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Coolant Leak out of mysterious hole

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Old Jan 28, 2025 | 01:03 PM
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Coolant Leak out of mysterious hole

Hey folks!

First post here. I have a question regarding a coolant leak that sprung from a 1998 Superhawk. I maintain a collection of bikes that are almost all brand new/0 miles. This bike is a bit of a peach. Shes never been ran and about as new as it can get. There’s a hole right behind the water pump that the coolant decided to **** out of. The plan is to dry the bike out and put back into the collection (blasphemous in know). The collector has no intent to run the thing so we’re not going to take the clutch side apart to figure out what’s going on. Just figured I’d throw it out there to see what the pros have to say. Any input is appreciated!
Old Jan 29, 2025 | 06:04 AM
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Pump seal is leaking. The hole is to give the coolant an escape route. If it's going to be repaired, the case cover comes off.
Old Jan 29, 2025 | 08:45 AM
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Originally Posted by xeris
Pump seal is leaking. The hole is to give the coolant an escape route. If it's going to be repaired, the case cover comes off.
I see! Leave it to Honda to think ahead. Feel like most manufacturers would just let coolant blow by and make it the owners problem when they start to overheat. Thanks!
Old Jan 30, 2025 | 11:31 PM
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In 98 when relatively new, I had a few drips out that port, and maybe since VERY infrequently since, and we're at 111K miles (knock on plastique) now!

I've used this for decades now
https://crpautomotive.com/wp-content/uploads/2020/06/Pentosin-Product-Data-Sheet-Antifreeze-Pentofrost-A3-1.pdf https://crpautomotive.com/wp-content/uploads/2020/06/Pentosin-Product-Data-Sheet-Antifreeze-Pentofrost-A3-1.pdf
and [url=https://www.amazon.com/UView-550000-Airlift-Cooling-Checker/dp/B0002SRH5G), I add a cooling system corrosion-lubricant additive to supplant [ame]https://www.amazon.com/UView-550000-Airlift-Cooling-Checker/dp/B0002SRH5G[/ame]

Last edited by skokievtr; Jan 30, 2025 at 11:40 PM.
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