I think it is based upon the test protocol - which is supposed to be "indicative", but not necessarily the same as your system.

Think of it this way - they suspend particles of some size distribution in a fluid. They pump the fluid from one tank to another tank, via the filter. They knew the concentration, number and size range of the particles in the fluid they made for the test, and they can measure it for the fluid that got pumped through the filter. For some size cutoff, they can measure that so many percent of particles in some size range were removed, and thus a rating.

I am not sure if the multi-pass test is done in the same way (tank to tank), or as a function of volume and volumetric flow (recycle so many volumes of liquid then remeasure), and it may vary from spec to spec.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

Excellent thread ! Thanks for all the info guys . The amount of research and time that went into it is priceless . I think with the fuel quality nowadays this would be a piece of mind upgrade.

For all that have done the modification , how has it been long term?

I love the 240 but have always been skeptical of the small secondary filter with no way to bleed water off. I like the cat upgrade the craftsmanship on their filters almost makes you feel bad when you have to throw it away. I never thought it would fit on a 616 engine . It screams out" TONKA "I love overkill !

Everyone have a happy thanks giving I'll post pics on this thread of future findings.

__________________


Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

It doesn't just "fit" you need to thread the MB housing to IIRC 1" with 14 threads per inch pitch . . . at a banjo bolt that size, maybe make a bracket to push it away from the PS pump . . . still is not major if you got a tap . . . very do able! I'm looking into putting on one with water separation capability.

__________________
82 240D Manual 277K and still rolling!
02 Volvo S60 AWD For Sale

All of the above is listed in the Thread some place.

You do not have to alter the Stock Mercedes Fuel Filter Housing at all to to 1"-14 threads (Infact if you did so it would drill out too much metal and screw up the passages the Fuel gotes througn).

Tha CAT filter conversion has the advantage that by removing the adapter you could still use the Stock Mercedes Filter because you do not alter the origional Filter Bolt.

The spacer plate to move the filter away from the metal casting web below is just a matter of drill 4 holes in a flat plate of metal. That is not difficult.

Below is a pick of the adapter. The central hole is best drilled out on a Lathe but someone who is good with a drill press could do it.
You start with the threaded end of a 1"-14 bolt and you need to drill and tap it for the Filter Bolt Size (don't remember the size right off).

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

Yeah I seen the adapter and have access to a lathe so thats not a problem. I was just surprised the space was there to fit it with nothing more than the bracket and adapter. Gotta love the ease of these engines.

Thanks

__________________


Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

That was the next question. This forum is fantastic! I like this mod because of the ease to return to stock. Diesel 911 have you ever had problems with the adapter coming off with the filter? Also whats the overall length on the adapter? I guess you could use different adapters for other filter combos ?

Thanks guys enjoy your turkey day!

__________________


Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

When I started looking into the filter issues I found that I really did not understand how they worked.

I formally thought lets say 20 micron filter would not let any 20 micron particles pass through it.
My focus was also on particle size and not the volume of particles. (The wear that one 20 micron particle in your system compared to the wear that 1 million 20 micron particles would cause.)

Now I know that is not so. I think it is the fact that the same Oil/Fuel passes many times through the filter that is what keeps the Oil/Fuel clean.
And, the multi pass works to keep the Oil/Fuel clean under normal circumstances until something unusual happens to over load the system.

When that happens passing 50% of the 20 micron particles and smaller pass through the filter becomes a wear issue due to the rise in the volume of 20 micron and smaller particles. (This is more critical in your Fuel System then the Lubrication System.)

Something else I read is that a 20mm will also filter out some 0.5 micron particles. As an example. If I throw a hand full of Marbles at a Chain Link Fence; even though the holes in the Fence are bigger than the Marbles the Fence will keep some Marbles from going through. Or, in the case of a Filter it traps some of the 0.5 micron particles.

And, yes as the Filter is used it filters better until it becomes completely

__________________
84 300D, 82 Volvo 244Gl Diesel

The Adapter in the pic is 1 inch in length. However, for the CAT and the WIX Fulter I have used there is nothing inside of the filter to obstruct a longer one.

It is best to obtain the Filter you plan to use and measure that.

The only time I have changed my filter was when I went fromt he WIX to the CAT. At that time the Adapter stayed in place.

If the adapter did come out with the filter, just unscrew it.

The biggest problem the adapter commng out with the Filter would cause is if you throw the Filter away with it still on.

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84 300D, 82 Volvo 244Gl Diesel

Thanks! Now to find the time. I guess it wold work with either banjo bolt ? Crush washer as well as o-ringed. Probably better with the O-ring though.

__________________


Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

OK, my mistake . . . I forgot or missed post #10 in the other thread . . . even though I read it all a few times!

__________________
82 240D Manual 277K and still rolling!
02 Volvo S60 AWD For Sale

Although I am putting d-11 on the spot, but I am sure he can make several adapters for like 20 bucks a pop. (I got one for another diesel project and it is very well made) You'll just need to source the extension plate. That will save you a lot of time.

Both types of Banjos work. I prefer the 0-ring with this mod.



.

__________________
1983 123.133 California
- GreaseCar Veg System

Seems like the oring would seal better. I see your using wvo how does it work with the cat filter?

Will the older filter head accept the oring bolt , or its a whole diffrent animal?

__________________


Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes

No I am not using the CAT 1R-0750 filter with WVO. I am using the CAT 1R-0750 on another vehicle. I am running two Baldwin BF7591-D with my WVO system. One for the diesel and one for WVO.


The older filter head will not accept the newer style banjo. You will have to find a filter head that has a manufacturing stamp of '83 or newer in order to use the double O-ring setup.



.

__________________
1983 123.133 California
- GreaseCar Veg System

For pictures of a cut-open fuel filter, see post #19 in this thread.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Thanks , that was what I was looking for. Does the spring go on the bottom and push the filter up? The bottom is where I have the magnet so if it works the opposite way the magnet won't be doing much.

I seen the dremel tool and I use a large pipe cutter. I'm trying to make a simple cutter that will be a DIY and work on filters up to 5" It will be made with locally available parts simple and cheap. I have a welder so that was first choice , but then I figured some may not have access to one. I will try it with a drill and bolts and post results for those who are interested.

They sell these cutters for airplane filters and race cars on the internet from 40.00 to the 100's just google oil filter cutter .

__________________


Experience : what you receive 3 seconds after you really needed it !!



86 300SDL 387,000? Motor committed suicide
81 300SD 214,000 "new" 132,000 motor
83 300SD 212,000 parts car
83 300SD 147,000

91 F700 5.9 cummins 5spd eaton 298,000
66 AMC rambler American 2dr auto 108,000
95 Chevy 3/4 ton auto 160,000
03 Toyota 4runner 180,000 wifes