hey guys, so I've bought a an electric water pump for my 70cc speedfight 2 and I was wondering how should the pump be linked up? should the pump be pushing to the cylinder or pulling? should the cool water from the rad be going in at the top of the cylinder or the bottom? any help would be awsome! regards Tom
The pump should be pushing coolant to the cylinder. The outlet from the cylinder should go to the bottom of the radiator, with the return from the top of the radiator going to the inlet of the pump. I think that's correct but Stevep or Turbovetto will correct me if I have the inlet and outlet switched.
The water pump need's to be fitted in the water pipe from rad (cooler water) and going into the bottom hose on engine.
Never done one on a speedshite, I can only go by how it works on a Piaggio and Gilera; Bottom hose from rad to pump lower pipe, pump outlet to the cylinder, out the head and back to the rad.
