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Go Back   SailNet Community > Boat Builders Row > Pacific Seacraft > Removing Hot Water Heater
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Thread: Removing Hot Water Heater Reply to Thread
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Topic Review (Newest First)
5 Hours Ago 10:15 AM
DaveMancini
Re: Removing Hot Water Heater

You are right about that. I scratch my head every day!
14 Hours Ago 01:19 AM
RainDog My engine is a 3hm35. It makes no sense to me how that caused an air lock, but that is boats.
15 Hours Ago 12:33 AM
DaveMancini
Re: Removing Hot Water Heater

Very interesting. I haven't had a problem in seven years, mostly in the tropics. I usually top off at the fill cap, fill the surge tank to between the lines, run the engine for 20 minutes, then add to the surge tank if necessary, but I've never had to add more than a cup. So, I wonder what gives?

Is the engine a 3JH2E?

Dave Mancini
PSC34 #305 "Swan"
20 Hours Ago 07:13 PM
RainDog
Re: Removing Hot Water Heater

I am confident this airlock is what caused the overheating. I only had about half as much coolant in the engine as I should have. This kept it from keeping the engine cool due to too much air in the system. This made it overheat. My engine had no temp gauge, and the temp alarm apparently did not work. Due to this I did not notice it was overheating until it was too late.

The fix was to bleed the air from the system, and install a proper temperature gauge. Before I bled it, it was only taking half a gallon of coolant. One I bled it, it took almost a whole gallon. It will take more than this if you have the water heater.
21 Hours Ago 06:02 PM
wsmurdoch
Re: Removing Hot Water Heater

I read you all's posts on your blog and on cruisersforum. When you get to the place where you think you know the whole story of the overheating, please post it here.

Bill Murdoch
1988 PSC 34
Irish Eyes
21 Hours Ago 05:39 PM
RainDog I added the hose from the outlet to the inlet like Dave did and it ended up creating a coolant air lock. Just wanted to add a note to warn anyone that does this to check engine temp afterwards. I had to detach one end of the hose while filing the coolant to break the lock.
09-29-2013 07:11 PM
34crealock
Re: Removing Hot Water Heater

Good Dave, the inverse( staying in Maine) being my reason to retain the water heater.
09-29-2013 01:18 PM
DaveMancini
Re: Removing Hot Water Heater

Not having a water heater is my excuse for sailing in warmer climes.
09-29-2013 07:06 AM
34crealock
Re: Removing Hot Water Heater

I'm not sure I am of the same mindset. After a few days of 25knot winds, quartering seas, lots of salt spray , 50 degree days and 40 degree nights I really enjoyed a steaming hot shower. I think I'll suffer with the hot water heater for a while longer since it was great to have on the 6 day Maine cruise I completed yesterday.
09-27-2013 12:42 AM
YankeePSC34
Re: Removing Hot Water Heater

This month I removed the water heater, the surge tank and all coolant hoses. I was happy to get rid of the stinking monster. I installed a short cut in the potable water hoses. I also plugged the two ports in the coolant pump housing with 3/8” plugs I got from the guys in my local Yanmar shop. New engines come with the plugs installed. They take them out when installing a water heater . I still have the surge tank and the bleeding valve available. If somebody wants them please contact me with a private message.
Presently I am installing 4 golf cart batteries following Brian’s (S/V Indigo) solution. I am still in awe that he figured that out. Brian, big thank you for your help.
Earlier this month I installed two 85W solar panels, and, being a fan of proven solutions, I followed Dave’s (S/V Swan) design for the support framing. All worked very well and me and my dock neighbors like the easy looking structure. Dave, big thank you for your help too.
Finally a thank you to Raindog because if you would not have started this thread, I would still be trying to figure out a solution to my energy improvement needs.
Wolfgang
PSC34 Yankee #274
Rock Hall, MD
This thread has more than 10 replies. Click here to review the whole thread.

 
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