- Joined
- Mar 22, 2013
- Messages
- 215
The water pumps, one on each side of the block, are castings on the full sized engine. They take water in from the bottom and it passes through the body of the pump up to the impeller and into the block. To make the pumps for this engine I had to make them in two pieces, much like the heads. This was to get the water passage inside. The pump bodies are aluminum and a bronze impeller is pressed onto a stainless shaft which rides on 2 sealed ball bearings. At the water side of the shaft is a small O ring which will seal the shaft from leakage.