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  #1  
Old 04-13-2005, 01:33 PM
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Yo Dad - the valve cover is off!

My son and I are going to check the valve clearances but he Seems to think there's other stuff to check while we're there....Where can I find guidance?????
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1980 240D Euro delivery 4 speed manual silver/blue
~160K miles
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  #2  
Old 04-13-2005, 01:35 PM
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Quote:
Originally Posted by stayalert
My son and I are going to check the valve clearances but he Seems to think there's other stuff to check while we're there....Where can I find guidance?????
Timing chain stretch..............

but I haven't done it myself you so I can't be of help explaining that.
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Old 04-13-2005, 01:53 PM
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That's what he said and all he knew was where the chain was...That's why he's pointing to it....
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  #4  
Old 04-13-2005, 01:59 PM
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Quote:
Originally Posted by stayalert
That's what he said and all he knew was where the chain was...That's why he's pointing to it....
well its really an issue to know by 150,000 miles...if the car didn't have frequent oil changes in its life it may be due......if it has had frequent changes it would have little wear and you would know this too.
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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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  #5  
Old 04-13-2005, 02:02 PM
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Turn the engine over clockwise (facing the front of the engine) with a 27mm socket on the crank pulley until the match mark on the cam sprocket lines up with the notch in the cam tower. Then look at the timing indicator on the crank pulley and read the chain stretch. You should be less than 5 degrees off TDC.
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  #6  
Old 04-13-2005, 02:02 PM
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W123 Timing Chain Stretch

Q on timing chain stretch...

These 2 links should give you some pretty good information.

Just to sum it up a little the timing is checked at 2mm valve lift on intake #1.

Danny
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Last edited by dannym; 04-13-2005 at 02:11 PM.
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  #7  
Old 04-13-2005, 02:30 PM
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timing chain stretch

DON'T FORGET to take the wrench off of the crank pulley. - th
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  #8  
Old 04-13-2005, 02:34 PM
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Hey is that EGR disconnected ....lol!
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  #9  
Old 04-13-2005, 03:04 PM
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Quote:
Originally Posted by Shellnekov
Hey is that EGR disconnected ....lol!

Nope. Well let me clarify that....I don't know. I've driven the car 12 miles from the place of purchase, removed the liscense plates plates and started to take it apart. I will be doing some testing with and without the EGR once I get the beasty back into reasonable roadworthyness.....
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  #10  
Old 04-13-2005, 03:13 PM
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Quote:
Originally Posted by stayalert
Nope. Well let me clarify that....I don't know. I've driven the car 12 miles from the place of purchase, removed the liscense plates plates and started to take it apart. I will be doing some testing with and without the EGR once I get the beasty back into reasonable roadworthyness.....
Make sure that a golf T or a ball bearing doesn't get stuck in the vacume line to it....
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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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  #11  
Old 04-13-2005, 03:19 PM
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Quote:
Originally Posted by boneheaddoctor
Make sure that a golf T or a ball bearing doesn't get stuck in the vacume line to it....
No worries...When I get to the point where I can register and drive the thing and then tuinker with the EGR etc. I will be SO excited!!!
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~160K miles
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  #12  
Old 04-13-2005, 03:40 PM
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My point of that being is the EGR cause the crud buildup in the intake manifold.
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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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  #13  
Old 04-13-2005, 03:52 PM
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Understood and thanks for offering the commnets. I've been driving a VW diesel for a while with a modified CCV filter and mods accomodating the intake clogging concern. With the Benz I intend to return it to a stout baseline as originally designed (a clean slate so to speak)....When I accomplish that I will begin to maintain and modify the car in a manner that suits my interests (currently targeting 2 tank WVO system)

Funny, currently it seems I'm making mods to return the car to "normal"....

Your point about assessing chain stretch as a measure of how the car was previously maintained was also a good one in my view.
Cheers
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1980 240D Euro delivery 4 speed manual silver/blue
~160K miles
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  #14  
Old 04-13-2005, 04:09 PM
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Quote:
Originally Posted by stayalert
Understood and thanks for offering the commnets. I've been driving a VW diesel for a while with a modified CCV filter and mods accomodating the intake clogging concern. With the Benz I intend to return it to a stout baseline as originally designed (a clean slate so to speak)....When I accomplish that I will begin to maintain and modify the car in a manner that suits my interests (currently targeting 2 tank WVO system)

Funny, currently it seems I'm making mods to return the car to "normal"....

Your point about assessing chain stretch as a measure of how the car was previously maintained was also a good one in my view.
Cheers

I am pulling my intake manifold off and cleaning it out and I know is gummed up....I am at that time going to install a block heater which as I don't have a lift is the safest and easiest way for me to do it.

I am still undecided about installing a early 300SD intake and exhause manfold which is pre EGR. Before I go through the trouble to remove 23 years of gummy crud out of it. Point of note is my '79 300SD had a clean intake when I put a block heater in it last year. And that was the last year of a non-EGR equiped 617 Turbodiesel. I plan to do this in a couple weeks after I get the gasket set.

Its also important to know the amount of stretch because a broken timing chain can really ruin a otherwise perfectly good engine....and your disposition when it breaks.
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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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  #15  
Old 04-13-2005, 04:24 PM
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"...........................a broken timing chain can really ruin a otherwise perfectly good engine....and your disposition when it breaks."

eeeeesh. It would make me sad and would quite likely end the expirament which I am currently pursuing.....And that's why I am searching and reading voraciosly and asking so many pesky questions....Thanks again...
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1980 240D Euro delivery 4 speed manual silver/blue
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