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Old 03-02-2013, 14:49   #76
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Hi noelex

What pump do you use, and can it be plumbed in line with the engine supply line, as one can with the FPM-050? This In case i can't solve the problem and have to ditch the lame Racor Lemmon pump.

Thanks
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Old 03-02-2013, 15:04   #77
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Re: Racor Fuel Polisher

The fuel pump came with boat as spare fuel transfer pump. It's similar to this (see photo)

It has been polishing the fuel for about 5 years now. An average of about 8 hours a day.

About 12 months ago it started sounding it was near the end of its life. I purchased a new Walbro FRC-6. This is a larger pump and has not yet been installed, as the old pump is still working.

I am not sure the larger Walbro pump is a good trade off. A brief test shows it consumes more power and makes more noise (but at higher pumping rate). I will wait until the old dies and let you know if the new larger pump is better.

I can see operating the new Walbo pump for 2-4 hours a day. The amount of fuel polished will be similar, as will the energy consumption, but I suspect the noise of the new pump will be slightly annoying compared to old pump which is normally inaudible from the living areas.
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Old 05-02-2013, 13:54   #78
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Spoke Parker/Racor, they ( in California) agree that excessively viscous diesel most likely culprit. Wait until temps in 40s and repeat test was the recommendation.

That will be a while here in Boston....
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Old 05-02-2013, 15:13   #79
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Re: Racor Fuel Polisher

Head south!

Mine works in Florida.
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Old 06-02-2013, 09:56   #80
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Re: Racor Fuel Polisher

The pump is rated at 50 gals. per day. There are no specs. as to flow rates at different head level. So 0.035 gals. per min. is about 2 drops if you take into consideration the head of 3 or 4 feet. Personally I would take that pump and throw it about as far as I could (probably not far these days) and get a decent pump that is rated for a flow rate of about 50 gals. per hr. at your head of 3 or 4 feet. I'm just guessing at the head level.
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Old 06-02-2013, 11:17   #81
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Re: Racor Fuel Polisher

Hi,

so the head is a very reasonable 24 inches. Not really asking too much, I though. Tank is only 27gall, so I was quite happy with 50USG/day flow. But if the bloody thing won't improve by April, when temps get in the region that would support bacterial growth, then I will see how far I can throw my $300 and let you know my score.

Maybe an olympic event?

Matt
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Old 06-02-2013, 11:35   #82
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Re: Racor Fuel Polisher

Here's my good old diagram again

Google "Jedi fuel system" for full info on my blog.

cheers,
Nick.
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Old 06-02-2013, 12:45   #83
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Re: Racor Fuel Polisher

Wow. Worthy of a Transport Category aircraft system.

I have a copper flaring tool, but no desire to test my skills on it, so how do you make the manifold? Any pics?

Matt
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Old 06-02-2013, 13:36   #84
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Re: Racor Fuel Polisher

Quote:
Originally Posted by DeepFrz View Post
The pump is rated at 50 gals. per day. There are no specs. as to flow rates at different head level. So 0.035 gals. per min. is about 2 drops if you take into consideration the head of 3 or 4 feet. Personally I would take that pump and throw it about as far as I could (probably not far these days) and get a decent pump that is rated for a flow rate of about 50 gals. per hr. at your head of 3 or 4 feet. I'm just guessing at the head level.
One must subscribe to Parker's theory that maintaining clean fuel is easier/better than trying to clean dirty fuel. Plus their claim that high flow filtering does not remove "entrained moisture". Different theory/application requires a different pump.

If you don't buy into the theory, you'll obviously be disappointed by the pump.

Features of the FPM:
- less than 2w of power
- no manifolds
- no additional tank taps
- put it into an existing fuel circuit
- use existing primary filter
- runs automatically if used with optional timer

I've run one for 4+ years and had no fuel problems. But, I didn't have fuel problems before I installed it either, hence I can't prove whether it's snake oil or not. But I do respect Parker engineers, can't speak to their marketing!

YMMV
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Old 06-02-2013, 13:53   #85
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Re: Racor Fuel Polisher

DotDun,

how far above the bottom of the tank is your pump?
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Old 06-02-2013, 14:12   #86
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Re: Racor Fuel Polisher

Quote:
Originally Posted by Tailwheel View Post
DotDun,

how far above the bottom of the tank is your pump?
My pump is actually below the bottom of the tank, the taps are all on the top of my tank. But it really isn't where the pump is located that's important, it's how the plumbing is run. IOW, it doesn't matter where in the circuit the pump is, it's the circuit that matters. (but, it's been a few years since physics class!).

I have to remove the cap on the fuel tank so I can hear the trickle of fuel, and then only when the fuel is down a little (air gap in the top of the tank). But it is a trickle, not 'dripping'.
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Old 06-02-2013, 14:33   #87
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Re: Racor Fuel Polisher

Fair enough, and I agree.

So it sounds like pump doesn't have to suck, but maybe it has to blow. Does the return empty (as I suspect) at the top of the tank? If so, then how high is the column the pump must force up to the top of the tank?

Tx

Matt
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Old 06-02-2013, 14:50   #88
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Re: Racor Fuel Polisher

Quote:
One must subscribe to Parker's theory that maintaining clean fuel is easier/better than trying to clean dirty fuel. Plus their claim that high flow filtering does not remove "entrained moisture". Different theory/application requires a different pump.
So the whole sales pitch about the turbine and the Parker filters is just that, a sales pitch and nothing else? The Racor literature says this about that.
Quote:
Racor's Turbine Series Fuel Filters are available in (3) model sizes the 500, 900, and 1000.

All models are available in (3) distinct filtration levels. As a 30 micron element (primary filtration), a 10 micron element (primary/secondary filtration), or a 2 micron element (final filtration).

The 500 series supports flow rates upto 60 GPH (227 LPH).

The 900 series supports flow rates upto 90 GPH (341 LPH).

The 1000 series supports flow rates upto 180 GPH (681 LPH).

Each filter assembly is designed to be installed on the vacuum side of the fuel transfer pump for highest efficiency and greatest engine protection from dirt, rust, algae, asphaltines, varnishes, and especially water. (emphasis is mine DF)
TURBINE SERIES - FUEL FILTER/WATER SEPARATOR (MARINE) - Parker

Their literature also says this.
Quote:
Marine Turbine Series filter assemblies
are designed to be installed on the
vacuum side of the fuel transfer
pump for best efficiency and protect
precision engine components
from dirt, rust, algae, asphaltines,
varnishes, and especially water, which
is prevalent in engine fuels. They
remove contaminates from fuel using
the following legendary three stage
process:
Stage One: Separation
As fuel enters the filter assembly,
it moves through the centrifuge
and spins off large solids and water
droplets which fall to the bottom of the
collection bowl.
Stage Two: Coalescing
Small water droplets bead-up on
the surface of the conical baffle and
cartridge element. When heavy
enough, they too fall to the bottom of
the bowl.
Stage Three: Filtration
Proprietary Aquabloc®II cartridge
elements repel water
and remove
contaminants from fuel down to 2
micron (nominal). They are waterproof
and effective longer then water
absorbing elements.
Again, the emphasis is mine.
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Old 06-02-2013, 15:01   #89
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Re: Racor Fuel Polisher

Quote:
Originally Posted by Tailwheel View Post
Fair enough, and I agree.

So it sounds like pump doesn't have to suck, but maybe it has to blow. Does the return empty (as I suspect) at the top of the tank? If so, then how high is the column the pump must force up to the top of the tank?

Tx

Matt
Now you made walk out to the boat!

The top of my pump is right at the bottom of the tank level (horizontally ~3' away). My tank is ~23" tall, so the pump has to push the fuel ~24" up the return line.

I don't know how lifting the fuel inside the tank taps affects the pump on the suck side but would guess it's almost a freebie once the air is out.
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Old 06-02-2013, 15:15   #90
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Re: Racor Fuel Polisher

Thanks DotDun,

who ever said going out to the boat was a hardship.... well, until it reminds you of that job you still need to do.

So looks like there's a chance it should do the job. One more reason to look-forward to warmer weather: testing the polishing pump.

Matt
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