6 and 7 series water pump on 320 engine

Posted by Mal120NZ On 2012/11/27 15:56:55

I have a 1929, 6 series 320 engine and have a question about the water pump. I have removed and stripped the side mounted water pump and the fan pully assembly and can see that the water pump body will actually fit into the housing on the front of the motor. I know that the 1929 engine had the side mounted water pump as there was not enough room between the front of the engine and the radiator until they changed things in 1930. I will be moving my engine back in the chassis for my speedster project so wonder if I should refit the water pump body into the front of the engine as that would tidy things up and I will have the room, and it does fit. I am assuming that there is a baffle plate or something similar in the water jacket of the 1930 engine behind the where the water pump fits to ensure the correct flow of water through the pump impeller. There is no such baffle in my 1929 water jacket as it was unnecessary without the pump being there.
I am assuming the water jacket castings are the same for 1929 and 1930 on the 320 engine, and hopefully only a baffle plate or something similar is all I need. Can someone with experience of the 1930 water pump and the water jacket area where it sits, let me know their thoughts on my proposed repositioning of my water pump to front of engine.
Cheers Mal