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There are a number of materials used in heavy duty exhaust applications. Some of the materials are appropriate for heavy duty applications. Other choices are not durable at the temperatures generated by gas and diesel engines and should be avoided if acceptable service life is desired. Materials selected must not only survive high temperatures, but also severe vibration, corrosive exhaust gasses, and external corroding agents such as salt and water.The materials generally considered for ex …

OXYACETYLENE WELDINGFiller Metal: Use a mild steel filler, 3⁄32" diameter, free of rust. (American Welding Society classification A5.2) DO NOT use copper coated filler metal.Welding Equipment: Use a number 3 or 4 tip. Observe instructions of the equipment manufacturer when adjusting the operating pressures at the gas regulators.Procedure: Clean the parts to be welded thoroughly. Incline the torch at a 45° angle away from the direction of travel. Use the forehand wel …

Backpressure A key performance factor in selecting the proper muffler is backpressure. For the most efficient engine performance it is important to apply a muffler that minimizes backpressure. Backpressure is the force necessary to flow gasses through the Exhaust system, or the resistance to exhaust flow. System considerations include friction and momentum effects - expansion / contraction / elbows, and velocity head loss at outlet. To minimize backpressure, long tube lengths, …

Bent Tubes & Elbows For directional changes of exhaust flow in exhaust systems. Available in common angles (90°, 67° and 45°) for both O.D. andWye Connector For joining legs of dual manifold outlet to form a single exhaust system. Wye connectors can provide an additional 3 to 7 dBA exhaust noise reduction over that of the primary muffler and may also be used to replace conventional wye pipe.Resonator Secondary noise reduction component that generally provides 2 to 3 dbA addition …

Easy Maintenance Tips Reduce Exhaust Noise  1. Check the exhaust tubing. Repair or replace worn or leaking components.  2. Make sure your exhaust system is properly supported.  3. Installing a resonator or wye connector muffler is an economical way to reduce noise.  4. Modify a single exhaust system to a dual.  5. Check stack and tailpipe position. A straight stack will be quieter than a curved stack on vertical exhaust systems. Turn your horizontal tailpi …