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Old 07-09-2018, 05:17 AM   #61
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It is normal that liquid pumps push better than they pull.

The use of a rubber bulb is a far better idea than any electric pump if needed before a filter bank.

The electric pump can easily mix any water with the fuel making the filters work much harder.

The rubber hand pump will do less shredding and mixing , so is probably a better installation, although an electric pump would be fine if pulling rather than pushing.
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Old 07-11-2018, 12:25 PM   #62
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You are correct. However, if I were to open up the fuel lines ahead of the filters in order to install the squeeze bulb, I would end up making a mess. I'm not a very accomplished mechanic and can find new and interesting ways to make a mess of things.
Isnít there a shutoff valve at the tank?
In most usual circumstances, you will only be dealing with a cup full or so of diesel fuel. Cover the area with oil absorbent diapers and get a catch container handy and do it. Spray som Fabreeze when youíre done!
A squeeze bulb is incredibly simple and effective, gives much better control than a motorized pump when performing potentially messy tasks like topping off a Racor.
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Old 07-12-2018, 08:44 PM   #63
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Is it OK to use nylon hose barbs in my fuel filtering system? I'm having a hard time finding brass 3/8 inch, ID, 90's??
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Old 07-12-2018, 08:52 PM   #64
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Is it OK to use nylon hose barbs in my fuel filtering system? I'm having a hard time finding brass 3/8 inch, ID, 90's??
Not sure of the fitting you are searching for but here great chance you will find

https://www.new-line.com/fittings/br...ss-barb-x-mnpt

Also instead using barb why not to get hose made with flare or JIC fittings?

L
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Old 07-13-2018, 05:31 AM   #65
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Wait till the "brass doesn't belong on a boat" police wake up.....
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Old 07-16-2018, 02:13 PM   #66
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Seaboard has many good ideas and products

https://www.sbmar.com/articles/marin...-seaboard-way/

Here are two racor 1000s with switch on a mainship



https://photos.google.com/photo/AF1Q...KUZu6BfRIxujA0
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Old 07-16-2018, 07:47 PM   #67
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Seaboard has many good ideas and products

https://www.sbmar.com/articles/marin...-seaboard-way/

Here are two racor 1000s with switch on a mainship



https://photos.google.com/photo/AF1Q...KUZu6BfRIxujA0
There are unlimited different ways of filtering fuel but I think Tony is right on the money with his simple but effective approach and using a minimum of 3 stages with progressively finer filter media ending up at 2-5 microns. There is not a lot wrong with a $3000 Racor or Reverso pre made system but you can end up with a better system that can fit a smaller space for a few hundred with some thought and work. My 40 year old Farrel 40' has a 120 HP Mitsubishi 6D14 and 2 250 gallon fuel tanks. No water in the sumps and decently clean fuel but I wanted to design a fuel polishing system that gives me the ability to completely empty one tank and filter it into the other tank when the fuel level is below 1/2. With 2 ball valves on a T I can select the source and with a $150 Stewart Warner 60 gph pump I can draw all the fuel through a common and cheap Fleetguard FS1212 as a 20 micron pre filter, then through a Racor 900 with 10 micron water repelling element, and finally after the pump, through a huge Cat 26 gpm, 5 micron 1R 0755 with hand primer pump that I was given. These are used on 3512 and 16s in 3-400 ton rock trucks with 2-3000 hp. With a selector valve after the 755, I can return to tank(s) or pressure feed to the engine filters as an alternate source and to bleed engine filters. I have a 3 way switch to be able to turn the pump on/off in the er or the helm as well as a master at the helm. The pressure gauge after the pump and before the 755 shows 4-5 psi so if the pre filters are plugging, pressure drops, and if pressure rises, the 755 must be plugging. The whole system, including new 1R0749 Cat 2 micron final engine filter (which is used on most Cat truck engines and lots of Cat equipment and available everywhere as well as in other brands), cost about $300 plus some hose and fittings for a system that gives me lots of filter capacity and lots of options when underway. The filter bases are from NAPA for about $25 with one inch and 14 tpi. I will still add a second remote pressure gauge to watch filter condition while underway. Tony's suggestion of a mechanical timer on the circulating pump is very good too.

If anyone wants pics or info I will email from my phone
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Old 07-25-2018, 10:55 AM   #68
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Makes sense. Mine is pretty simple, but I added labels as well. Iíve been known to make mistakes when distracted.


Havenít we all. Simple and well labeled. As a pilot how many have feathered the wrong engine at the most inopportune time. The silence is incredible.
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