650sx (5)

Dual cooling is a necessity for any high performance motor in a ski. It helps keep the motor cooler since higher compression puts out more heat. Since i want to put a high compression head on my ski later on i started to get it prepped for dual cooling. you have to tap a second hole in the pump out let then run another water line in through the hull i will post a diagram. Then you will have to tap another line into the exhaust manifold. After that you just need to run a line from the head to the pisser or out of the ski. First is stock water lines then dual water lines.