Water pump noise - Team Camaro Tech
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post #1 of 8 (permalink) Old Jul 12th, 14, 12:06 PM Thread Starter
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Dan
 
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Water pump noise

Need some help. My sbc started to make a knocking noise at the front of the engine. After troubleshooting and pulling the pulley off of the water pump I noticed the main shaft on the water pump that the pulley bolts to has some slack. It also makes the same noise when I push on it and move it around as when the engine was running so I know this is the problem. Question is can that be repaired or should I just replace the pump? It's about 7 years old and the engine has less than 5K miles on it.
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post #2 of 8 (permalink) Old Jul 12th, 14, 01:33 PM
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Re: Water pump noise

Replace the pump... so much easier. WP are not that expensive.
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post #3 of 8 (permalink) Old Jul 12th, 14, 01:51 PM Thread Starter
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Re: Water pump noise

Yeah, that's what I'm doing as we speak. Getting ready to drain the radiator right now.
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post #4 of 8 (permalink) Old Jul 12th, 14, 02:35 PM
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Re: Water pump noise

When you are done, treat yourself to the best Italian restaurant in Vegas...Pieros.
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post #5 of 8 (permalink) Old Jul 12th, 14, 07:24 PM
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Re: Water pump noise

How can the bearings be that bad without the pump leaking?

The only reason to rebuild your pump would be if it was original to the car or correct dated pump. Otherwise just replace it.

Roger

1967 Camaro SS/RS 350/295HP Coupe. First and only owner.
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post #6 of 8 (permalink) Old Jul 12th, 14, 07:43 PM Thread Starter
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Re: Water pump noise

Quote:
Originally Posted by rogerh View Post
How can the bearings be that bad without the pump leaking?

The only reason to rebuild your pump would be if it was original to the car or correct dated pump. Otherwise just replace it.

Roger
Yeah, just picked one up from Oreilly (murray water pump) for $28.00.
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post #7 of 8 (permalink) Old Jul 12th, 14, 09:37 PM
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Re: Water pump noise

Quote:
Originally Posted by rogerh View Post
How can the bearings be that bad without the pump leaking?
I had the same thing. No leaks in the WP, but slack in the main shaft. Was so bad that the fan blades were grazing the shroud with higher RPM's. Was also causing a vibration throughout the cabin between 55-65mph. Replaced and all is good.

67 Black RS Coupe, 383, M21 & 10 Bolt Posi. Edelbrock E-Tech 170 Heads, 2204 Roller Cam, Air Gap Intake.
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post #8 of 8 (permalink) Old Jul 13th, 14, 05:48 AM
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Re: Water pump noise

It's a common test to grab a fan blade or pulley and see if you get movement or clunking out of the shaft. If you do, the pump is not long for this world.


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'67 rs - ordered new by my Grandfather
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