Fuel Filter Upgrade

philsummers21 · Dec 31, 2012

EDIT 1/3/13... SAFETY NOTE from MH:
The fuel in the CFI-2 system is under pressure. If you are not familiar with fuel injection plumbing systems, the proper hose and clamps to use... do not undertake modifying your fuel system. If a hose leaks or detaches you will have fuel spraying under your hood at pressure creating a potentially explosive situation. Put it simply.. if you do not have the necessary experience with the system... find someone that does or use only factory parts. The system is simple... but there is no room for error with gasoline.

Phil seems to have that necessary experience which shows in his choice of materials.

Heres our solution to the stock filter.
This solves two problems.
1 its cheaper.
2 the stock filter never lasts very long when running race or avgas.

It breaks down the filter inside and plugs up.

So with an order into JEGS for about $60. You get a better filter and bigger fuel lines. I replaced all my fuel lines with 3/8 instead of 5/16.

Also we moved the filter up on the frame more so its easily accessible for future service. This particular filter has a replaceable or washable screen instead of buying a whole filter.

Heres the Parts list and pictures:
JEGS Fuel Filter designed for Racefuel/avgas with Stainless Steel Screen filter
3/8 Hi Pressure Fuel Injection Line
3/8 Fuel Injection line Hose Clamps.
Enjoy

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rotax · Dec 31, 2012

So the stock fittings fit into the 3/8" line with out issue?
Is the larger line going to change pressure? I know, it can't be worse than the current PLUGGED stock filter.
Do you think both lines need to be done in 3/8", or can just the filter side be done?

I need to change my filter asap, just been trying to verify all the parts I need to do it....for less than 100$.

philsummers21 · Dec 31, 2012

Main reason i did the non filter line in 3/8 is because thats what i had and the stock line where i had to T into it for my Boondocker injectors started to leak. Other then that just been doing the filter side. Also reason for 3/8 over 5/16 is that you can't find a good quality filter with 5/16 ends. But yes the stock fittings fit perfect into 3/8 hose. Just be carefull when you cut the metal crimps off the stock fittings.

rotax · Dec 31, 2012

Good deal, thanks!
Whats the trick for cutting those stock clamps off?

BTW, what micron fuel filter should I look for?

Will a rotozip type tool w/ a cutting wheel, and some patience work?

EDIT:
Is this the parts list I need?
Fuel Filter (40 micron, replaceable screen) $29
Clamps (10 count) $7
Fuel Line (5 feet) $31
$67 sub total + $10 s/h = $77 shipped to door

philsummers21 · Dec 31, 2012

Yep. There really simple. I just used a cut off wheel on my die grinder. takes about 30 seconds per fitting.

philsummers21 · Dec 31, 2012

Here is Part #s from JEGS
Fuel Filter 15040 (Black) $29
16047 Clamps 10 pack $7
159230 5' Fuel injection line $31

This is exactly enough to change out both fuel lines and the fuel line to extra injectors on Boondocker kit.

hiwayman · Dec 31, 2012

You need to send this list to hpindy. His gas filter has to be plugged because all his gas is coming out of his mouth!

Norway · Jan 1, 2013

Sounds like a good replacement solution. How many miles have you run this setup?

Thanks for the writeup!

philsummers21 · Jan 1, 2013

Multiple sleds. First one went on last year. Buddy started this and has done it to at least 10 sleds. Id say over 5000 miles total. Every pro gets this

blackie205 · Jan 1, 2013

sweet no more 200 dollar filters

mountainhorse · Jan 1, 2013

Phil,

This is a great write up.

Some concerns and in no way a knock on your fine work here.

I've looked at the Jegs (and others) with the SS filter elements... They only go down to 40 micron with the cleanable elements. The CFI system would need a finer filter protect the injectors properly. 10micron, like the stock Polaris filter, would be more appropriate IMO.

Your setup is great....What are your thoughts on this?

.

philsummers21 · Jan 1, 2013

Sorry for the bad rep to start. Fat fingers on the phone. Anyway, jegs sells 10 micron filters as well but they are not stainless. SO running into the same problem as the stock filter. 40 micron was the finest we could find in stainless. If not running Av or race then a 10 micron standard filter would be fine. How much of a difference is there in 10 - 40 micron i guess. As earlier we havent ran into a problem with running the 40 micron filter... theres 6 of us with turbo Pros running this setup. Plus others that were built and sold with this setup.

mountainhorse · Jan 1, 2013

Your hose setup with the Holley 162-550 filter (1.5" x 3.5") is what I was leaning towards or the larger (more filter media) 162-552 (2.0" x 5.0") ... both 10Micron filters with inexpensive replacement elements ($12).

You would need to add some hose barbs to the filter.

.

philsummers21 · Jan 1, 2013

Those filters look nice. May work with race fuel as well. The problem is not the element but the glue inside on the stock filter. Even if you had to replace a $13 element twice a year would be better then the stock alternative.

mountainhorse · Jan 2, 2013

What is your concern with race gas?

.

Bigrock33 · Jan 2, 2013

mountainhorse said:
Your hose setup with the Holley 162-550 filter (1.5" x 3.5") is what I was leaning towards or the larger (more filter media) 162-552 (2.0" x 5.0") ... both 10Micron filters with inexpensive replacement elements ($12).

You would need to add some hose barbs to the filter.

MH - if I am looking at this setup correctly, just buy the Holley filter, the two hose barbs and should be a simple, direct replacement for the Polaris filter - both using 3/8" fuel line - correct?
Thanks

mountainhorse · Jan 2, 2013

You will need to have a good hose assembly like Phil shows above. The larger filters need to be located differently... hence the long hose.

Also, make sure that you blow/rinse out the hose and filter housing before install to prevent any debris from assembly/mfg from getting to the injectors.

.

.

rotax · Jan 2, 2013

So, now for the silly question.
To replace the fuel filter/line, are you siphoning all the fuel from the tank?
Then elevate the front of the sled?
Whats the trick here?

I liked the Holley filters too...just spendy.
I'm not sure what a non-replacable element filter may cost in 10 micron, but I'm looking for a cheaper all-in-one filter option first.

Thanks for the details on the micron rating, I was wondering about that.

philsummers21 · Jan 2, 2013

There is no need to drain the tank. All the fittings are on top so you will only lose whats in the line.
As far as racegas the racegas is eating the glue inside of a stock filter and plugging it very quickly. Took the guy i know a little bit to figure this out till he cut a stock filter open. Thats the reason we went to the stainless steel screen. Maybe the higher quality filters such as holley wont do this but cant tell for sure.

mountainhorse · Jan 2, 2013

I've run Sunoco 110 and VP 110 through the PRO filters both in straight and diluted mixes.... the only ones that I've seen "eat" the glue are race-gas additives or home brew Toluene mixes.

What gas are you using.

maybe I'll have to let one soak in race gas for a while and cut it open.

.

Fuel Filter Upgrade

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