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11-04-2020, 04:20 PM | #1 |
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Join Date: Apr 2018
Location: Mebane NC
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Greasing the fan/water pump interface
As described in this thread, water pumps sometimes need to be filed or ground on their snout to fit the I.D. of the 2-blade fan. I've done this on mine, but with the clearance in some spots less than .015, I'm concerned that, due to vibration or deflection under load, the fan may contact the pump housing during operation.
I would like to coat that portion of the housing in some sort of grease that would protect the metal from abrasion and rust. What would folks recommend as a suitable grease that won't migrate away from where I put it? At my bench right now I have the pink Mobil1 grease, plus the Sta-Lube brake drum grease you get with a Randy Gross rebuild, plus some dielectric grease. Any of those good? |
11-04-2020, 05:54 PM | #2 | |
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Re: Greasing the fan/water pump interface
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Ruth "Sometimes you really DO need to read the whole thread" |
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11-04-2020, 06:22 PM | #3 | |
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Re: Greasing the fan/water pump interface
Quote:
So I guess option 2 is to grind it down farther and then just put some Ford green spray paint on it and call it a day. |
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11-05-2020, 09:00 AM | #4 |
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Re: Greasing the fan/water pump interface
This is a technique used in the aerospace industry to bed parts with no gaps. Put a parting agent on the pump shaft. Oil or grease should work. Coat the inside of the taper in the fan with quick-setting JB Weld and install the fan on the shaft. Make sure the fan runs true befoe the JB Weld sets. Allow the JB Weld to fully cure.
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11-05-2020, 10:02 AM | #5 | |
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Re: Greasing the fan/water pump interface
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Quote:
The solution is to grind/file away the OD of the cast water pump snout. My question is, can I grease this "bearing surface" to reduce wear and rust? Or will that attract dirt and end up failing in the purpose – in which case I should just grind it down far enough that the two surfaces will never touch. |
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