How to: Short Nose Water Pump

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olei

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olei submitted a new Article:

How to: Short nose water pump

Hi,

I would like to show how I made myself a short nose water pump. Having issues with water pump to radiator clearance and not being able to move the radiator is the reason why I did this. Doing this made me able to get the water pump 3/4" shorter.

Parts used;
FlowKooler water pump, part no. 1700
Shaft and bearing, part no. WKN2541-1
Seal, part no. 206U
I bought the shaft/bearing and seal from Kellogg Automotive.
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You will need to have access to both mill and lathe. What I did was to shorten the top of the nose, and make the bearing counterbore deeper into the housing.
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I also made various tools for easy reassembly. I also made a tool to get the seal preload correct; http://kelloggautomotive.com/pdf/Seal Installation Guide.pdf
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Finished product
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Last step was to shorten the water pump pulley to the correct depth. I made a new flange and welded it at the correct depth on the pulley.

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Before modification
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Read more about this article here...
 
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Very nice; that is very good work and fabrication. It looks like the bearing length is the same so the loads won't stress it any more or wear it out any faster.
 
Very nice; that is very good work and fabrication. It looks like the bearing length is the same so the loads won't stress it any more or wear it out any faster.
----------------------good old American ingenuity !!
 
Has anyone been able to do this modification on a slant 6 water pump?
 
I ran into a similar issue when I used a later aluminum water pump on my 1965 Dart 273. It is ~1" thicker than the correct cast-iron water pump. I only did so to match the only radiator Autozone could get, for a 1972 Dart w/ water pump inlet on the opposite side. I finally rigged a fan to fit, but no room for a clutch fan. That also led to fun with the belt routings, but finally got things to fit.
 
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