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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 07-01-2007
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recirculating fuel pump

On the latest Latitudes and Attitudes issue there is an article on the instalation of a recirculating fuel pump and a bypass valve that can direct the fuel back to the tank (p.73). Anybody tried this?
Seems to be a great way to deal with fuel contamination. clearly most boat owners are not aware of problems until they are shaken up by some nasty swells and if they need the engine at that point it's the most likely time to find that the gunk in the bottom is now in suspension and starts to clog up the filters or worse.
It seems like this is much cheaper than a dual filter setup. I'm thinking it would be a good alteration. Any opinions on that?
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Old 07-01-2007
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Zing...using a pump for polishing is a great idea but I would still opt to have a second racor set up since this type of polishing setup is helpful but no guaantee that water and gunk won't still clog you up in rough conditions.
Anyone who has tried to change a racor in the dark...upside down...in 10 foot seas...when you really NEED your engine... knows that a simple turn of a handle is a much better solution. Get the second racor...you'll be happt you did.
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Old 07-02-2007
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I'd agree that a second Racor is still a wise investment, even if you setup the fuel-polishing system you're describing. The fuel polishing system will only treat what it filters... and in heavy weather, the nasty crud at the bottom of the tank can get stirred up and will not have been filtered out by the polishing that occurred in the nice weather.
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Old 07-02-2007
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I got one of these:

FilterBOSS from KTI Systems, Inc.

Does the trick!
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Old 07-02-2007
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Thanks, all good points. The dual racor system is expensive. Nice to have when cruising...
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zingaro....The dual racor system is expensive
pays for itself in one tow!
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Old 07-03-2007
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It also pays for itself if it allows you to keep motoring in rough condtions and keep your boat off the rocks... penny-wise, pound-foolish is good description of people who skimp on their fuel filtering system on a marine diesel powered boat.
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Setting up a "polishing pump" in the boat is a great idea...but I think the price of diesel pumps is what stops most folks from thinking about it. Any electric pump rated for diesel fuel seems to mean another $200++ and then that's just the start.
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I'm sure that this idea has been tossed around before, but along with the dual filter system on our Perkins 6 and Wester gen set, the previous owners had installed two seperate German made dial gauges under the companion way ladder that monitors the condition of the filters and will slowly start needleing up towards the 'red area' as they get clogged. The red area on the gauge signifies that it's time to throw the lever for the 2nd filter and that the 1st one is due for a swap. These seem to be very accurate and has pre-warned us a couple of times prior to needing to motor for any long periods. I don't remember the brand right now, but will let anyone know this month if they're interested.......

Rick
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I don't mean to get too off-topic, but why don't marine fuel tanks have a sump drain that would allow the captain to flush the tank on occasion?
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