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  #1  
Old 03-03-2014, 08:15 PM
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1985 CA emission 617 owners, You NEED This:

Now available for your California Emissions OM617: Trap-Ox (or Trap-Cat) Bypass "Test" Pipe. The cost is $150 (Postage included). The prototype was made with harvested flanges from an old trap-ox, but the production units will be made with new laser cut flanges. The pipe is 16 gauge DOM, and is TIG welded. Gaskets and EGR block-off plate included.








Here is the first candidate for the new pipe: My bro's 1985 300D.


I first removed the downpipe, turbo oil line, intake tube and other bracketry:


I then removed the 4 turbo bolts, braces, and exhaust output flange to remove the turbo:




Next I removed the 3 bolts holding the trap-ox, the EGR, and the removed the trap-ox :


The pipe installed with gasket and factory braces:


Next I installed the turbo and took it for a test drive. The final result:


The installation makes it easier to access the starter, and also will improve performance (especially if you have a plugged trap!).....Rich

Check out:
My new project: Trap-Ox Bypass Pipe. 1985 CA emissions 300D


Last edited by ROLLGUY; 03-03-2014 at 09:12 PM.
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  #2  
Old 03-03-2014, 08:31 PM
Save the manuals!
 
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I thought the trap ox was removed under warranty in most cars.
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  #3  
Old 03-03-2014, 09:09 PM
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Quote:
Originally Posted by gatorblue92 View Post
I thought the trap ox was removed under warranty in most cars.
Maybe on the 126's with the 603, but the 617's had them replaced (under warranty) including the turbo if it got ruined. The installation of this pipe makes the area a lot cleaner, and easier to work on other nearby parts. The starter brace (if it is still there, as most people leave it off) is a real pain to get to with the trap in place, but very easy to access from above with the trap gone...Rich
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  #4  
Old 03-03-2014, 09:11 PM
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603s had the trap ox replaced with a straight pipe as part of the recall. They added a cat downstream in the exhaust line post turbo.
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The OM 642/722.9 powered family
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both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
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  #5  
Old 03-03-2014, 09:50 PM
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Quote:
Originally Posted by ROLLGUY View Post
.
The installation makes it easier to access the starter, and also will improve performance (especially if you have a plugged trap!).....Rich
Speaking if starters, you can now use a cheaper, readily available Federal starter with this setup.

.
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  #6  
Old 03-03-2014, 11:55 PM
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Quote:
Originally Posted by DeliveryValve View Post
Speaking if starters, you can now use a cheaper, readily available Federal starter with this setup.

.
Yes, I hadn't thought of that. That would be a good time to install this test pipe, when your starter goes bad= "kill two birds with one stone". Thanks, Rich
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  #7  
Old 04-07-2014, 04:27 PM
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I now have the laser cut flanges, and the pipes are in production:

These should be ready to ship soon. I just need to find a good source for the gaskets. For some weird reason, the factory 3 bolt flange does not have a gasket. However, I will be providing one with the kit along with a turbo gasket....Rich
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  #8  
Old 04-26-2014, 12:41 PM
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Before starting this job, I suggest buying a new turbo-to-intake manifold rubber seal, since those are real cheap (I think same PN for 85 CA). I had oil dripping from that junction in one 300D and fixed it (w/ turbo on) by jamming O-ring material into the gap, then self-fusing silicone tape.

Rollguy, I suggest your brother replace that evil "aux water pump" with 5/8" heater hose (I used silicone) since not needed in the lower 48. It can fry your climate push-button and probably cause the whole car to catch fire (suspected in several under-dash fires).
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  #9  
Old 05-08-2014, 07:41 PM
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EGR block-off plate included

I am including an EGR block-off plate kit with every pipe purchased.


I am having a hard time finding the EGR gaskets cheap enough, so I may just have them made. I will be offering this kit for the Federal models when I get the manifold block-off discs made (should be soon).....Rich
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  #10  
Old 06-13-2014, 01:47 AM
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I now have the complete EGR block-off plate kits available. The bypass pipe comes with everything but the disc, as it is not needed. The photo is of the kit I sell for all other MB Diesel engines:
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  #11  
Old 06-13-2014, 09:03 AM
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Fancy packaging.

Also, watch your focus
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  #12  
Old 08-30-2014, 07:47 PM
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thanks Roll guy!

I got the kit from Rich Roll Guy - the fabricated "test pipe and the EGR bypass." It worked great! All it took for removal of the turbo and the trap oxidizer was lots and lots of patient wrench work, with a variety of wrench shapes and lengths. Installation was even easier. I'm taking it on a long test drive next week.

My 85 Mercedes 300D, California emissions.
1985 CA emission 617 owners, You NEED This:-85mercedes.jpg

the turbo, with a chunk of the ceramic insides from the trap jammed in the throat of the turbo. It didn't make it to the innards, I got lucky!
1985 CA emission 617 owners, You NEED This:-img_20140826_135905.jpg

This is the offending trap ox, and EGR. I hate it.
1985 CA emission 617 owners, You NEED This:-img_20140826_135456.jpg

The EGR bypass plate in place.
1985 CA emission 617 owners, You NEED This:-img_20140828_134306.jpg

Thanks Rich!
Tom
Attached Thumbnails
1985 CA emission 617 owners, You NEED This:-img_20140828_135140.jpg  
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  #13  
Old 12-17-2014, 11:03 PM
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trap oxidizer

Help
Rich RollGuy,
Are the pipes still for sale?
I have a nasty leak between the flange and the pip on the trap oxidizer side of the pipe.
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  #14  
Old 12-18-2014, 01:08 AM
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Quote:
Originally Posted by RonawitZ View Post
Help
Rich RollGuy,
Are the pipes still for sale?
I have a nasty leak between the flange and the pip on the trap oxidizer side of the pipe.
pm sent
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  #15  
Old 01-09-2015, 01:34 AM
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Price change

As of January first 2015, the price is $150 plus shipping/handling/insurance.

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