_Jason_
New Member
Hello all! We had a blow out on the threaded flange leading to the mixing elbow due to corrosion. The motor is rebuilt, and the mixing elbow doesn't look OEM (see photo). The issue was a mild steel flange connected to a stainless elbow, and the weak link finally corroded and gave way. I've since found a stainless OEM replicate mixing elbow from HDI Marine out west (https://hdimarine.net/product/p4bow-cast-stainless-steel-mixing-elbow/), but the water inlet barb is for 1-1/4" hose and the exit from the Bowman heat exchanger is 1". This seems like a simple task to step up the size, but when incorporating a vent loop and the available space above/adjacent to engine, we are finding difficulty to make acceptable bends in the hose without kinking. Anyone with experience replacing the exhaust mixing elbow on the Perkins? And a clever way to incorporate a vented loop in the space. Any feedback is welcome!
p.s. the original hose from exchanger to elbow had a tall loop with a one way valve prior to the mixing elbow. That doesn't seem like it would stop a siphon from filling up the exhaust and flooding the engine. Not sure the original thought, or perhaps they couldn't fit the vented loop either!
p.s. the original hose from exchanger to elbow had a tall loop with a one way valve prior to the mixing elbow. That doesn't seem like it would stop a siphon from filling up the exhaust and flooding the engine. Not sure the original thought, or perhaps they couldn't fit the vented loop either!