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0. 12:19 AM - List Fund Raiser (Matt Dralle)
1. 05:48 AM - Re: Fuel Filter (Lynn Matteson)
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| Subject: | List Fund Raiser |
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Rick-
I've got the "real" Purolator filters, but they *do* have the cast
center section as you say. But mine are leak-free and have been right
along. I know what you mean about the center section being kind of
crappy, machining-wise, and the old round one was a better design,
but like everything else, the "design be damned, we're gonna build it
cheap" school of thought has taken over.
I just removed the electric fuel pump from my fuel system, and in so
doing, I had to find another way to go from 5/16" fuel line down to
1/4" fuel line, so I just changed one end on my Purolator filter and
that was that....5/16" cap with the built-in barb on one end, and
1/4" cap with built-in barb on the other end. And these caps have the
nice smooth barb which is a joy to install and remove the fuel line
from. I've seen the multi-size end caps on the "non-Purolator"
filters, and they are crap...the "one size fits all" mentality at
work again.
Just for the record, before I removed the fuel pump and fuel pressure
gauge sending unit from my system, I measured the fuel flow right at
the carb, and it was 11.25 gallons per hour. With the fuel pump and
fuel pressure gauge sending unit removed, and 1/4" fuel line in it's
place, the flow was 13.6 gallons per hour. This was measured (with
about 5 gallons in each of the two wing tanks) by taking the float
bowl off and timing the flow of fuel through the carb (with the new
3.7mm float needle seat) for one minute, multiplied by 60. I can now
climb as steeply as desired, and the engine doesn't go lean or
stumble from lack of fuel.
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200, 587hrs
Sensenich 62x46
flying again after rebuild, and new Electroair direct-fire ignition
system
On Nov 4, 2008, at 7:43 AM, Richard Girard wrote:
> Lynn, et al, Be very cautious when buying the latest version of the
> "Clearview" type of fuel filter. They are now marketed by several
> companies, among them "Mr. Gasket". The design has been re-
> engineered to make them easier to manufacture and the result is no
> longer suitable for any vehicle application and certainly not
> aircraft IMHO.
> The original Purolator filter (mine is circa 1994) had one end and
> the center section machined as one piece and the center section was
> round which yielded threads that gave a circular contact on the end
> that screwed on. Now the center section is a flat cast piece. The
> parting line runs through the center of the part and the two sides
> are MISALIGNED (!) so that the ends will not stay square to it when
> the filter is assembled. The result is that the o-rings get damaged
> and leak. In addition this new center section is only about
> 1/8" (3.2mm) thick so the area of thread engagement to the threads
> in the end pieces is very small.
> In the original the barbed fittings were part of ends making for a
> bit of a PITA since you had to buy a specific size to match the
> fuel line used in the application. The new version has threaded
> ends and comes with a set of plastic barbed fittings so one size
> fits all, however, the ends are chromed and the "overspray" (for
> lack of a better term) into the first two threads makes it
> necessary to chase the threads if you wish to use metal fittings.
> If you wish to investigate for yourself, I recommend you remove the
> filter from its packaging and inspect it right there on the store
> counter. If they make you buy it first at least you won't have to
> make a return trip to take it back.
>
> Rick
>
> On Tue, Nov 4, 2008 at 12:05 AM, Lynn Matteson <lynnmatt@jps.net>
> wrote:
> <lynnmatt@jps.net>
>
> I use Purolator in-line fuel filters in each of the down-lines from
> my two fuel tanks, and another just after the main shut-off valve.
> These have a glass see-through housing, and replaceable filters.
> Total of 3 filters. Aircraft Spruce has them, as well as some auto
> parts outlets. They might not be available as Purolators any more,
> but NAPA carries them in their own brand, and it is the same thing.
>
> Lynn Matteson
> Kitfox IV Speedster
> Jabiru 2200, 587hrs
> Sensenich 62x46
> flying again after rebuild, and new Electroair direct-fire ignition
> system
>
>
> On Nov 3, 2008, at 9:21 PM, pequeajim wrote:
>
> <pequeajim@gmail.com>
>
> What are you all using for a fuel filter with your Jabiru engines?
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=212186#212186
> ===========================================================
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