Nice install. Thanks for posting! Are you going to put in the drag-pointer restriction gauge on your 123, too, like on your VW? And if so, please post up your WOT restriction numbers so we can all be lazy.

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Currently converting a 1984 Toyota Land Cruiser FJ60 to use a 1985 300D engine and tranny... Engine/tranny are in, no transfer case or wiring yet.

Nice! Too bad that corner of my bay is so cluttered already....

Thanks! I'm not going to install drag-pointer restriction gauge on my MB just because the MB filter (30-micron) should have much less restriction than the VW (5-micron) and the fuel flow rate on the MB is much less than the VW. The VW uses less fuel of course, but it relies more heavily on fuel to cool the injection system - so in the VW fuel that's not injected passes through a fuel cooler and returns to the tank at a relatively fast flow rate (compared to the MB).

And, if you go with the 6" replacement filter restriction will be even less...

Cheers!

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Current Vehicles: 2001 Mercedes E320 Wagon | 1979 Mercedes 220D | 1995 Volvo 850 Turbo Wagon | 1993 Volvo 240 Wagon

Does anyone know the filtration micron size of the stock MB filter(s)?

R, nice pictures and write-up !! Why is there so much crud in that pre-filter?? Did that car sit a long time?

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1998 W210 diesel (wiped out by a texter)
Baum spring compressor "for rent"

Nice setup.. I might have to buy that as a Christmas gift to the Mercedes.

so far the car is getting about 80% of my christmas wish list

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Doesn't the filter on VW diesels have a water separator built-in? It probably wouldn't be as stout as the setup you installed but would probably be a lot cheaper to just grab the filter assembly from an old diesel VW.

Edit: Just read this:
So I guess the VW one isn't sufficient.

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-justin

1987 300TD, 1987 300TD
2008 R32, 2000 Passat Wagon

yes, the 123 final filter (spin on) = >20% at 5 microns:



yes, i purchased it from a guy that wasn't using it anymore. the revitalization has begun! i'm going to drain the tank and replace the tank strainer the next time the fuel guage gets down near E.

the FM100 replaced the OEM filter in my TDI - and i added an MB in-line pre-filter to the VW setup.

stock A4 VW TDI fuel filters do have a water seperator, BUT, the filtration efficiency is no where near as good as a FM100 5-micron. for example: OEM = 58% at 3-5 micron; FM100 5-micron: 92% at 2-micron, 95% at 5-micron, 95%+ of emusified water and 98% of free water.

replacing the FM100 (~$14) elements is cheaper (and much easier) than replacing VW A4 OEM filters ($29).

cheers!

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Current Vehicles: 2001 Mercedes E320 Wagon | 1979 Mercedes 220D | 1995 Volvo 850 Turbo Wagon | 1993 Volvo 240 Wagon

I am very curious to see how much water you capture. I'll be checking in with you periodically

Excellent! I’ll add that to my list of things to do.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

FWIW - which fuel additive you use (if any) can have a great effect on whether you can capture and drain off any water. If you use no additives you're probably going to be able to capture and drain off water. Stanadyne Performance Formula is one of the few additives that will enhance your fuel filter's ability to remove water. Most other additives will increase the fuel's ability to hold water in a micro-emulsion that can safely pass through your fuel system.

Here's some interesting reading regarding the type of micro-emulsion that Total/Elf, Primrose and FPPF additives use:

this sounds scary - i don't think i want to know the details...

FWIW - i have a CAT fluids analysis lab just down the road from both my home and office. oil analysis can help you determine and take actions to minimize engine wear. providing your engine with clean fuel and clean air greatly enhances your oils ability to perform optimally - and do so for an entire extended drain interval. this of course results in better performing, longer wearing engines. knowing this, i never take shortcuts regarding fuel and air filtration. [re: clean air, i recently discovered that the Hengst air filters have probably double the filtration area (twice as many pleats) as the Purolator 123 filter available at my local auto parts chain.]

cheers!

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Current Vehicles: 2001 Mercedes E320 Wagon | 1979 Mercedes 220D | 1995 Volvo 850 Turbo Wagon | 1993 Volvo 240 Wagon

Very interesting, I've been wondering about options for water separation systems. Thanks for the great writeup. Once I've got the 300D back on the road, I'd love to catch up and take a look at what you've got.

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1987 Mercedes 300D

I just put in a Stanadyne FM 100 housing with a 3.6" 30 micron filter on my 300SD. I also added a drag point vacuum gauge between the fuel pump and the FM 100. I'm getting 17 inHg after WOT on the way to 75 MPH. This seems a bit high. It can't be the new FM 30 micron... or maybe I got a bad one. Maybe I have a clogged tank screen too. I'm going to bypass the FM 100 and see what I get.

Does anyone know what the vacuum should be in between the tank and the fuel pump?
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83 300SD (Pepe)
03 Golf TDI (Sandy)
Both running on B100

Here's a photo of my FM100 installation completed this morning. Still need to dress the hoses.....

Attached Thumbnails

 

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Bob
'82 300D Petrol B-G Metallic