I have a 1982 240d with a 4 speed manual transmission.
As a test, I removed some of the vacuum lines and capped them off with golf tees.
I capped off the metal port to the injection pump and the plastic piece connected to the injection pump(I think this is supposed to be for the transmission but not sure why since it's a manual transmission).

I've noticed no difference in the driving. I'm also blocked off the EGR so there is no need for vacuum going to that.

Am I damaging the engine or getting worse performance by doing this?

Please look at picture.

Thanks.

pete

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You can actually remove that entire plastic unit (VCV) from the IP if you wanted, it's not doing anything, nor are your golf tees Somebody fitted an IP from an auto car. Or swapped gearboxes...

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

Interesting. So the original manual tranny car didn't come with that?

Thanks.

pete

Only ones that did were the later automatics that needed vacuum to modulate the shifts (722.3? out of my depth here).

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

NZScott got it.
Take the VCV off and keep it as it is NLA as I remember.
You may need it if you get a W123 or W126SD, they were used on those auto trans.
Or some one else may be looking for one.

I have seen the VCV`s on 240`s in the yards with manual gear boxes. probably a trans swap and they left it on not knowing what it is or does.

Come to think of it, my 82 240 parts car has one.

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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

Mystery solved as to why you had a VCV on a manual, from your other post a week or so ago- I was wondering if the engine was swapped in..