i have an 87 300d om603 and im looking to remove as much of the vacuum system as possible to make it cleaner looking and reduce failure points.

So far i have unpluged the EGR valve and the ALR? valve and have removed the big maf looking thing under the airbox.

Tomorrow im going to remove the alda and install a boost gauge.

I heard things about removing the vacuum pods under the airbox and things like that but cant find a definite answer so any help is really apreciated!

Thanks, Adam

this falls into "Do-at-your-own-risk"

That being said, I did cleaned up all of the suggested lines from the diagram since my climate control pods dont work, so there was no point for me to keep anything going to the cabin. The only line that I kept was the black line going from the cabin into the IP port (clean air source). and yes, you can remove the emission pods under the air cleaner (i did mine)

Turbo gauge is a must in this case IMO since you will remove all the overboost protection.

(diagram is from the board member, cant remember the name to give him credit for it)

Attached Thumbnails

 

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87 300D sedan rarity with the #14 death stamp SOLD

What about vacuum lines for 1984 300D? I found a black tube disconnected under the steering colum that leads to the "Y" connector by the ALDA and routes to the cruise contro mechanism on top of the valve cover.

I would like to clean up the valve cover area by removing the cruise control system. thank you

That line is open to the atmosphere as a bleed for the transmission.

It's in the cabin to draw in clean air.

You can remove the cc actuator and associated linkage.

Search egr delete.

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83 SD

84 CD

As this is your first post, I'd say, have a look around on the forum first... minimalist vacuum lines for 603 has been covered nicely before. See if you can find it using searching skills, if not report back here.

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Cheers!
Scott McPhee

1987 300D

My other post was about 617 engines, the 603s may be the same, maybe not.

UPDATE: Yeah, similar anyway. That is a vent line.

Attached Files

vac for 603:07.1-500.pdf (180.6 KB, 342 views)

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83 SD

84 CD

Here are a couple good threads.

OM603
http://www.peachparts.com/shopforum/diesel-discussion/287633-w124-300d-removing-all-unecessary-stuff.html

OM617
http://www.peachparts.com/shopforum/diesel-discussion/264272-egr-delete-remove.html

http://www.peachparts.com/shopforum/diesel-discussion/285921-quick-1985-617-egr-delete-question.html

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Thank you! By accident I managed to mimic what you've done to your car. I am happy to hear that the black tubing does not lead or attached to anything. It sure makes the engine bay look much cleaner. I also did the EGR MOD manking my cap off plug for the exhause and the plate for the intake manifold. Camera is MIA when I find it I will take photos of the lastest addition to Miss Doris.

You're welcome, we await your pics.

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83 SD

84 CD