High Risers and Injection Heads

High risers combine two features: they raise the engine exhaust outlet to increase the gradient on the exhaust system, and they have a carefully calibrated range of water spray holes sized to make water jet into the exhaust gasses at full power to maximise the cooling effect. Normally fabricated from 316 stainless or alloy 625 if specified. Many of the surfaces are polished, and each is equipped with heat protecting jackets tailored for the particular unit.