Fuel polishing

eric freedman

There is nothing behind the valve except the white plastic screen.
You will need a VERY thin wrench to disconnect the shut off valve from the
fuel pipe.
We used to call that type of wrench a tappet wrench. I could only get it (as
it is metric) from McMaster Carr. I believe that our filters stay so clean
as the fuel is drawn off the bottom of the tank. Thus, you never get a
biology experiment growing in your yank- unlike US boats that have a pickup
tube and allow stuff to build up in the tank.

With careful use of a soft copper pipe as your pickup tube on the "tank
vacuum" you can get to almost all of the tank from the forward inspection
port as there are holes very low in the baffles that allow the pipe to snake
into the other chambers.

I have attached a pix of the Racor system used to pre filter the fuel.
Mine is identical to this one from Ian & Judy Jenkins amel Pen Azen.

Fair Winds,
Amel Super Maramu #376 Kimberlite

-----Original Message-----
From: amelyachtowners@yahoogroups.com
[mailto:amelyachtowners@yahoogroups.com] On Behalf Of amelliahona
Sent: Tuesday, March 07, 2006 9:37 PM
To: amelyachtowners@yahoogroups.com
Subject: [Amel Yacht Owners] Re: Speed vs. RPM

Great idea Eric. I really hadn't thought of doing this my self but it
sounds rather straight
forward. Do you know if there is a stand-pipe of some sort that sticks up
inside the tank
at the bottom of the tank where the fuel outlet goes to the shut off valve?
I have been
careful with all the fuel I have put in my tank but even so I am surprised
at how little
shows up in my Racor filters and wonder if there is time bomb waiting to go
off with
retained material in the bottom of the tank.

Fair Winds,
Amel Super Maramu #376 Kimberlite

Thanks, Gary

--- In amelyachtowners@yahoogroups.com, eric <kimberlite@...> wrote:

The fuel polishing is very simple and can be done with a 500-turbine Racor
filter, an electric transfer pump some fuel hose and 3 feet of copper
tubing. You make a vacuum cleaner gadget with this, remove the inspection
ports and vacuum away.
We also had a 100gpm Racor filter and a 13 gpm fuel transfer pump added to
our fuel system and filter the fuel before it goes into the tank.

I have polished my tanks for the last 10 years myself.

There is also a screen at the bottom of the tank that is accessible only
removing the shut off valve at the bottom of the tank. It is very similar
material as the screens in the shower drains.
This is where you will get a clog and can not be cleaned by polishing the
Of course the tank has to be empty to do this.

Fair Winds,
Amel Super Maramu #376 Kimberlite

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