Radiator solder

I soldered the radiator for an old Dodge and it held for the 5 years that I kept the vehicle. It had a couple of broken tubes in the radiator, so I peeled them out of the tanks on the top and bottom, then scrubbed the tank surfaces bright and shiny with sandpaper and a small wire brush. I fluxed it with some ancient paste flux and soldered a brass patch over the empty holes in the two tanks. I think I used my O/A rig with a 00 or a 000 tip to get a small flame with enough heat to do it quickly. Quick is important so that you don't unsolder adjacent tubes. It's been 30 years since I did it, but I remember it went pretty well.

Good Luck, Bob

Tell me what you know.

Steve

Hard solder - aka - silver solder. It is the only way. Braze.

Martin

Mart> Tell me what you know.

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"Martin H. Eastburn" wrote: Hard solder - aka - silver solder. It is the only way. Braze. ^^^^^^^^^^^^^^^^^ You usually know things that I don't know, so please tell me. How are you going to silver solder a radiator that is assembled with soft solder?

Ive had good luck using the small wire brush that comes with the Dremel tools, for cleaning up the area around a leak in a radiator prior to soldering up the hole.

Gunner

I've had good luck slapping on epoxy, hasn't leaked in years. Lost a couple of tubes on my tractor but it still cools the engine ;)

Free men own guns - www(dot)geocities(dot)com/CapitolHill/5357/

Surely you jest !

unless you need a large roll, get a radiator shop to sell you a few yards of solder and bring a bottle for a pint of organic flux. I prefer 70/30, but many types are available. The Eutectic (longer heat range between liquid and re-solidified ) solder used for rads is much better than the crap for plumbing sold at your local hardware store.

No.

Eutectic melts at one temperature (361); below that it is solid, above fully liquid. Other ratios have a "pasty" stage in between that and the temperature at which they are fully liquid.

I know that the gospel and power of Christ is on the Earth. Anything else?

No, No, that's belief, knowledge is totally something else. :)

cheers T.Alan

You don't drop the whole radiator into a tank!

It is a spot treatment. Where the hole is.

This was taught to me by a Master Mechanic who had NASCAR grade background.

Consider what happened to me :

Driving my Blazer down the highway at 65 MPH, the front engine block section of the water jacket blew out. It was a massive gas cloud covering up the front of the truck. It was lucky I was able to move to the right by 5 lanes.

If you blow your radiator at high speed - you will loose the engine block like I did. wanna try - going to go for it or wait ? Not me.

Martin

Mart> "Martin H. Eastburn" wrote: Hard solder - aka - silver solder. It is the

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Nope - not at all. Why do you think I would ?

Soft solder dissolves and melts. Hard solder doesn't.

You can likely be able to use the phosphor bronze for air conditioning tubing as well.

Mart>

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You have no way to know what's going on in my mind. Please don't bother to try.

Now that's a statement of fact! cheers T.Alan

That's ok. No one cares, till you go postal.