Lower Micron Fuel Filter Mod - Page 7 - PeachParts Mercedes-Benz Forum

Diesel911 · #91 03-05-2009, 05:34 PM

Quote:

Originally Posted by argus445

In adding these filters anyone make a good reliable inline vaccum gauge to measure restriction of the filters so you'd know when u need to change it? I already have one for my airfilter but havent found one for fuel system i'm assuming it would have to be tee'd off from the inline black hose going into supply pump or maybe a pressure one after the supply pump?

I think my preferance would be to have a pressure gauge between the Spin-on Filter and the IP.
Either on would tell you if you are having Fuel Supply issues. However, if the Tank Stainer or Tank Vent is plugged it would also cause a higher Vacuum reading. So a gauge may not target the source of the problem exactly.

#92 03-07-2009, 07:21 AM

Quote:

Originally Posted by bgkast

ForcedInduction made a few kits then stopped.

I couldn't find any local sources for long M16 all-thread bolts and online bolt prices were too high.

Quote:

nobody makes one long enough.

I got mine from boltdepot.com but they were very expensive for the low-ish quality.

Quote:

Originally Posted by argus445

In adding these filters anyone make a good reliable inline vaccum gauge to measure restriction of the filters so you'd know when u need to change it?

The filter is on the pressurized side of the pump. You would need two gauges to measure the pressure drop across the filter.

DeliveryValve · #93 03-07-2009, 05:57 PM

Quote:

Originally Posted by ForcedInduction

I couldn't find any local sources for long M16 all-thread bolts and online bolt prices were too high.
......

I believe I can supply the bolts if you want, I have a local place that can get them.

Skid Row Joe · #94 06-17-2009, 01:00 AM

Bookmarking thread.

tbomachines · #95 06-17-2009, 08:12 AM

Quote:

Originally Posted by Skid Row Joe

Bookmarking thread.

Same, after seeing what came out of my tank. I've been trying to find an inline fuel filter that will go down to about 5 microns, to insert between the primary and primer pump daisy-chained. If that comes up fruitless, I will probably go for this. I think this mod is fantastic and great job to those who pioneered it!

Diesel911 · #96 09-15-2009, 03:31 PM

Quote:

Originally Posted by Diesel911

The original bolt/housing is not threaded part of this is because the origional bolt has an O-ring to seal it down in that area so the space around where the bolt sticks out is irrelvant as it is sealed further up by the O-ring.
On our mod in order to use a similar O-ring set up would have required machining a whole new central filter bolt with properly sized grooves in it for the O-rings and the housing. To invent bolt from scratch would have taken way too much time.
Using a regular bolt 16mm simplified things.
We thought threading the housing was the simplest way to go.
I am open to ideas; one of the reasons for this Thread is that we get ideas from other members. Maybe all we needed was a bigger hole with no threads but you will need to find something to seal that area or the fuel will not go into the filter in will bypass and go between the bolt and filter housing.
What we did was DeliveryValves idea as he wanted to use that specific filter with a bottom drain. I chose a different path and had to make a threaded adapter for my choice of filter and a drilled plate to move the filter out further so the longer filter would have room to change.

Due to a fatter filter about 1/6 of metal had to come off the areas shown in the photo

and I also had to lengthen the fuel line that returns from the fuel injection pump due to the banjo fitting having to be rotated in a different direction to clear the filter top.
I used the NAPA version (3528) of a CAT filter. Since then I have recieved a real CAT filter 1R-0750 and the top of this filter has a smaller outside diameter than the NAPA one and I beieve it will require no metal removeal on the filter housing. Another bonus is CAT claims an absolut 2 micron filtration while the NAPA filter is only 2 Nominal Micron filtrations.

Update on the above:
When I did my filter mod I had intended to use a CAT high effficiency 2 absolute Micron Fuel Filter. To get the project going I used a WIX filter bought at the local NAPA.
As it turns out the WIX filter is about 1/8” in diameter fatter than the CAT filter (I bought a CAT Filter later on Ebay) and I hand to grind that amount off of the Stock Filter housing to get it to fit.
For the past 2 months I have had some Fuel seeping over the top of the WIX filter and decided to swap the complete filter housing and install the CAT Filter on a unmodified stock Filter Housing.
Pics:
The CAT Filter has what appears to be a thick powdered metal or cast threaded head with an extremely nice molded rubber seal compared to other companies square O-ring type seal
Next shows the CAT Filter barely clearing part of the stock Filter Housing; but, it cleared it with no dragging at all.
Last Pic shows it mounted.

Diesel911 · #97 09-15-2009, 03:39 PM

When I poured Fuel out of the old filter I found about 1/8-1/4 teaspoon of water.
The white WIX filter holds what must be 1 quart of Fuel so there was never any danger of the water reaching the Fuel Injection Pump.

DeliveryValve · #98 09-15-2009, 09:09 PM

If that CAT filter had a drain, I would be right there with you brother!

But since it doesn't I'll stick with the Baldwin for the Benz. On a side note, I do use the CAT filter for the TDI as a filter mod/upgrade.

Diesel911 · #99 09-15-2009, 11:46 PM

Quote:

Originally Posted by DeliveryValve

If that CAT filter had a drain, I would be right there with you brother!

But since it doesn't I'll stick with the Baldwin for the Benz. On a side note, I do use the CAT filter for the TDI as a filter mod/upgrade.

When I get arround to it I am going to use that Baldwin filter I kept by mistake. The 10 micron one and use it as my primary Filter. It also has a drain.
I have a Filter Base/Head from a VW Rabbit from the J-Yard that will fit it.

I think I will get rid of the plastic primery filter.

lupin..the..3rd · #**100** 09-29-2009, 09:44 PM

That CAT filter is about the best fuel filter money can buy. 2 micron nominal. I have one on my TDI. Change it once a year and you don't need to worry about a drain. I wish there was a way to make it work on the 606.

DeliveryValve · #**101** 09-30-2009, 12:12 AM

Quote:

Originally Posted by lupin..the..3rd

....about the best fuel filter money can buy. 2 micron nominal...

Actually CAT claims the 1R-0750 filter to be 2 micron absolute. With a 98% efficiency at 2 microns.

While according to the Baldwin Rep, the Baldwin BF7591-D has an efficiency of 91.95% for lower than 2 microns.

Another note, CAT did a study and using a 2 micron filter increase life of fuel injection parts by 7 fold compared to using a 10 micron filter (which is stock).

Quote:

Originally Posted by lupin..the..3rd

...
... I wish there was a way to make it work on the 606.

You can always have a remote placement.

.

Diesel911 · #**102** 09-30-2009, 02:52 AM

Quote:

Originally Posted by lupin..the..3rd

That CAT filter is about the best fuel filter money can buy. 2 micron nominal. I have one on my TDI. Change it once a year and you don't need to worry about a drain. I wish there was a way to make it work on the 606.

Some one in the past ask me an easy way to setup to ad on a remote filter.
The below pics are what I suggested. However, it is just a Mock-up. I did not actually tap an thread the parts in the pic.

However, you drill and tap one end of the Rod Coupoing nut for the size of the Filter bolt and tap the other side for Pipe Threads.
When you install it you use a Copper Crush Washer between the Filter Housing and the Rod Coupling Nut.

You do not have to use a Rod Coupling; it could just as easily be a piec of drilled and tapped Aluminum, Brass or steel rod.

I only know the Metric Thread size of the 617 Filter Bolt (14x1.5). I do not know if the 606 has the same size.

DeliveryValve · #**103** 10-01-2009, 01:17 PM

^^^

D-11, wouldn't be easier just to reroute the lines and install a different filter head (or modified) in a new location?

.

Diesel911 · #**104** 10-01-2009, 04:17 PM

Quote:

Originally Posted by DeliveryValve

^^^

D-11, wouldn't be easier just to reroute the lines and install a different filter head (or modified) in a new location?

.

Yes.
The previous post was an answer to a question that someone PMed me about. The Member wanted to preserve the origional Plastic Lines and their Banjo Fittings.
Also before that Member PMed me I had been thinking that if I was making a kit with a remote Filter to sell how would it be easy for the preson to install. So that is why my answer took the direction it did.

Also by doing it the way I suggested should your Filter get plugged on a trip some where it still allows you to use the Stock Filter. Although, you would have to hook the Return Line Banjo back to the Filter Housing.

I for got to include in the previous post how to easly preserve the origional Fuel Return setup if you made that adapter for the Filter Bolt (you would need to use a solid bolt to replace the Banjo Bolt).

Shawn T. W. · #**105** 11-24-2009, 10:52 PM

Quote:

Originally Posted by DeliveryValve

The 10 nominal Micron Rating is the problem with the NAPA/Wix version. They do not offer any other version that has a lower micron rating. I have found as well as Diesel911 that other manufactures of the same type of filter have different micron ratings. Because of this, Diesel911 and I think that all filters should have a micron rating printed on the filter somewhere to avoid confusion.

Here is the Baldwin screen print from the rep on compatable filters that use the same casings and gasket design.

So . . . if my understanding of this is right of these Beta or BX numbers . . . according to Cat http://www.cat.com/cda/files/1413039/7/micron.pdf and the Filter Council http://www.filtercouncil.org/techdata/tsbs/89-5R3.pdf the BF7591D has a "absolute" of 7, but filters out half of the 1-2 micron crud on the first pass, still better than the factory one . . .

For those of you that have done this or simular . . . are you happy with it's performance?