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The micron rating of the last chance filter would be the same as in the car
the injector came from or was used in. Find a filter with that micron rating
(the one from the car) and cut it open. Lay out the paper or wire media and
measure the square inches. Double that number and buy a filter(s) that have that
numberof square inches of media and AN fitting capability.
There is no application for hose barb fittings on an airplane or a
race car. Change the filters at annual.
Sintered bronze elements can be plugged solid by a dose of water. I would
not use them. This is race car stuff. My BD-4 hangs from the ceiling
unfinished.
Lynn E. Hanover
In a message dated 6/16/2017 8:55:46 A.M. Eastern Daylight Time,
flyrotary@lancaironline.net writes:
Hi
Finn,
Since you appear to be uncomfortable with barb fittings, here are
the ones I
used for over 10 years that have a screwed on fitting, never
had any
problems. Replaced them ever 2 years, cut them open and
could never detect
any trash in fuel system. I started with an AC
GF-481 which became hard to
find and then switched to a more readily
accessible NAPA filter the GF652
NAPA FIL-3481. They do require the
Saginaw fitting and an "O" ring.
Fuel Filters:
OEM Auto Fuel Injector Fuel Filters (Two in
Parallel)
Type: AC GF - 481
Pkg: 25056052 OEM:25055129 (or equivalent)
Replaced by GF652, NAPA FIL
-3481
Fittings: 3/8 Saginaw to AN6
Adapter, “O” ring required
Best
Regards
Ed
-----Original Message-----
From: Charlie
England
Sent: Thursday, June 15, 2017 11:29 PM
To: Rotary motors in
aircraft
Subject: [FlyRotary] Re: Fuel filter
On 6/15/2017 7:45 PM,
Finn Lassen wrote:
> Still haven't found a EFI filter with hose barbs
I'm comfortable with.
>
> Some specs says paper filter, some puts
the limit at 45 psi.
>
> Can anybody recommend a filter to insert
between output of HFI pumps and
> fuel rails?
>
>
Finn
>
>
>
> --
> Homepage:
http://www.flyrotary.com/
> Archive and UnSub:
>
http://mail.lancaironline.net:81/lists/flyrotary/List.html
Have you
searched for an inline fuel injection filter with NPT threads?
You can use
NPT to hose barb adapters. Summit has one that looks like
the NAPA all
metal filter several builders have used. It doesn't list
filter media or
max psi on the site, but it might be worth a
look.
Charlie
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