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  #1  
Old 07-29-2014, 10:44 AM
Stretch's Avatar
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Little vacuum connection on M102 manifold - what's it for?

G'day Folks,

I've asked elsewhere but have had no serious reactions!

Does anyone know about this connection on a M102 intake manifold?



It sits at the back of the fuel distributor thingy (this is missing in the picture - in case that's not clear - and yeah I know the start valve is the wrong way round but I've already fixed that!)

It came with this bit of fabric covered pipe with a screw stuck in the end of it



Could this be a vacuum connection for an automatic transmission (I have manual shifting gearbox so not needed)?

Thanking you all in advance - need to know - must know

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #2  
Old 07-29-2014, 11:20 AM
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Whoap! This thread from the UK seems to confirm that it is for the automatic.

Harsh auto shift - vacuum issue?
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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."
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  #3  
Old 07-29-2014, 12:00 PM
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Quote:
Originally Posted by Stretch View Post
G'day Folks,

I've asked elsewhere but have had no serious reactions!
Did you get replies like....

What's it for?

Vacuum.

lol had you not said "no serious reactions" I would have just quoted you and posted "vacuum"
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(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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  #4  
Old 07-29-2014, 02:16 PM
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He who shall not be named did make a comment like that but he's just redeemed himself...
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #5  
Old 07-29-2014, 04:02 PM
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Quote:
Originally Posted by JamesDean View Post
Did you get replies like....

What's it for?

Vacuum.

lol had you not said "no serious reactions" I would have just quoted you and posted "vacuum"
I said it was part of the in-car interior vacuuming system -- just hook up a hose & clean the interior!

The vacuuming hose is NLA, of course.
__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."
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  #6  
Old 07-29-2014, 04:23 PM
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Quote:
Originally Posted by Jooseppi Luna View Post
I said it was part of the in-car interior vacuuming system -- just hook up a hose & clean the interior!

The vacuuming hose is NLA, of course.
Oh I'm sure we could jimmy up something! So how does this work, I just rev the engine higher and I get more powahh?

RED LINE THIS THING ALREADY!
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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  #7  
Old 07-29-2014, 05:27 PM
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As I explained earlier there is really no need for a vacuum cleaner in my car - it is always spotlessly clean - just like the group captain's daughter (who always kept her cockpit clean)
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #8  
Old 07-29-2014, 05:38 PM
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On my 2.6 there are 2, one for the transmission (automatic) and one for the economy gauge on the instrument cluster. The tempmatic climate control also sources vacuum from one of the two. When I added adjustable headlight beam functionality, I tapped into the same vacuum source.
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  #9  
Old 07-29-2014, 05:41 PM
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Thanks Patrick total confirmation - car vacuuming attachment myth busted.
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #10  
Old 07-29-2014, 08:40 PM
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Quote:
Originally Posted by JamesDean View Post
Oh I'm sure we could jimmy up something! So how does this work, I just rev the engine higher and I get more powahh?

RED LINE THIS THING ALREADY!
LOL. Actually, you'd want to idle it for the maximum amount of vacuum, and then do an Italian job no it afterward to flush out all the junk that you poured into the engine.
Quote:
Originally Posted by Stretch View Post
Thanks Patrick total confirmation - car vacuuming attachment myth busted.
Shhhh! I was about to start selling replacement vacuuming hoses... there goes my $$$ for 7.5 mm elements .
__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Last edited by Mölyapina; 07-29-2014 at 10:03 PM.
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  #11  
Old 07-29-2014, 10:19 PM
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Quote:
Originally Posted by Jooseppi Luna View Post
LOL. Actually, you'd want to idle it for the maximum amount of vacuum, and then do an Italian job no it afterward to flush out all the junk that you poured into the engine.
SHH how am I supposed to sell engines, if you tell people not to red line the hell out of them?!
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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  #12  
Old 07-30-2014, 12:47 AM
Stretch's Avatar
...like a shield of steel
 
Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
Quote:
Originally Posted by Jooseppi Luna View Post
LOL. Actually, you'd want to idle it for the maximum amount of vacuum...
This ain't no diesel mush (more's the pity). You get lower air pressure with more air / faster air flowing though the inlet manifold so you do need high RPMs. And even a piston vacuum pump to a point "makes more vacuum" as it pumps faster - the reason why you get reduced vacuum at higher engine speeds is due to a little valve.
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote
  #13  
Old 07-30-2014, 07:21 AM
Mölyapina's Avatar
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Quote:
Originally Posted by Stretch View Post
This ain't no diesel mush (more's the pity). You get lower air pressure with more air / faster air flowing though the inlet manifold so you do need high RPMs. And even a piston vacuum pump to a point "makes more vacuum" as it pumps faster - the reason why you get reduced vacuum at higher engine speeds is due to a little valve.
Hmm, that's interesting -- but makes sense.
Quote:
Originally Posted by JamesDean View Post
SHH how am I supposed to sell engines, if you tell people not to red line the hell out of them?!
REDLINE THOSE PUPPIES, FOLKS.

__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."
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