REFLECTOR: Fw: Fuel Filters

[Scott Derrick]

My setup has unfiltered straight runs from wing tanks into the sump and
used to have a clear glass cleanable filter right after the sump outlet.

I never liked the cheapo glass housed filter.  It was not very large and
I was always worried I would buy a tank of gas with junk in it and it
would clog cause it had so little surface area. It never did, and never
leaked.

I did accumulate some  crud in the sump, mostly fiberglass fibers, and
once about a pint of water.  The fibers would plug up the sump drain. 
It was actually easy to clean, just pull the sump drain and all the crud
would flush out immediately.  I had to do this 3 times, then it stopped
accumulating.

I increased the size of my fuel lines to the fire wall because of my
increased fuel flow demand and changed to an automotive filter.

http://www.amazon.com/FRAM-HPG1-High-Performance-Filter/dp/B000CBSFSQ

Its rated at 90 GPH which I'll never get close too, and has an integral
bypass valve if the filter becomes blocked.  It is heavy which is a
drawback, the steel filter housing is rated to 200 psi so you can mount
it after the injector fuel pump.  I replaced the heavy steel mounting
bracket with a much lighter home rolled fiberglass bracket.

Scott



nmflyer1 at aol.com wrote:
> Tom,
>
> I think you are referring to my post. Sounds like my setup is much
> like yours. The only reason I plan on removing the glass filters to
> the sump is that I am not comfortable with their design for the inside
> of my Velocity. It is possible for them to loosen a bit and leak fuel
> (although that has not happened yet), something I do not want.
>
> I have a 10 Micron filter after the sump. Before first flight, I plan
> on removing the glass filters and replacing with  fresh hose. That
> will eliminate 4 extra connections in the system, as well as making me
> "feel better".
>
> I would be interested on hearing if anyone has cleanable filters
> before the sump and how much "gunk" they get out of them once there
> has been several hours of run time.
>
> Kurt
>
>
> -----Original Message-----
> From: Tom <tomcat05 at comcast.net>
> To: reflector at tvbf.org
> Sent: Wed, 8 Apr 2009 8:08 am
> Subject: Re: REFLECTOR: Fw: Fuel Filters
>
> Another fuel filter question. 
> There are 3 filters on my plane, one out of each wing tank (clear-see
> through type) and one metal filter between the header tank and elec
> fuel pump. I just changed them all on last annual. I notice one person
> posted that is was OK to remove the wing tank filters after several
> tanks of gas had gone through and the potential for internal tank crud
> diminished. Is this an acceptable practice?..thx Tom 
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