Quote:
Originally Posted by jojoegen
about 5.2" top and bottom.They look pretty much the same size.March only makes underdrive sizes.Don't see very much fluid movement.I think the crank need to be larger to increase water pump flow.
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You posted this is a new KC engine, doubtful the pump is failing. If you increase water flow to move the water through the radiator faster, how is it going to have a better chance to cool? It will make it run even hotter. I argue your issue has nothing to do with the pump. For reference, my stock FE pulley and balancer are about 6.5" in diameter.