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  #1   IP: 172.58.139.46
Old 07-31-2019, 11:26 AM
Dave9111 Dave9111 is offline
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Lower water pump extendo bolt alternative?

Will this work? Or why won't this work as a long bolt for the lower hole of the water pump?

This is a 4 1/2" grade 5, 3/8-16 bolt with a nut tightened/bottomed on the threads.

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This is cheap at less than $2.00. Which is good since I can keep a couple on the boat so when I drop it into the bilge, I can simply put in a second $2.00 replacement.

Getting to that lower bolt with the original short bolt is torture in a Pearson 10M. Especially when the engine is hot and the cabin temp is 90+ degrees.

Dave
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  #2   IP: 32.211.28.40
Old 07-31-2019, 05:45 PM
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Al Schober Al Schober is offline
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Looks like what I made up for my boat. I think I used Loctite on the nut.
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  #3   IP: 24.152.132.140
Old 07-31-2019, 06:22 PM
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In time you'll realize, as the rest of us already have, that MMI products are carefully thought out, of the highest standards and deliver lasting value for the cost. Until then, please consider that there is merit in supporting the business that sponsors this forum that many of us feel is the best forum - boating related or otherwise - on the internet.

https://moyermarine.com/product/lowe...lt-csob_10_89/
http://www.moyermarineforum.com/foru...ead.php?t=3234
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Last edited by ndutton; 08-03-2019 at 03:59 PM.
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  #4   IP: 207.118.20.35
Old 08-03-2019, 02:48 PM
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Oh, it would probably work, but..

I myself have been known to create a cheap alternative instead of a more expensive and elegant one, but not in this case. I have one of those extender bolts. I am willing to spend another $18 to have something specially designed for that purpose. I would gladly fish it out of the bilge. Moyer Marine has been very helpful to us A4 owners over the years, and deserves our support for providing a part that solves a problem.
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  #5   IP: 24.152.132.140
Old 08-03-2019, 03:57 PM
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Examining this MMI product vs. a home grown clone for example:
  • Stainless steel vs. grade 5 steel in an area that is commonly wet and for us ocean guys, wet with salt water. If you think the lower bolt is hard to get to, try extracting a broken bolt stump that's rust-welded into the same location.
  • A sealing washer is included. The home grown re-inventer usually uses a split lock washer then wonders why it leaks when it didn't before. See the first bullet point when that happens.
  • Threaded portion length. If you read the link I provided earlier you'll read about the gear damage that occurs when the threaded portion extends too far into the accessory drive.
Like I said, MMI products are thoroughly thought out and perfect for our needs. As we are fond of saying around here, "Do it right, cry once."**

** Credit: Dave Neptune
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prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Old 08-04-2019, 08:42 AM
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Not to mention that the extendo bolt is a work of art!

For those who don't know what I'm talking about...
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Last edited by edwardc; 08-04-2019 at 08:50 AM.
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