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Old 05-31-2006, 10:26 AM   #1
bg67lwb
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Water pump rotation

When was the change from multiple belts to serpentine? Does the water pump rotation change?
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Old 05-31-2006, 10:36 AM   #2
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Re: Water pump rotation

For the trucks it was 1988 not sure about the burbs and blazers and yes if it is a single belt system the H2O pump will be a reverse rotation pump.
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Old 05-31-2006, 11:00 AM   #3
bg67lwb
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Re: Water pump rotation

What happens if a water pump is run in reverse?
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Old 05-31-2006, 11:06 AM   #4
piecesparts
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Re: Water pump rotation

It rewinds itself!

I would guess that you are asking if a water pump is put onto the wrong setup in error. (I.E. a standard rotation pump on a serepentine belt setup) The water flow through the block is the same on a reverse rotation setup as a standard motor, however the inside of the pump allows for the change in rotation, in it's design of the impeller. If you run a pump backwards the motor should exibit an overheating condition and the water flow will be really low.
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