUOTE ]
Personally,
I found Copper plumbing to be a little easier.
Because it was thicker,so I wasn't worried about burning through.

But the method is the same.
Put the Flux where you want the solder to go,keep the torch moving.

 

thanks, that is what I was trying to say.

Paul