Thread: I found what blew in my engine!

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Yep, that wear pattern sure looks like the vanes were not running true. The really strange part is, I looked inside the first pump that failed, to compare it to this one, and that ring is actually a round plate. It wasn't shaped like this one. I think this one was also just a round plate when I had the back off to repair the gasket in Daytona. I remember that I couldn't see the vanes because I was trying to make sure I truly had the V belt version and was trying to determine which way it was designed to run. I think the spinning vanes reshaped that plate into the cuplike shape it is now.

There is also the possiblility I am overdriving this pump. Ford Racing discontinued their pulley set for this short pump so I was on my own. I bought a set of Zoops pulleys and had the bottom one machined to fit my damper. The water pump pulley is way smaller than the one on my Son Don's 302. His crank pulley is smaller and the water pump pulley is bigger, mine is just the opposite.

I just found the company who made Ford Racings pulleys and am going to buy a set of theirs to slow down the pump rotatilon. Maybe that is why I blew the gaskets out of two pumps too, way too much pressure. I also noticed that at idle my car runs cooler than going down the road. Maybe the water is flowing too fast to be cooled by the radiator.

Don

Originally Posted by Itoldyouso

There is also the possiblility I am overdriving this pump. Ford Racing discontinued their pulley set for this short pump so I was on my own. I bought a set of Zoops pulleys and had the bottom one machined to fit my damper. The water pump pulley is way smaller than the one on my Son Don's 302. His crank pulley is smaller and the water pump pulley is bigger, mine is just the opposite.

Don

Don,
As a point of reference my billet pulleys from Rocky Hinge are 6"OD on the crank, 5"OD on the pump.