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  #1  
Old 03-24-2013, 12:16 AM
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M117 986 1977 & timing chain

I know the timing chain and rails on my W108 is something that needs revision.

Is this the same for W116s? I just got an euro 450SEL and don't know much about this car.

Also, Does anybody know a place near Orlando that can check and refill my AC with R12?
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1972 W108 280SE 4.5
1977 W116 450SEL
2008 W211 E63 AMG
1981 E12 528i BMW
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Old 03-24-2013, 01:31 AM
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Yes, it's nearly the same engine in the w116. This site has technical articles, one of which is about how to replace the chain. In that article it also shows how to check to see how much the chain is stretched. That will tell you how worn it is. Of course it's possible the chain was changed so there is little stretch, but the guides were not, and they are worn.

Csaba
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Old 03-24-2013, 02:32 AM
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Timing chain probably needs attention, but guides on a W108 should be metal and not need replacing. Later cars had plastic guides which can break and cause the chain to jump time.

If your W116 is a 75 or earlier, the engines are almost identical. Later CIS cars had hydraulic lifters and a different fuel injection system.

I'm surprised that you can't pickup R12 in Mexico?
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With best regards

Al

Check out the W114, W115 enthusiast website.
http://www.stroke8.org

http://www.w108.org

Join the Mercedes W108 group
http://autos.groups.yahoo.com/group/mercedesw108/

My 280SL restoration

http://www.w108.org/gallery/albums/a...0959.thumb.jpg
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Old 03-24-2013, 03:36 AM
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Quote:
Originally Posted by alabbasi View Post
Timing chain probably needs attention, but guides on a W108 should be metal and not need replacing. Later cars had plastic guides which can break and cause the chain to jump time.

If your W116 is a 75 or earlier, the engines are almost identical. Later CIS cars had hydraulic lifters and a different fuel injection system.

I'm surprised that you can't pickup R12 in Mexico?
I just got the car. I'm picking it up in Orlando next week and will drive it down.
The car is a 77 only 67,000 miles ... Only AC is low on coolant.

* I guess, Its not that important I think the weather is not that hot yet and windows down will do.
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1972 W108 280SE 4.5
1977 W116 450SEL
2008 W211 E63 AMG
1981 E12 528i BMW
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Old 03-24-2013, 03:39 AM
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Quote:
Originally Posted by vandor View Post
Yes, it's nearly the same engine in the w116. This site has technical articles, one of which is about how to replace the chain. In that article it also shows how to check to see how much the chain is stretched. That will tell you how worn it is. Of course it's possible the chain was changed so there is little stretch, but the guides were not, and they are worn.

Csaba
Thank, I did read a couple of DIYs.
The engine has low miles, but will take a look for stretch just to be safe.
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1972 W108 280SE 4.5
1977 W116 450SEL
2008 W211 E63 AMG
1981 E12 528i BMW
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Old 03-24-2013, 11:01 AM
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Quote:
Originally Posted by Adv_rider View Post
I just got the car. I'm picking it up in Orlando next week and will drive it down.
The car is a 77 only 67,000 miles ... Only AC is low on coolant.

* I guess, Its not that important I think the weather is not that hot yet and windows down will do.
If you drive through Dallas, I can top you up, but I suspect that this will be the very long way around. Check the local craigslist, there is always someone selling a can.
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With best regards

Al

Check out the W114, W115 enthusiast website.
http://www.stroke8.org

http://www.w108.org

Join the Mercedes W108 group
http://autos.groups.yahoo.com/group/mercedesw108/

My 280SL restoration

http://www.w108.org/gallery/albums/a...0959.thumb.jpg
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  #7  
Old 03-24-2013, 01:52 PM
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Thank you, Al. I thought of doing that to pick up the bumpers .... But it's a long way deviation and I don't have much spare time.

I'm doing this with the family and the road trip is 50% of the reason why I got this car.... Orlando, Panama City, New Orleans, Houston, Laredo.
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1972 W108 280SE 4.5
1977 W116 450SEL
2008 W211 E63 AMG
1981 E12 528i BMW
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  #8  
Old 03-25-2013, 12:08 PM
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116 and 117 timing chains are not the same.
The 116 chain has 186 links and the 117 has 198 links.
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  #9  
Old 03-25-2013, 12:34 PM
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Quote:
Originally Posted by 1960mog View Post
116 and 117 timing chains are not the same.
The 116 chain has 186 links and the 117 has 198 links.
Noted. But in my case both cars have the M117 engine:
117.984 on the W108 and 117.986 on the W116. Even so in not sure is the same chain, but will be sure to check it out.
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1972 W108 280SE 4.5
1977 W116 450SEL
2008 W211 E63 AMG
1981 E12 528i BMW
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  #10  
Old 03-26-2013, 08:31 AM
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mog probably thought you meant the 116 engine, not chassis. All m117s use the same chain from the 4.5 to the 5.6 regardless of application / chassis.
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