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06-01-2024, 06:18 PM | #1 |
Registered User
Join Date: Jun 2014
Location: Tahuya WA
Posts: 526
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Warped Water Pump Pulley
A few years back my SBC long water pump started leaking so I replaced it with a rebuilt one, at the same time I noticed that when I removed the original water pump pulley it had a chip missing by one of the holes.
So I replaced the pulley with a fancy chrome aftermarket one. When everything was put back together and I started the engine the pulley wobbled and that caused an intermittent chirping sound. I assumed it was the inexpensive water pump flange so I replaced the water pump with a better quality newly manufactured one. The dang pulley still wobbled so that was the problem all along. Just installed a new painted steel replacement pulley and that thing wobbles. I wonder how many junk steel water pump pulleys are out there. |
Yesterday, 12:59 AM | #2 |
Senior Member
Join Date: Mar 2015
Location: washington
Posts: 2,191
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Re: Warped Water Pump Pulley
Measure the run-out with a dial indicator.
You can buy one for not a lot of money. The issue could be as simple as the pain on the flange? Maybe aftermarket China pulleys? As customers, you may be aware, we are also quality control. Why I love this forum, helps steer me from the really bad stuff. I feel your frustration. Take a day off from this project, if you can. Get some measurements and this forum will do our best to get you going again. |
Yesterday, 02:59 AM | #3 |
Registered User
Join Date: Jun 2014
Location: Tahuya WA
Posts: 526
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Re: Warped Water Pump Pulley
I appreciate the reply.
The newer pully doesn't seem to be as far off as the chrome one and I think as long as I sand the groove to rough it up a bit and maybe rough up the belt a little it will eliminate that annoying chirping/squeaking sound, which is what was driving me nuts to begin with. It's really not bad enough for the belt to jump off the pulleys or anything like that, I just can't believe that two off-the-shelf brand new pulleys aren't concentric. (or whatever you would call it) Never saw that in a genuine AC Delco pulley. A neighbor offered me a free billet aluminum pulley (nice of him) but those look like they were designed with separate electric fan(s) in mind as they look like they use tapered head mounting bolts like maybe a wood screw would have. Notice the cool camel hump heads with accessory holes ? They are the 1.94/1.50 but have smaller intake runners for higher mixture velocity at lower RPM and go great with my 3:08 rear gears. Hardened valve seats for unleaded too. |
Yesterday, 03:11 AM | #4 |
Registered User
Join Date: Jun 2014
Location: Tahuya WA
Posts: 526
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Re: Warped Water Pump Pulley
When I attempt to 'edit to add' my phone won't let me scroll down on the script for some reason but I just wanted to agree that you guys are always a great help on this forum.
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Yesterday, 04:35 AM | #5 | |
Registered User
Join Date: Jun 2014
Location: Tahuya WA
Posts: 526
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Re: Warped Water Pump Pulley
Quote:
So to add insult to injury, I decided to replace the lower radiator hose while I was losing this battle anyway and the darn thing wants to kink. I somehow managed to remove the old one without just cutting it off in frustration so I'll bring that to the parts store to use as a template. The only positive thing to come out of this whole disaster is that if you look under the hose by the fuel pump you'll notice a fuel line that I probably put on there when I replaced my inline 6 around 25 years ago and totally forgot existed. Hopefully I be able to replace that without burning the truck to the ground. |
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Yesterday, 11:51 PM | #6 | |
The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,367
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Re: Warped Water Pump Pulley
Quote:
You may need to put a radiator hose spring inside the lower hose to keep it from collapsing..... .
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