Water pump pulley sizes
August 21st, 2014, 04:17 PM
#1
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Water pump pulley sizes
Gang,
Back in '66 (and I'm guessing other years) Olds varied the water pump pulley outer diameter. Seems like the non-a/c cars had a larger one, and a/c cars had a smaller one.
Do you have opinions about which size is prefereable? I'm guessing the a/c or heavy duty (smaller) would spin the compressor, alternator, power steering pump and water pump a bit faster, so it might be preferable.
What do you all think if I'm looking for a cool running, good charging, good steering car? Just stay stock?
Back in '66 (and I'm guessing other years) Olds varied the water pump pulley outer diameter. Seems like the non-a/c cars had a larger one, and a/c cars had a smaller one.
Do you have opinions about which size is prefereable? I'm guessing the a/c or heavy duty (smaller) would spin the compressor, alternator, power steering pump and water pump a bit faster, so it might be preferable.
What do you all think if I'm looking for a cool running, good charging, good steering car? Just stay stock?
August 23rd, 2014, 01:17 PM
#2
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Join Date: Feb 2013
Location: Phoenix, AZ
Posts: 14,134
I think the pulley diameter was matched to the water pump impeller diameter. Chris Witt had posted some good info about this a long time back but I don't have a link handy. Seems I remember a discussion about spinning the impeller too fast could cause cavitation and reduce cooling.
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