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Fuel Filter

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pequeajim

Joined: 03 Sep 2006
Posts: 708
Location: New Holland, PA

Posted: Mon Nov 03, 2008 6:21 pm Post subject: Fuel Filter

What are you all using for a fuel filter with your Jabiru engines?

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Mon Nov 03, 2008 10:06 pm Post subject: Fuel Filter

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:



 	  Quote: 	
		   

 <pequeajim(at)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 12186#212186

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

aslsa.rng(at)gmail.com
Guest

Posted: Tue Nov 04, 2008 4:43 am Post subject: Fuel Filter

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(at)jps.net (lynnmatt(at)jps.net)> wrote:

 [quote]--> JabiruEngine-List message posted by: Lynn Matteson <lynnmatt(at)jps.net (lynnmatt(at)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:



 [quote]--> JabiruEngine-List message posted by: "pequeajim" <pequeajim(at)gmail.com (pequeajim(at)gmail.com)>

 

What are you all using for a fuel filter with your Jabiru engines?





Read this topic online here:



[url=http://forums.matronics.com/viewtopic.php?p 12186#212186]http://forums.matronics.com/viewtopic.php?p 12186#212186[/url]

  [quote][b]

jcrowder(at)lpbroadband.n
Guest

Posted: Tue Nov 04, 2008 6:11 am Post subject: Fuel Filter

Rick,

 What  filters are you now using?  I'm about to replace mine.

 Jim  Crowder

 [quote]   --

aslsa.rng(at)gmail.com
Guest

Posted: Tue Nov 04, 2008 5:34 pm Post subject: Fuel Filter

I have a Clearview that was sitting in my Harley parts bin when I bought the Mr. Gasket POS, so the Mr.Gasket unit went back to the auto parts store and the Vibraglide filter went airborne.One more thing about fuel filters. If you live in a country subject to the Ethanol swindle as we are in the USA be careful NOT to use any kind of fuel filter with a paper element. If water should drop out of suspension it will coat the paper and, well, you might as well try to fly with the fuel valve closed. This isn't just my opinion, Rotax mentions this specifically in their manuals.

 



Rick



On Tue, Nov 4, 2008 at 8:11 AM, Jim Crowder <jcrowder(at)lpbroadband.net (jcrowder(at)lpbroadband.net)> wrote:

[quote]      Rick,

 What  filters are you now using?  I'm about to replace mine.

 Jim  Crowder

 [quote]   --

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Wed Nov 05, 2008 5:48 am Post subject: Fuel Filter

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:



 	  Quote: 	
		   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(at)jps.net>  

 wrote:

 

 <lynnmatt(at)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(at)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 12186#212186

 ============================================================

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Tue Dec 02, 2008 3:21 pm Post subject: Re: Fuel Filter

I've never seen a fuel filter on any of the production aircraft I've owned or flown, just a gascolator  backed up by drain points in the tanks.  I haven't decided whether to install a filter or not.  I wonder if it isn't just one more point of potential failure.



Flame away!



Tim

_________________
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

craig(at)craigandjean.com
Guest

Posted: Tue Dec 02, 2008 3:34 pm Post subject: Fuel Filter

Well the Jabiru 3300 (hydraulic lifter) installation manual specifically

calls for one:



"11.2 Fuel Filtration

A Fuel filter capable of preventing the passage of particles larger than

0.1mm (100um) must

be installed between the fuel tank outlet and the fuel pump.

The filter must be present in the system for the fuel flow test. The size of

the filter should

give consideration to allow adequate flow with a used filter.

A Ryco Z15 or similar filter has been used successfully."



Rev 1, March 27, 2006, page 21 of 49.



I suppose if the mesh in the gascolator met those numbers they would be

happy.



-- Craig



--

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Tue Dec 02, 2008 4:37 pm Post subject: Fuel Filter

No flames, but no failures either, in any of my three Purolator in- 

line glass fuel filters in nearly 600 hours of operation....and no  

gascolator, either. Just a header tank with the wing tanks feeding  

it, and a sumping point at the bottom. This serves the same purpose  

as a gascolator. It allows any crap that reaches the header tank to  

settle to the bottom, where it is "sumped" away the next time fuel is  

drained...the next day, hopefully. And unlike a gascolator, the  

capacity of this tank below the fuel outlet port is almost a quart,  

so you could get really lazy/inattentive and still not get any crap  

in the outgoing fuel...unless you shook the airplane really  

violently, then tried to fly it. Then you might get some floating  

crap into the outlet port. Guess what? Downstream from this header  

tank is the last of the three filters.

And just for the record, I've got 19 hose clamps and more than that  

in potential points of leakage, if you count the barbed fittings that  

are screwed into the tanks, valves, filters, firewall pass-through,  

and carb. Oh, and by the way, this is a high-wing, gravity-flow system.



I just found the figures for fuel flow that I posted back on Nov 5,  

and which I'll paste here:

*****

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, taildragger

Jabiru 2200, 593hrs

Sensenich 62x46

flying again after rebuild, and new Electroair direct-fire ignition  

system;

also building a new pair of snow skis





On Dec 2, 2008, at 6:21 PM, Tim Juhl wrote:



 	  Quote: 	
		   



 I've never seen a fuel filter on any of the production aircraft  

 I've owned or flown, just a gascolator  backed up by drain points  

 in the tanks.  I haven't decided whether to install a filter or  

 not.  I wonder if it isn't just one more point of potential failure.



 Flame away!



 Tim



 --------

 ______________

 CFII

 Champ L16A flying

 Zodiac XL - Jabiru 3300A

 Working on fuselage





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 17404#217404

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Wed Dec 03, 2008 7:55 am Post subject: Re: Fuel Filter

The Aircraft Spruce filter P/N 05-01030 seems to be serving me pretty well so far.  I want to add a word of caution about the comment of using a smaller gascolator filter.  I have the Spruce gaslocator that has a single layer mesh screen in it.  I e-mailed Spruce about the mesh size and got a reply that it is 120 microns.  They told me that they have a 74 micron screen available, but that it was not listed in the current catalog.  I went ahead and bought a couple thinking that I would just use the smaller screen and no filter.  



I installed the new screen and performed and engine run.  I could not accelerate past part-power and my fuel pressure at the engine was way low.  I popped the old screen in and re-ran the engine without any problems.  I threw the smaller screens out, added a filter into the system and never looked back. I could have spent some more time troubleshooting around the smaller screen but decided it was not worth the effort.



The stock 120 micron gascolator screen and the 05-01030 filter passes the flow test and has around 50 flight hours with no problems.

_________________
David Gallagher
Cincinnati, OH area

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