Gary, your story reminds me of a problem I had, same drill, overheating with no ascertainable cause..(after much searching), then one day it got so bad I thought that maybe there was something blocking the intake opening in the bottom of the hull; there was; I found that there were microballoons from when some previous owner (not me) had faired the hull and had closed up the hole by about 80 percent! I cleaned it out and became a very happy camper, er, ...boater after that!
Richard 1987 33-II and ... Richard N. Bush Law Offices 2950 Breckenridge Lane, Suite 9 Louisville, Kentucky 40220 502-584-7255 -----Original Message----- From: Gary Nylander <gnylan...@atlanticbb.net> To: cnc-list <cnc-list@cnc-list.com> Sent: Wed, Dec 4, 2013 9:44 am Subject: Re: Stus-List Impeller link to photo I have a raw water cooled 2QM15. Off and on over the 19 years I have owned her, I have had weird cooling problems, usually after I have run for a while, then sail, and then turn on the motor to go home - it squeals from what appeared to be overheating. It got worse. I chased down the entire cooling system more than once. Replaced the input hose, made sure everything was clear from the input to the exhaust.....not much help. The old exhaust riser (iron pipe) finally failed and I had a new one built. Still a problem even with the new hose. I was looking at everything.... it got very bad...checked the water pump and found the impeller was toast. Took all the pieces home and glued them together to make sure I had all the parts - still had an overheating problem with a brand new impeller - remember, I had checked everything in the system and it was OK.... Changed the sensor..no help...changed the zincs... no help... was just about to take the head off. Looked (again) at the hoses from the water pump into the engine. The hose leading to the zinc on the front (bow end) of the engine was mostly clogged with a very rusty piece of an impeller. I have been replacing my impellers rather regularly for the 19 years I have owned the boat. I have never had a bad impeller until this latest one (which I had all the parts of). I wonder if there has been this hard, rusty piece of an impeller in there all this time???? Pulled the damn thing out and the water flow is better than it has ever been! As was stated - find the pieces!!!! Gary ----- Original Message ----- From: Josh Muckley To: cnc-list@cnc-list.com Sent: Tuesday, December 03, 2013 9:47 PM Subject: Re: Stus-List Impeller link to photo Some one already mentioned it but, make sure you find all of the little pieces of rubber from the impeller. Hopefully none of them made it past the heat exchanger. You might find a shop-vac helpful. Josh On Dec 3, 2013 8:40 PM, "Kevin Driscoll" <kevindrisc...@gmail.com> wrote: Apologies for my links not working. You should be able to see impeller and Osprey's stern here at dropbox: https://db.tt/PcqiFwLs Thanks for helpful info. Going to buy one of those belt tension jacks for sure! Kevin 30-2 Sent from a mobile device. _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ his List is provided by the C&C Photo Album ttp://www.cncphotoalbum.com nc-l...@cnc-list.com
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