Just bought my first sail boat and trying to get answers to a few questions. Everybody told me to get an etra impeller for the 27 hp Yanmar. So I did..... What are the signs that let you know to replace it? I also have water in the area just below the engine. I "sponged" it out, but it is back again. Is it normal for it to be in there? Where might it be coming from? Thanks...
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new boat
the water below your engine is from the drip in your stuffing box (around your propeller shaft) its normal,if you didnt have water thier it probly wouldnt be a good thing. good choise for a first boat.
the water below your engine is from the drip in your stuffing box (around your propeller shaft) its normal,if you didnt have water thier it probly wouldnt be a good thing. good choise for a first boat.
impeller
You should have an extra impeller on board. I would suggest that you change the one that you have on your new boat, if you have no record of when it was replaced last (oh, don't for get that gasket). I like to replace mine at the beginning of the season. It mostly depends on how you run your engine.
You should have an extra impeller on board. I would suggest that you change the one that you have on your new boat, if you have no record of when it was replaced last (oh, don't for get that gasket). I like to replace mine at the beginning of the season. It mostly depends on how you run your engine.
Water under engine.
The drip from the stuffing box should be just a drip. If the water quantity seems excessive check for a water pump leak as well.
The drip from the stuffing box should be just a drip. If the water quantity seems excessive check for a water pump leak as well.
Owned a H35.5
I owned a H35.5 for six years--it is a great boat, possibly one of the best that Hunter has made. However, my pan beneath the engine was always dry. The water from the stuffing box went under this pan and went directly into the bilge. I agree that some water from the stuffing box is good but not under your engine. I would check your hoses and look for leaks from your engine cooling system. I put a oil diaper under my engine and it was alway dry. As for the impeller, I always changed it every two years as I used the engine alot during cruising season. It is a cheap insurance. Carry extra filters and oil as well. Les
I owned a H35.5 for six years--it is a great boat, possibly one of the best that Hunter has made. However, my pan beneath the engine was always dry. The water from the stuffing box went under this pan and went directly into the bilge. I agree that some water from the stuffing box is good but not under your engine. I would check your hoses and look for leaks from your engine cooling system. I put a oil diaper under my engine and it was alway dry. As for the impeller, I always changed it every two years as I used the engine alot during cruising season. It is a cheap insurance. Carry extra filters and oil as well. Les
Source of leak
Drip from the stuffing box SHOULD be going under the engine pan as pointed out. Dry the pan thoroughly, and put some brown paper, or similar, under your engine. After a while (Not too long, so the entire paper is saoked!), see if you can identify the source of the leak by seeing where the water came from. May just be a hose connection, or something simple, we hope...
Drip from the stuffing box SHOULD be going under the engine pan as pointed out. Dry the pan thoroughly, and put some brown paper, or similar, under your engine. After a while (Not too long, so the entire paper is saoked!), see if you can identify the source of the leak by seeing where the water came from. May just be a hose connection, or something simple, we hope...
Check Overflow Tank
Overflow tank on my boat was below the radiator cap. During the cycle of heating and cooling, usually after I shut off the engine, the water would blow back out the overflow, even though I hadn't overfilled the system. Solved the problem by raising the overflow tank.
Overflow tank on my boat was below the radiator cap. During the cycle of heating and cooling, usually after I shut off the engine, the water would blow back out the overflow, even though I hadn't overfilled the system. Solved the problem by raising the overflow tank.
Replace the impeller NOW
Brian: You should replace the impeller right away. The old impeller (if it's in good shape) can be saved for an emergency spare. If it is brittle or cracked you might think about getting another one as a spare. The packing gland will weap when the engine runs, 1-3 drops per minute. It should not leak at all when the shaft is not turning. I would recommend that you have a professional repack it for you the first time. You should also consider a shaft seal (PSI brand). They are about $175 plus installation and then you will not have any leaking even when running. If you decide NOT to go with a shaft seal, ask about teflon packing. As far as the water under the engine, I am not familiar with your model so these other posts should point you in the right direction. I must assume that your engine has been serviced. New oil, fuel and air filters. Be sure to keep your fuel clean and add biocide everytime you refuel. The biocide keep alge from growing in your tank. You should also try to keep your tank topped off. This keep condensation from forming in the tank which is how the alge get there to begin with. Make sure that your engine can rev to 3600-3900 rpm's in neutral. When you are under power you should be able to get 3400-3600 rpms from this engine. These engines should be run at 2800 rpms when cruising. This will get the optimum cooling and max fuel economy. If you run the engine for extended periods of time at low rpms (1800-2400) it will cause coking of the mixing elbow. If you run it over about 3100-3200 for extened periods it will cause overheating. Valve adjustments every 500 hours. Take care of this engine and it will last *forever*.
Brian: You should replace the impeller right away. The old impeller (if it's in good shape) can be saved for an emergency spare. If it is brittle or cracked you might think about getting another one as a spare. The packing gland will weap when the engine runs, 1-3 drops per minute. It should not leak at all when the shaft is not turning. I would recommend that you have a professional repack it for you the first time. You should also consider a shaft seal (PSI brand). They are about $175 plus installation and then you will not have any leaking even when running. If you decide NOT to go with a shaft seal, ask about teflon packing. As far as the water under the engine, I am not familiar with your model so these other posts should point you in the right direction. I must assume that your engine has been serviced. New oil, fuel and air filters. Be sure to keep your fuel clean and add biocide everytime you refuel. The biocide keep alge from growing in your tank. You should also try to keep your tank topped off. This keep condensation from forming in the tank which is how the alge get there to begin with. Make sure that your engine can rev to 3600-3900 rpm's in neutral. When you are under power you should be able to get 3400-3600 rpms from this engine. These engines should be run at 2800 rpms when cruising. This will get the optimum cooling and max fuel economy. If you run the engine for extended periods of time at low rpms (1800-2400) it will cause coking of the mixing elbow. If you run it over about 3100-3200 for extened periods it will cause overheating. Valve adjustments every 500 hours. Take care of this engine and it will last *forever*.
Water?
If it's like my L37, baring any other leaks, then the stuffing box drip will run into the catch basin under the engine. This is normal. The basin will overflow into the bilge and be pumped out from there.
If it's like my L37, baring any other leaks, then the stuffing box drip will run into the catch basin under the engine. This is normal. The basin will overflow into the bilge and be pumped out from there.
My 42 is also wet on the inside
I just posted a similar question concerning water under the engine on my 42...check the big boats forum for the thread. Net is, I don't think this should be filling up with water (took out over 3 gals Sunday) and I plan to figure it out. I like the brown bag suggestion, will also hose down the cockpit looking for leaks. As for the 27 horse Yanmar, I had one on an Irwin Citation, my buddy has one on his Nantucket 38. Suggest you do all service and adjustments, or pay for one good run-through. You can drive this engine up trees if you take care of it. Welcome to our hobby!
I just posted a similar question concerning water under the engine on my 42...check the big boats forum for the thread. Net is, I don't think this should be filling up with water (took out over 3 gals Sunday) and I plan to figure it out. I like the brown bag suggestion, will also hose down the cockpit looking for leaks. As for the 27 horse Yanmar, I had one on an Irwin Citation, my buddy has one on his Nantucket 38. Suggest you do all service and adjustments, or pay for one good run-through. You can drive this engine up trees if you take care of it. Welcome to our hobby!
Too much water ... here's what to check
I've got a 35.5 and water in the pan under the engine is not normal. Go into your aft cabin and take up the board that will expose the area with the shaft. There is a 'pooling' area formed in in the glass of the bottom of the boat under the stuffing box. If that is full of water, the overflow will run into the pan under the engine (although others reported differently, that's clearly how my boat is built). So, if that area is overflowing, you're taking on water in that area behind the engine, and if that area is dry or relatively dry, you're leaking water from the engine. If leaking water from the engine, run the engine and check all of the connections that move the water until you find the leak. More than likely, though, you're leaking from behind the engine. You may need to tighten your stuffing box. I keep mine tight enough so that it's dry while the engine is stopped, and drips infrequently while running. You can tighten it to slow the flow rate, but be careful that it has enough water coming into it to keep it cool. After tightening it, and running the engine for a 1/2 hour or so if it's too hot to touch, then it's too tight. If the box isn't leaking, the next logical thing would be the raw water strainer, which is a bronze filter just aft of the raw water intake. This has to be carefully tightened or it will leak. Next thing to look for are the hose connections to the through hulls back in this part of the boat. Your water's guaranteed to be coming from one of these places, unless you've ruptured your holding tank and it's leaking into the boat, but your nose would have already told you that... You've bought a really great boat, that's a very good combination of performance and comfort. Congratulations! Feel free to email me with any questions. Mark
I've got a 35.5 and water in the pan under the engine is not normal. Go into your aft cabin and take up the board that will expose the area with the shaft. There is a 'pooling' area formed in in the glass of the bottom of the boat under the stuffing box. If that is full of water, the overflow will run into the pan under the engine (although others reported differently, that's clearly how my boat is built). So, if that area is overflowing, you're taking on water in that area behind the engine, and if that area is dry or relatively dry, you're leaking water from the engine. If leaking water from the engine, run the engine and check all of the connections that move the water until you find the leak. More than likely, though, you're leaking from behind the engine. You may need to tighten your stuffing box. I keep mine tight enough so that it's dry while the engine is stopped, and drips infrequently while running. You can tighten it to slow the flow rate, but be careful that it has enough water coming into it to keep it cool. After tightening it, and running the engine for a 1/2 hour or so if it's too hot to touch, then it's too tight. If the box isn't leaking, the next logical thing would be the raw water strainer, which is a bronze filter just aft of the raw water intake. This has to be carefully tightened or it will leak. Next thing to look for are the hose connections to the through hulls back in this part of the boat. Your water's guaranteed to be coming from one of these places, unless you've ruptured your holding tank and it's leaking into the boat, but your nose would have already told you that... You've bought a really great boat, that's a very good combination of performance and comfort. Congratulations! Feel free to email me with any questions. Mark
what year boat?
as mark points out excess from your stuffing box WILL overflow into your engine compartment on at least the 89 model. the newer models im not sure of. this could be one of the few design flaws of that boat. as for pump replacement change it out now then change it out every two years, whether it needs it or not. waiting till it fails gould cast alot more then the impeller.
as mark points out excess from your stuffing box WILL overflow into your engine compartment on at least the 89 model. the newer models im not sure of. this could be one of the few design flaws of that boat. as for pump replacement change it out now then change it out every two years, whether it needs it or not. waiting till it fails gould cast alot more then the impeller.
Thanks
And thanks for all the advice. I have really fallen in love with this sport and hope to be as "handy" with my boat as you all seem! Tnaks Again.....
And thanks for all the advice. I have really fallen in love with this sport and hope to be as "handy" with my boat as you all seem! Tnaks Again.....
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