ordered 2micron filter ???

[CarlsonR]

The OEM filter is a Cummins-Fleetguard-Stratopore 10 or 7 micron filter. The GDP filter is a Cummins-Fleetguard-2 micron filter that is two to three times the surface area, depending on which filter you use the 5320 or 5319, of the OEM filter. regardless of the engr specs for how flow vs pressure vs filter capacity common sense says the two micron is going to catch more dirt of a smaller size then the factory filter is, so it has to be an improvment over the stock set-up. Whether its fleetguard, catapillar, amsoil,wix there is really no other alternitive out there. They are all high quality name brand products using the newest technology and simular methods for filtration measurment. Also the larger catapiller and fleetguards are used on 14 & 15 liter engines, I would doubt they are being over stressed on our little 5. 9's

 

[TMoe]

2 Micron filter

OK, so with a stock flow of around 1 gpm all of these 2 micron filters should work. Most people are seeing around 1/2 psi "differential" pressure drop max. That is with the smaller FG 5320. The part number for the FG filter head is 3930618S, 1/2 NPT, or 142784S, 7/8 ORB in/out. I had to post that as I bought the wrong one from a previous post. I bought 1 Donaldson P551311 and 1 Fleetguard 5319 2 micron filters for comparison. The longer the filter the less restriction, more parallel paths. The Cat filter looks even bigger and someone mentioned it also helps with water. Someday someone will figure out which filter is best but hopefully all will prevent pre-mature injector failure. These fuel issues are nuts or maybe I'm just another paranoid member of the TDR. Love the truck, maybe I should have bought a hemi? :-laf NOT!



Brods, I agree and hope that is correct. I don't know how the velocity of the fuel entering and exiting the filter affects ratings. May stir things up. A smaller tube would require higher velocity vs large tube for same flow. Of course the pressure drop is greater for smaller line, etc. At 1 gpm I wouldn't think changing fuel line from 5/16 to 3/8 would help much to increase flow, lower DP drop, from pump to CP would it? I may have to do some calculations. I have seen the statement high pressure kills filter ratings and never understood it. I still don't since high pressure across filter = flow. Maybe it is related to velocity of fuel?

 

[brods]

CarlsonR, I agree with you. That is why Twest’s comments are confusing. He does have some good points about the filter rating inconsistencies. It is also good idea, as he recommends in another thread, to make sure the filter head or filter itself does not have internal bypass arrangements. I’m guessing most of his comments apply to filters not specifically designed as fuel filters. His statements of high supply pressures being a problem are confusing the issue. The supply pressure does not matter with a properly sized and maintained filter. It is the differential pressure (pressure drop) across the filter element that is important. When the differential pressure starts to go up, the filter is getting dirty so change out the filter!!



TMoe, yes the fear mongers have made it seem like your truck will self destruct if you don’t get a 2 mic filter on it immediately. To my knowledge they have yet to produce a document from Dodge, Cummins or Bosch requiring 2 micron or even 5 micron absolute filtration. Not that it is a bad idea to have extra filtration, its just that the risk may not be as dire as some portray it to be. I probably won’t have much time for the next few days since we’re trying to get a few jobs out before ’07, so here are a few old filtration links that are in my browser’s favorites section that you may find interesting.



Parker has a lot of good info: http://www.parker.com/ead/cm2.asp?cmid=1009

Better info (2. 5meg) http://www.parker.com/hydraulicfilter/cat/english/HTM-4.pdf

Air filter stuff, but a lot of the principals apply: http://www.tinworks.com/tw/airfil2.htm

 

[TCDiesel]

I have conduct My own testing, I used Racor's,Fleetguard,Baldwin,Cat,Mopar,Del-co and many others, all of these Did not drop the Pressure more than 1 to 2 PSI,(all New and only used for the test)the pump was 16 GPM with 5 to 7 PSI all of these filters again were in the 12 to 13 GPM, Only Zinga and one other Commercial manufacture Drop both Pressure and GMP, in fact the Zinga Filter cut the Pressure down to 2psi and the GPM drop down to 5 to 6 GPM. Zinga filters are not certified for internal combustion engine, so my recommendation is to attack the filtration prior to the vehicles tank. Their are systems available that do work well on the vehicle but they also do introduce other issues that the stock system does not,and when it comes to filtration KISS work's well in the long run. and you are not married to a aftermarket supplier when it fails.



I will make this as simple as I can, ASK QUESTIONS and never assume that because it says 2mic on the side it is doing it,It may do 2mic@ 2% BUT what what about the other 98% on the first pass. again bypass systems mounted on the vehicle will produce generally better results.



These are just my findings and should be taken as salt.

 

[TMoe]

Injector tube filter?

I've read the injector tube "edge" filter reduces particles down to 2 microns before entering injectors. Doesn't that meet the 5 micron absolute rating required by Bosch? How can contamination, besides water, get past that and harm injectors? Seems like nothing else but a good factory filter is required unless there is some clogging going on. I am still adding 2 micron pre-CP as I have one in hand and there is very little restriction and as TWest mentioned 1 to 2 psi at 10+ gpm translates to very small drop at 1 gpm. Still need to know what is causing injector failures to be able to "possibly" prevent it. I will be addding PS white bottle and MM oil as recommended by numerous others here to lube CP. May look into anti-fungus additive also as post from Alaska on ULSD failing fuel systems is scary. I did nothing, but change filter and lift pumps, on 2001. I am not asking too much simply would like 100,000 miles of trouble free fuel system.



Someone mentioned Minnesota requires biodiesel added to all diesel. Does that mean ULSD also and if so does that provide excellent lubrication to CP?

 

[brods]

Tmoe, I’ve wondered what exactly that “edge” filter is too. See this post for comments about the Dmax injector failures and added filtration: https://www.turbodieselregister.com/forums/showpost.php?p=1650780&postcount=41 "But the added filtration has not seemed to help the injector failure rate. " If you do a search on “diesel fuel injector cavitation” you will get several hits for papers and studies. It would seem there are issues besides dirt that may be contributing to the injector failures. We also know that steel shot is no good for injectors either, lol. So make sure to fill up with the ULSSD (ultra low steel shot diesel)

 

[brods]

I have conduct My own testing, I used Racor's,Fleetguard,Baldwin,Cat,Mopar,Del-co and many others, all of these Did not drop the Pressure more than 1 to 2 PSI,(all New and only used for the test)the pump was 16 GPM with 5 to 7 PSI all of these filters again were in the 12 to 13 GPM, Only Zinga and one other Commercial manufacture Drop both Pressure and GMP, in fact the Zinga Filter cut the Pressure down to 2psi and the GPM drop down to 5 to 6 GPM. Zinga filters are not certified for internal combustion engine, so my recommendation is to attack the filtration prior to the vehicles tank.

I’m not sure what the objectives of your tests were, or the specifics of the test setup you used, but, especially for the Zinga filter, it is a safe bet that you reached the limitations of the pump that you were using. More than likely your pump has an internal pressure relief bypass arrangement and that is what reduced the flow rate. That tells you is the Zinga filter required more pressure to force 16 gpm through it than your pump could provide. I'm not sure how you would apply this information to our trucks.



Did you measure the different filters’ abilities to trap dirt particles as part of your tests? You have recommended the Zinga filter in other threads and it sounds like you use it too. From the looks of Zinga’s website it appears their primary market is hydraulic filters and accessories. Do you feel a Zinga hydraulic filter gives superior filtration on diesel fuel compared to a filter specifically designed for diesel? If so would you be willing to share what information you used to come to that conclusion?

Their are systems available that do work well on the vehicle but they also do introduce other issues that the stock system does not,and when it comes to filtration KISS work's well in the long run. and you are not married to a aftermarket supplier when it fails.



I will make this as simple as I can, ASK QUESTIONS and never assume that because it says 2mic on the side it is doing it,It may do 2mic@ 2% BUT what what about the other 98% on the first pass.

Well said!