Press on or bolt on pulley matter?
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Champion
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Press on or bolt on pulley matter?
Um...I bought a water pump that has a press on pulley, but I have a bolt on style, does it really matter, because it has the pulley on it already? Its probabily less parasitic drag because its lighter maybe 
Legend
Joined: Jul 2007
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From: DFW, Texas
RE: Press on or bolt on pulley matter?
Mine on my 2001 isa press on. I've taken the fanand cutch off completely (running electric fans) and haven't had any issues yet. It scared the bejesus out of me at first because it looked like nothing was holding the pulley on. I didn't want to crank the engine only to find out that the fan clutch nut held the pulley on. I dont think the boltless pumpmattersso long asthe nutsdon't hold your fan on as well.
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Champion
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RE: Press on or bolt on pulley matter?
ORIGINAL: aim4squirrels
Mine on my 2001 isa press on. I've taken the fanand cutch off completely (running electric fans) and haven't had any issues yet. It scared the bejesus out of me at first because it looked like nothing was holding the pulley on. I didn't want to crank the engine only to find out that the fan clutch nut held the pulley on. I dont think the boltless pumpmattersso long asthe nutsdon't hold your fan on as well.
Mine on my 2001 isa press on. I've taken the fanand cutch off completely (running electric fans) and haven't had any issues yet. It scared the bejesus out of me at first because it looked like nothing was holding the pulley on. I didn't want to crank the engine only to find out that the fan clutch nut held the pulley on. I dont think the boltless pumpmattersso long asthe nutsdon't hold your fan on as well.
Legend
Joined: Jul 2007
Posts: 7,843
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From: DFW, Texas
RE: Press on or bolt on pulley matter?
Yeah, mine has 4 bolt holes as well, they're empty, always have been, guess they didn't feel the need to design a new pulley.
I suggest sparklers instead of streamers, just a personal preference
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I suggest sparklers instead of streamers, just a personal preference
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Record Breaker
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RE: Press on or bolt on pulley matter?
The empty holes are there so that you can hold the water pump pulley still so you can remover the clutch fan assy (need special tool of course)
It's a newer style pump. OEM made the change around 2000 I think. Probably cost less...
It's a newer style pump. OEM made the change around 2000 I think. Probably cost less...