Water Pump Question!

[SVT_BERTO]

Hey guys,

I think I've narrowed down this engine noise to my water pump. Out of curiosity, are there any bearings inside the water pump that could possibly go bad? I'm going to replace the unit anyway but it would make me feel better to know there are wear and tear parts in the pump.

 

[SVT_BERTO]

Here's a video. I had stopped the video when I noticed the belt was not on correctly.


https://www.youtube.com/watch?v=28nOrMiUW6c&feature=youtube_gdata_player

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[cobracide]

The only way I know of to make a bearingless water pump would be through electromagetics. I assure you that is not how the cobras pump is, since it is belt driven.

 

[SVT_BERTO]

I assumed it was shaft driven and didn't have a need for bearings.

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[cobracide]

Take the belt off and spin it. See how it spins.

 

[SlowSVT]

Most likely there is a bronze bushing in there and yes they do wear out.

 

[SVT_BERTO]

Took the belt and pulley off and spun it by hand. Can't feel anything wrong in there.

This is starting to get annoying. I've replaced everything on that drive with the exception of the water pump a p/s pump (yes, new ac compressor).

This noise is driving me nuts!

I've been doing some reading that the 05+ Navigator pums are considered an upgrade. True or false?


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[01cobravortech]

Interesting...I really can't say that I hear anything out of the ordinary in that vid. These motors are very noisy.

 

[SVT_BERTO]

Interesting...I really can't say that I hear anything out of the ordinary in that vid. These motors are very noisy.

My 03 didn't sund like this :shrug:

 

[vr4]

Yes water pumps have ball bearings supporting the shaft from the pulley to the impeller.

 

[SVT_BERTO]

Yes water pumps have ball bearings supporting the shaft from the pulley to the impeller.

Thanks for the info. I'm going to call Tousley tomorrow for a new one.

If that doesn't fix it, I'm selling the Cobra and getting a GT500. **** it.
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[Quick Strike]

Stewart makes a nice replacement pump with more volume and better impellers. Summit has them.

 

[hotcobra03]

wow that is bad...if it isnt a pulley locked up or rubbing i would pull belt and run engine ,,it could be on other side of cover

 

[SVT_BERTO]

wow that is bad...if it isnt a pulley locked up or rubbing i would pull belt and run engine ,,it could be on other side of cover

I lost count of how many times I've had the lower pulley off the car :fm:

When I did run it without the belt the sound was gone. I've purchased NEW OEM pulleys, tensioners, A/C Compressor, Belts, and have rebuilt the snout of my eaton. Did I mention my car only has 38,400 miles?!

I know the new parts give me more peace of mind and I could always sell my old parts to offset what I've spent since they are still in great shape. I would have rather spent this money on mods :rollseyes

 

[SlowSVT]

Yes water pumps have ball bearings supporting the shaft from the pulley to the impeller.

ball bearings in a water pump?

 

[SlowSVT]

Took the belt and pulley off and spun it by hand. Can't feel anything wrong in there.

This is starting to get annoying. I've replaced everything on that drive with the exception of the water pump a p/s pump (yes, new ac compressor).

This noise is driving me nuts!

I've been doing some reading that the 05+ Navigator pums are considered an upgrade. True or false?


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Don't be fooled by how easy to spin and tight a bearings feels when there is no load on it.

 

[hotcobra03]

so vid is with caged lower off,just inner belt..

have you tried to make a change in noise?

spray wd40

turn on ac

turn wheels to full turn,pumping brakes or holding brakes firm

try to take away tension on belt,,

i cant recall if cover has a cutout for pulley ,like if pulley was wrong size and only rubs when belt is on,or belt wrong causing pulley to sit in wrong spot

 

[03cobra#694]

Stewart makes a nice replacement pump with more volume and better impellers. Summit has them.

Any one else have input on this water pump, sorry to jack your thread OP.

 

[SVT_BERTO]

so vid is with caged lower off,just inner belt..

have you tried to make a change in noise?

spray wd40

turn on ac

turn wheels to full turn,pumping brakes or holding brakes firm

try to take away tension on belt,,

i cant recall if cover has a cutout for pulley ,like if pulley was wrong size and only rubs when belt is on,or belt wrong causing pulley to sit in wrong spot

This vid has the lower caged on without the belt on.

I have tried all of the above. There is no cut out and if you reverse the pulley on the tensioner on the timing cover it will rub on the cover and gouge the cover.

I followed the map on CobraBob's FAQ each time I installed the belt to be on the safe side. Needless to say, I'm a pro at it now lol!

 

[SVT_BERTO]

Don't be fooled by how easy to spin and tight a bearings feels when there is no load on it.

Very true. I didn't think of the downward force placed on the pulley from a tensioned belt. Good point :beer: