I'm almost finished installing my walbro system, but I have a question. Glacier Diesel sells a fleetguard FF5079 strainer that they claim is 24 micron. All the cross references I can find are 140 micron, yet they are the same wire screen filter media. I've also seen others refer to the fleetguard as a 140 micron filter. Can anyone explain this discrepency?

Anyway, I bought a Napa 3270 140 micron (wire screen) strainer and I also bought a Baldwin BF836, which is a paper media filter with a 20 micron rating. Is it a no-no to use a paper media in-line filter in this application? Can it rip apart and toast the pump? Obviously, the 20 micron would provide better protection for the walbro with all things being equal.

Thanks for the help,
Brad

 

Remember that the walbro has to suck fuel through whatever pre-filter you're using. Most automotive applications only use a small screen filter for big rust particles and whatnot before such a pump. If you impede flow too much the pump will constantly cavitate (bad). I used a small cheap napa filter that I replace every other time I change the fuel filter.

 

The Walbro is sucking fuel through each filter with no noticeable change in fuel pressure. I'm mainly just curious if the paper filter is a bad idea.

Brad

 

do you really need to run a filter in front of the walbro??????

I just put mine in and i am not

 

You need a screen strainer at a minimum.

 

so just a cheap screen strainer? will i fry the walbro??????

When i first put it in i was getting 26 psi now it wont go above 25, am i plugging it up already?

 

The Walbro does NOT do well with any kind of abrasive contamination. I wouldn't use it without some type of filter or screen.

 

I installed a NAPA 3003 inline filter with clear body. It is already dirty. I will be changing it every time I change oil, I think. Cheap, $3 or so.
-P

 

The baldwin I have is basically the metal version of this filter (napa 3033 is as well). I guess I'll go with it since it filters much smaller particles.

I bought my regulator from Eric at Vulcan and he told me that he's had more than one Walbro die because of contamination. The Walbro will suck sediment from the tank that the weaker pumps never disturbed.

These filters are cheap and very easy to install. I would think anyone running a Walbro should consider intalling one.

Brad

 

sweet dudes, i threw in a filter, one of those gold looking ones, should be good, thanks boys

 

Every time I pick up some 2-cycle oil from Walmart, I wonder if I should buy one of those fuel filters for cars that they have there hanging on the wall. They are like $4 and are much larger than the little Napa unit I have, so got to have more surface area and filtering capacity. I only wonder if the filter media is compatible with diesel. Gasoline is generally a much more aggressive solvent, so I think it should be Ok. I may try it some day.
-P

 

I'm getting all the stuff together to do this and was thinking about a big truck canister filter in front of the pump. You can mount one on the outside of the frame and it ought to flow plenty for the pump. I figured just the one filter like my m-11 uses and no filter after. The replacements are alot cheaper than the dodge filters. Would this work?

 

""""bought my regulator from Eric at Vulcan and he told me that he's had more than one Walbro die because of contamination. The Walbro will suck sediment from the tank that the weaker pumps never disturbed."""""

WOW, Another nugget found,,, Something I have never thought of..
Thanks..

 

I am sure it would. But I personally don't like hanging things around under the frame, especially things that a rock on a jeep trail can puncture when thrown by the tire, and make fuel leak all over the place. It seems that is how FASS is set up and people don't have problems but to me it feels like going to a karate sparring session without a groin protector, exposing the vitals to a painful blow
-P

 

I used a cheap Fram gas filter as my pre-filter for my custom Walbro system. It's been in service for almost 2 years and 20k miles with no problems. I've got a spare under the back seat in case it would plug up.