6 cylinder water pump recon with 4 cyl rebuild kit

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Originally Posted by gromit

Ian,
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It's interesting that the 6-cyl impeller is the same diameter, same number of blades but the blades are shorter. I did wonder if the flow was less than the 4-cylinder but it would depend on the speed it's run at.


Colin

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As well as speed it will depend on the resistance to flow - which may well be quite different for the six. But I suspect that the reason for the difference is that like a lot of the engine, the pump for the four is over-engineered as it was originally designed as a diesel, and is also designed to be OK with stationary use. Remember that the four was designed for an offroad vehicle, where the six is a car engine.