If you did any brazing, the pipes would have to overlap. They just don't solder worth a darn. The melting temperture on that hanger is a lot higher than the melting temperature of the muffler. Or straight pipe, muffler, turn down tip under the car. What You’ll Need: – Universal Exhaust Hanger with an open, pivoting end. Gas welding rod (I have not bought any for couple of years) was pretty cheap,and you will find that 1/16 inch will Work better than the larger Dia.
In the … I have actually used flux cored MIG wire to torch weld, but I found that the fluxed brazing rods work very well. Coat hangers are right out unless you have a good way to connect feedpoints to them. From what I've found the main issue is the purity of brazing material.
To braze i use a jeweler's torch that makes it easy to get a very tiny area very hot. Its simple, cheap, and even allows the whole system to be easily removed. I'll try that coat hanger suggestion along with some flux and see if I do any better. MIG is the best option for strength and speed of completion. 1999 Sea Ray 290 DA with twin 5.7 freshwater cooled blocks and manifolds. Take a coat hanger or beat the flux off a stick of rod and feed it in as filler.
I've used coat hanger wire as welding rod with an acetylene torch for welding sheet metal and exhaust pipe in my younger days. One trick you can also use is a cheater rod. The coat-hanger thing, btw, sounds more like welding. Brazing shouldn't be used on anything near the exhaust ports, because the exhaust gases run in the 1200-1500 degree F range right out of the exhaust ports. Oh, and im welding all of my custom dual exhaust, not just the bracket I should have pics up tomorrow GradeZ28, Jan 14, 2006 #8. guitarisawesome ... You *can* just braze with coat hanger if you dont use the torch right but itll fall off real easy... you know its "welding" when you see the 3 metals flow liquid together and sparks start flying. A pipe expander would definitely be useful. You can't "braze" with a coat hanger.
Welding it with a stick welder isn't the easiest task. Bullet muffler on the downpipe, straight pipe, 90° bend, out the side. A metal coat hanger will not do at all.
Plus coat handers are made of really dirty metal. I don't use coat-hangers anymore for oxy-acetylene welding, back in the 70's, coat hangers were good enough steel to do so, today, you might as well use baling wire, about the same quality. Not to mention the zinc poisioning. I am perplexed as I have done this many times
Tried to winterize today but starboard side exhaust manifold on starboard engine didn't drain any water when I pulled the blue plug out. Wire hangers will work fine, but the metal can be very dirty leaving pits and adhere poorly at worst. I once built a wideband vertical dipole in a double bowtie fashion with them, but connecting them together at the feedpoint was a pain. I had pretty good luck with brazing with a white flux coated rod in the past, but I couldn't get anything to go tonight. Your problem is that you need a brazing rod and some flux. The Wire coat hangers will work!