GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Do I need to weld my waterpump pulley?

Old Jul 17, 2011 | 03:38 PM
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Default Do I need to weld my waterpump pulley?

Since im adding an I.W. OD crank balancer??

If so where and how are you guys welding them( not looking at one right at this moment LOL)

Thanks.
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Old Jul 17, 2011 | 03:57 PM
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go ahead and weld it. run a bead on the inside of the pulley hub....where it presses onto the shaft.
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Old Jul 17, 2011 | 05:20 PM
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Will do man, thanks for the info/reply!
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Old Jul 17, 2011 | 05:28 PM
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Tig weld it. Mig won't hold.
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Old Jul 17, 2011 | 05:49 PM
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Ok Thanks, thought i read it needed tiged, thats not a problem for me!
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Old Jul 17, 2011 | 10:07 PM
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If you are running an 8-rib, you might want to consider doing something more than just welding the end of the pulley. I did that on mine and this is what failed next...



The new fix was to weld the pulley at the shaft, machined all the threads off, then sleeve a piece of custom machined DOM over the pulley and welded it at the base and the end and that seems to be holding well...

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Old Jul 17, 2011 | 11:28 PM
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At what point does this mod become necessary?
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Old Jul 18, 2011 | 12:47 AM
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When upgrading to 8-rib it is necessary.
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