88 mustang 302.I put a front cover and water pump off 72 302 v belt my car is set up for a serptine belt so the water pump is runing backwards does it matter

Depends on the pump. Maybe, maybe not. What kinds of fins did it have on it? Did you happen to take a picture?

Yes it matters. Instead of pumping the hot coolant out of the engine past the thermostat to cool the coolant in the radiator, the water pump will force the cold coolant out of the radiator towards the thermostat causing it to close so no coolant enters the hot engine to cool it off. Can you say "ov…

If the water pump is running backwards, it will not circulate the coolant and will overheat. Generally speaking, water pumps are directional, so you need to correct this problem.

Most automotive water-pumps are the centrifugal type and if spun backwards they will hardly work at all…It’s like spinning a turbine backwards. The blades just stall and splash the water around inside the pump…

Tester nailed the answer. Attached is an operating diagram of a typical water pump setup. Best case, you’ll be doing what Tester described. And that ain’t good. Worst case, your pump will have spiral type impellar blades with correspondingly designed chambers and it’ll just cavitate. http://www.ai…

usually the design of the vanes in water pump are directonal- i cant recall a water pump that didnt have directional vanes - so yes the effeciency of the water pump will suffer dramatically if the rotation of the water pump is not followed. SO, the water pump is not working to it’s full potential. a…

What should have been done to avoid confusion on this issue would have been for Ford to use a different bolt pattern on the water pump hub where the pulley mates. As it is, the serpentine and V-belt pulleys will interchange and seeing as how the early and late pumps look identical except for impell…

Some water pumps are ‘bi-polar’. They seem to work as well in one direction as the other. But most are designed to work in one direction only and reversing them will reduce or totally eliminate their pumping ability.

The water pump is turning the same direction as the old one did.But this one was off of a v-belt engine witch turned the other way.The fins one the old one were different than this one this one the fins are strait the old one kind of twisted.

Can a water pump work if it runs backwards

Maintenance/Repairs

ok4450 June 3, 2011, 5:12am 6

The V-belt driven 302 pumps turn one way and the 5.0 serpentine pumps are made to turn the other so yes it will be a problem. Back to the drawing board.

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Can a water pump work if it runs backwards

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