Water pump gear crisis

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Write2Paul90277
Posts: 12
Joined: Mon Sep 09, 2013 2:41 am
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Water pump gear crisis

Post by Write2Paul90277 »

Ah, yes, the elusive OEM nylon water pump driven gear -- fragile, fickle and nearly impossible to find.

I'm in search of said gear (17522-31031) and the only one I've found costs $217 US on eBay.

I found one guy in the US who makes/sells machined aluminum ones for $120 US -- a bargain by comparison.
https://chrislivengood.net/product/gt75 ... pump-gear/
I contacted him through his website but have not heard back yet.

Has anyone found any other sources for OEM or aluminum water pump gears?

Thanks much,

Paul
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Alan H
Posts: 11457
Joined: Fri Aug 05, 2011 6:38 am
Location: Wombwell, Republic of South Yorkshire

Re: Water pump gear crisis

Post by Alan H »

Aluminum? We only have Aluminium here.
Proof that four strokes are over complicated
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BAZ
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Joined: Thu Jun 18, 2009 7:35 pm
Location: Dudley west midlands
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Re: Water pump gear crisis

Post by BAZ »

Don't worry always split never fail I have built 150 Kettle engines.
Twowheelman
Posts: 22
Joined: Sat May 13, 2017 6:39 pm

Re: Water pump gear crisis

Post by Twowheelman »

Legend motorcycles has them for £70 on ebay
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Write2Paul90277
Posts: 12
Joined: Mon Sep 09, 2013 2:41 am
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Re: Water pump gear crisis

Post by Write2Paul90277 »

Thanks! I found the listing and ordered one. What a relief to know I won’t be gambling on using my old, cracked gear and wondering when the time bomb will explode!

Trivia question: Is it my failing memory, or do I recall hearing that some guys have removed the water pump altogether and relied solely on thermosiphon action to keep the engine cool?

Curious minds want to know!
Twowheelman
Posts: 22
Joined: Sat May 13, 2017 6:39 pm

Re: Water pump gear crisis

Post by Twowheelman »

I wouldn't think so buddy, IMHO the Kettle would boil at the cylinder head :lol: :lol: :D
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