496 raw water pump problems
#41
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I've bought a couple of the Aftermarket Marine rebuild kits (bearings, seals, shaft, etc) and had problems with the machined tolerance of the shafts. Everything fits and goes together nicely, but the press on the pully is too light. To resolve the problem I used an old shaft on one pump and welded the pulley onto the other (it is now disposable). Have you remedied this problem?
#42
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a Youtube video on the install would be a great idea, I still have the stock water pump, I just changed the impeller last year, I am new to boating and the 496 and made the mistake of trying the air pump system without knowing about how it really worked, I started the motor before releasing the pressure from the pump system so im wondering if i damaged the impeller. Im sure it cant hurt to change the impeller for routine maintenance anyway, the only thing that sucks is that I dont have a whole lot of room to get to it (Checkmate Convincor 270 + 6'1" at 255 lbs = not a lot of room) I had my local marina change it for me last year and they took the back seat out and charged me $300 just for that, I enjoy doing my own work, and take pride in it, but I need to learn more, I love Youtube videos, especially in the winter, they give me something to do during the winter months and I love to learn as much as I can.
#43
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a Youtube video on the install would be a great idea, I still have the stock water pump, I just changed the impeller last year, I am new to boating and the 496 and made the mistake of trying the air pump system without knowing about how it really worked, I started the motor before releasing the pressure from the pump system so im wondering if i damaged the impeller. Im sure it cant hurt to change the impeller for routine maintenance anyway, the only thing that sucks is that I dont have a whole lot of room to get to it (Checkmate Convincor 270 + 6'1" at 255 lbs = not a lot of room) I had my local marina change it for me last year and they took the back seat out and charged me $300 just for that, I enjoy doing my own work, and take pride in it, but I need to learn more, I love Youtube videos, especially in the winter, they give me something to do during the winter months and I love to learn as much as I can.
For now, here is a video of the test we did on the pump back in June of 2011.
[YOUTUBE]http://www.youtube.com/watch?v=Ks-SwVgu90o&feature=results_video[/YOUTUBE]
#44
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a Youtube video on the install would be a great idea, I still have the stock water pump, I just changed the impeller last year, I am new to boating and the 496 and made the mistake of trying the air pump system without knowing about how it really worked, I started the motor before releasing the pressure from the pump system so im wondering if i damaged the impeller. Im sure it cant hurt to change the impeller for routine maintenance anyway, the only thing that sucks is that I dont have a whole lot of room to get to it (Checkmate Convincor 270 + 6'1" at 255 lbs = not a lot of room) I had my local marina change it for me last year and they took the back seat out and charged me $300 just for that, I enjoy doing my own work, and take pride in it, but I need to learn more, I love Youtube videos, especially in the winter, they give me something to do during the winter months and I love to learn as much as I can.
#45
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Its in storage right now, but for the few bucks it takes to change it, I would like to just for a little added insurance, I would rather spend a couple hours and a few bucks at the beginning of the year then to be towed off the lake, Im just hoping I can get to it, like I said there is not a whole lot of room for me to fit in there.
#46
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Seawater pump 496 mercruiser machining
Its in storage right now, but for the few bucks it takes to change it, I would like to just for a little added insurance, I would rather spend a couple hours and a few bucks at the beginning of the year then to be towed off the lake, Im just hoping I can get to it, like I said there is not a whole lot of room for me to fit in there.
Measure or know the mercruiser spec . Thanks
#47
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I have not read every post in this thread about the pump. Here's the deal throw the Merc away; buy one from Hardin Marine with pulley about $500 It is rebuild- able, I have used a few of them.
#49
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#50
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I think this one fits the 496 also and is only $190 list. I think I bought mine from CP Performanve. Either way, the plastic has to go!
http://www.hardin-marine.com/p-14544...rhaul-kit.aspx
http://www.hardin-marine.com/p-14544...rhaul-kit.aspx