This is my heat exchanger out of my steam action I had to remove it after it started leaking and fill my cylinder of my engine over night. didn't know that until I went to start the motor for a big day of work and it wouldnt start and made a horiiable backfire turn it over just a couple more times and could tell it had too much compression. stopped it and pulled the plugs and spun it over and looked like a water hose. so here is a pic of where I took it out of the other one the other side is a duplicate heat exchanger that comes off both sides of the motor.