2. Heat the Seam with a torch while holding the flange in dwelling. Application heat until the native metal begins to melt and puddle. Originate feeding the iron brazing rod into the puddle as the puddle begins to formation. Any repairs involving extra metal must be done by brazing with an oxy-acetylene torch and iron brazing rods.
Instructions
Repairing the Manifold
1. Disinfected the manifold and the broken off flange chipper. Be positive the parts are free of charge of rust and carbon. Burrow the flange back into position to fabricate persuaded it Testament Friend properly and be in the recent plane. Clamp the broken flange with Vise-Grips at the contour furthest from the Seam.
Exhaust manifolds profession in exact punishing conditions. They open exhaust gasses with core temperatures that top 1,000 degrees F from the engine to the exhaust pipes. Many inventory and aftermarket manifolds enlarge engine performance by improving scavenging and flow dynamics of the exhaust gasses as they Way out the engine attitude. Most manifolds are specious of toss iron and cannot be welded. Deed the torch focal location and the rod along the Seam with a regular and slow locomotion, constantly melting the native metal and replacing it with the rod facts. Braze as yet as imaginable before stopping to flip the manifold to can achievement access to the other side. Keep at this mechanism until the plentiful Seam has been brazed.3. Algid the repaired area slowly. Hold the torch back a little from the actual brazing distance and wash the flame over the repair and the surrounding area. Increase the distance of the torch gradually as the general area heats up and the repair cools, slowly pulling it back to apply less and less heat to the area while washing over a slowly-increasing area. This will slowly cool the manifold in a consistent pattern to avoid causing new stress cracks due to the thermo-dynamic expansion rate of the manifold material.
4. Begin removing the torch, then replace it in ever-increasing intervals once the torch has been worked back to about 18 inches from the area and the metal has lost all glow and has dropped in temperature so that the heat may be removed entirely.
5. File away any protruding brazing material from the mating face of the manifold. Hold the file flat and in plane with the side of the flange that did not break off. Judge the flatness of the repaired piece with the unbroken side. Remove material from the repaired flange if necessary to accomplish flatness.
