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Hi Charlie,
Dug back in the files and found this on the GM High
Pressure fuel filter and saginaw fittings. Not certain how current any of
this is, but should get you started.
Ed
Fuel Filters: OEM Auto Fuel Injector
Fuel Filters (Two in Parallel)
Type: AC GF - 481 Pkg:
25056052 OEM:25055129 (or equivalent)
Replace
by
GF652 or NAPA FIL 3481
Fittings: 3/8 Saginaw to
AN6 Adapter, O ring required
Earls Saginaw fitting : P/N 991955ERL 16mmx1.50" - AN-6 Power
Steering/Fuel Injection -"0" ring seal
Accel Saginaw Parts
Fuel Filter Fitting Kit: 3/8 Saginaw to 6AN (2 ea):74721
TPI Fuel Rail Fitting Kit: 3/8 Saginaw to 6AN (1 ea), 5/16
Saginaw
to AN6 (1
ea): 74730
The 3/8" Saginaw fitting uses a M16x1.5 thread.
Sent: Sunday, August 05, 2012 10:49 PM
Subject: [FlyRotary] Re: PP engine advice?
Mark. S. (and anyone else with PP engine experience)
How did you end up getting a usable MP signal for the EC2/3? I
have another couple of builders who took Paul L's advice and used PP engines
with slide throttle mounted right to the ports. They are not having any
luck getting a stable MP using the oil injection ports on the rotor housing.
Did you ever come up with a good solution?
Thanks,
Tracy Crook
Sent from my iPad
Charlie,
My system uses those EFI filters also. They are Fram p/n G3727.
They take a Saginaw fitting on the filter side (see pic). I don't
recall where I purchased my AN-Saginaw fittings.
Mark S.
On Sun, Aug 5, 2012 at 7:16 PM, Charlie England <ceengland@bellsouth.net> wrote:
I'm not flying yet, but I more or less
copied Ed Anderson's filter configuration: each high pressure pump feeds a
separate GM inline filter, with the outputs from the filters T'd back
together to feed the regulator. There are AN adapters that screw into the
filter. Attached is the only pic I could find. The pumps are off the bottom
of the pic. Ed, do you have the NAPA #
handy? Charlie On 08/05/2012 03:35 PM, David Leonard
wrote:
So my next question is how small of filtration do
we need? ie, what is the size of a particle that will fit through
the injector nozzle easily?
I was using the Earls sintered bronze
element at 35microns, but I also could use the SS screen version at 85
mic. The Peterson in line 600 series is MUCH more expensive and
comes in 45, 60, and 100 micron SS screens.
http://www.jegs.com/p/Peterson-Fluid-Systems/Peterson-600-Series-Fuel-Filters/1528539/10002/-1
Those do have more surface area but will be a hassle for me to retrofit,
and not sure they are worth 4x the price of the earls. Lots of other
brands I have not explored yet.
I like the sintered bronze
for strength and durability. Other opinions?
Dave
Leonard
On Sun, Aug 5, 2012 at 12:42 PM, David Leonard
<wdleonard@gmail.com> wrote:
Yea, mine is an Earls cleanable high pressure with maybe 10 sq cm
worth of area. Will look into the Peterson. Thanks
Tracy. Dave Leonard
On Sun, Aug 5, 2012 at 10:48 AM, Tracy <rwstracy@gmail.com> wrote:
Al probably means the filter that's on factory in-tank pumps.
OK, but very hard to implement on RV wet-wing tanks. I
used a gascolator for low side filter on my -4. Worked OK and
when it clogged, switching on the backup pump with main pump
caused the screen disk to collapse and let fuel bypass it.
which is better than no fuel at all but not an ideal solution.
On the -8 i used a cleanable Peterson filter with TONS of
filter area, works great. That was a replacement for the Summit
Racing fuel filter with a filter element disk the size of a nickel.
It clogged up in about about 5 hours of flight.
Yes, it was the high side filter. I don't have any low
side filters. Would be interested in a source for the
self-cleaning fool-proof low side filters that Al
mentions. -- David Leonard Turbo Rotary RV-6
N4VY http://N4VY.RotaryRoster.nethttp://RotaryRoster.net
On Sun, Aug 5, 2012 at 6:34 AM, Tracy <rwstracy@gmail.com> wrote:
I assume Al is referring to the pump intake side
filter. So for the record, was it the inlet
side or the high pressure side filter that clogged? ( Both
are needed ) From the symptoms I'm guessing high side but not
sure.
BTW, nice job!
Tracy
Sent from my iPad
As long as your are rebuilding, tremendous safety
improvement by using same fuel filter method that all cars use.
No matter how much foreign material you throw at it, it
can't clog. It minimizes pressure drop, so lower risk of
vapor lock. Self cleaning filter. Self priming pumps.
-Al Wick Cozy IV powered by RDM Subaru 3.0R. Expert
at failure prevention methods, N9032U 240+ hours from Portland,
Oregon Glass panel design, Subaru install, Prop construct,
Risk assessment info: http://www.ez.org/pages/alwick/index.htm
----- Original Message -----
Sent: Saturday, August
04, 2012 1:38 PM
Subject: [FlyRotary] Re:
Rotary Forced Landing
Dave, having gone through recently what you just
experienced I would like to say GOOD JOB on getting down
safely and with such little damage. Anyway at 1500 AGL
there isn't a lot of time ... obviously you made the right
choices.
Jeff
(Rebuilding my Ride)
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Sigh..
Yup, that was me. I have been meaning
to fess up. We were at about 1500 agl when the fuses
blew on my fuel pumps. I was in a close formation of 40
aircraft at the time too. I think I got some bad MOGAS
somewhere in Iowa as I did notice my fuel return flow
creep downward but didn't think it was a big problem.
On the incident flight, a one hour formation
flight from SQI for a mass arrival at OSH, the return
fuel flow drifted down to zero. I actually though it was
a sensor problem. I didn't have the ability to give it a
lot of attention because we were in a loose formation.
Soon after we pulled it together for a tight formation
power switched off. I tried to find a road, but quickly
ran out of options and put it down in a bean field. With
the beans hitting the flaps it brought me to a stop in
about 200ft, just before I would have gone into the full
grown corn. As mentioned, wheel pants broke in half but
no other damage besides pulling bean leaves out of every
nook and cranny. The farmers were very nice, and the
stories are true... they have attractive daughters. They
were out there barefoot in their Sunday best enjoying
the excitement. Helped me clean the fuel filter and
replace the fuses. Within a couple of hours I was able
to take off from one of their driveways as they all
waived good bye (but strangely, no one took me up on my
offer for a ride).
Landed at OSH just before dark
to a reserved parking space and a very warm reception
from the formation group and friends. Great support from
everyone all around, though I am trying to avoid the
obvious new call signs they are trying to give
me.
--
David
Leonard
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David
Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
--
David
Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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<Saginaw_2_AN.jpg>
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