Looks like you are almost done!

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84 300D, 82 Volvo 244Gl Diesel

I have an Amsoil bypass filter, but have yet to install it. It came out of an SD, and the filter housings are slightly different than the D. Supply was tapped into the rear of the panel, with return into the valve cover. I keep waiting on a time to install this, but have other projects in the way.

any chance you can post some additional details on this bypass filter?

pics are also welcomed

thanks,
manny

In the attached Diagram I removed Bolt #94 and replaced it with one I had drilled out and installed a tube to act as the Nipple to attatch the drain Hose for my Bypass Oil filter.
That way I did not have to Drill and Tap anyplace else on the Engine.

The guy who started this thread used an Amaoils Bypass Filter.

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

Yes installing a remote filter is possible.
On my 240d I have a frantz filter installed.

The best place to tap into the oil line is at the input for the oil pressure gauge, the T fitting is hard to find, but it is available from a few places, and there is not need to drill anywhere to find an oil pressure point, the fitting size is 12x1.5 mm, and make sure the T has a hexagon shape otherwise it will not fit.

When working on removing the oil sender hose to install the T, use a nut wrench such as
http://www.harborfreight.com/5-piece-metric-double-end-flare-nut-wrench-set-99993.html
since it is normally very tight.

Here is a link for one place that has the T:
http://www.speedograph-richfield.com/html/oil_pipe_lines.html
the part number is TP6

When installing the 1/8 hole has to face the opposite direction of the MB filter so that you can use a 1/8 x 27 NTP fitting, otherwise a washer on the T may help so that the 1/8 faces a different position.

Since the bypass filter uses a restrictor 1/16" in diameter, the oil pressure gauge will keep working normally.

For the return I use an amsoil swivel fitting, but rubber stops for the hood were a little worn out, and made a little dent on the hood with the swivel fitting, I have replaced the rubber stop for the hood, and the amsoil swivel fitting seems to be working but there is almost no free clearance for the hood, but a better location for the return is probably the valve cover.

The Seller of the TP6 T fitting appears to be in the UK not the US.
Is there a US source that you know of?

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84 300D, 82 Volvo 244Gl Diesel

I am so interested in how you did this MOD with taking #94 and using it to return oil to the engine. Can you post picutures? I have not installed the centiruge filter until I find a return port to the engine for the clean oil. Thank you.

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1984 300D, 1972 LT1 Corvette, 2014 Artic White 3LT/Z51 C7, 2013 650i Convertible BMW, 1994 Kawasaki Vulcan, 1992 Yamaha Seca II and 1996 Dodge Ram 2500.

You might not be happy with it. I bought another Bolt that was the same length and threads and drilled a 1/4 inch Hole through the Bolt. I have had some 1/4" Stainless Steel Tubing laying around sinc the 1980s.

I roughed up the outside of the Tubing with Sand Paper and degreased the hole I drilled in the Bolt and the Tubing end. When dry I coated them with JB Weld and inserted the Tubing and let the JB Weld Epoxy Cure.

I cut the Tube so it projected out of the Bolt as much as I wanted and used that Bolt+tubing to replace the one on the Engine; afterwhich I attached a 1/4" return Hose to it and a Hose Clamp.
Note: there is no Nipple on the Tubing.
I did not take any pictures that I can remeber and I don't feel like removing it just to take some pictures.

Why I did not used a Fitting with Jags on it.
The smallest Pipe Tap I have is 1/8". That big to be used on the size of Bolt that goes into the Engine which I believe is 12mm.

There is a size Pipe Tap under 1/8". I don't have one and don't know where I could get one at a resonable price and don't know where I could get the Brass Fitting to fit it. Not at the local Hardware Store for sure.

I think a better alternative is to use the Plug shown in the Pic on the Fuel Injection Pump. You can remove it put it in a Vice and Drill and Tap it and I believe it is has a large enough diameter for a 1/8" pipe threads.

If it gets buggered up or just won't work for some reason that Plug ought to be cheap at the Junk Yard.

Using the Plug was someone elses Idea. I wish I had though about it before I installed My Returnline.

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84 300D, 82 Volvo 244Gl Diesel

Thanks for all your help with this!! I cant wait to do it!

I was thinking of T-ing off the oil pressure sending unit fitting for the supply to the filter...does anyone know the thread size in the filter housing?

I'd rather source the parts before taking my sending unit apart.

checho, so where does the return attach to? Do you have any images of your install?

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

Ideas others have used for the Retun Oil from a bypass Oil Filter.

Drilled and tap the Valve Cover as ForcedInduction did in post #30

Amsoil I believe sells Oil Fill Caps that have the return fitting on the cap. However, I do not think they make one specific for Mercedes.

When I fist did mine I removed the Dipstick and had the return Oil going down the Dipstick Tube. It worked and required no drilling but was a pain to check the Oil becaue I had to remove the Hose attachment to insert the Dipstick.
So I relocated the return as in Post #70

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84 300D, 82 Volvo 244Gl Diesel

Love the idea...Have a Frantz, locating fittings...would love to put the clean oil into the pump but aside from my concern with the filter clogging and starving the IP, I only see one oil line from the water pump to the IP...where's the out? or is it the IN that im looking for? I was going to use a T at the pressure sending unit at back of the filter housing for the feed and go into the valve cover for the return.

That skinny Plastic Line it the Oil Supply Line. The Oil inside of the Fuel Injection Pump drains out through the front of the Fuel Injection Pump.

There is a Plug on the top of the Fuel Injectipn Pump Govenor Housing See the gree circle in the pic.
You will have to find some place else to tap into the Pressurized Oil.

Just like in the previous post you are also going to need a restricted Fitting; easy to make.

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

Thanks for posting, however that pic is of little help. The only oil in I see comes from the water pump..wouldn't I then have to plug that out put? Still worried about a clogged filter starving the pump...

The Oil Line for the Fuel Injection Pump does not come from the Water Pump. The Water Pump Bearings are Greased and Sealed and need no Oil From the Engine to lubricate them.
The Fuel Injection Pump Oil Line comes out of the side of the Engine Block and is actually closest to the Vacuum Pump.

I am not suggesting that you divert the Fuel Injection Pump Oil Supply through the Bypass Oil Filter and Back into the Fuel Injection pump.

The Plug that I circled in the Pic is not where you would tap into the Oil but an easy place where you can remove that Plug, drill and tap the Plug for a Fitting so that you can return the Oil Back into the Engine.

Over all I believe the best place to tap into the pressurized Oil is the Lid of the Oil Filter; if it is done with care.

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84 300D, 82 Volvo 244Gl Diesel