Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-26-2006, 12:53 PM
Registered User
 
Join Date: May 2005
Posts: 84
timing chain life

I have a 1985 190 2.3 8v. what is the suggested timing chain replacement interval. mine has 185000 miles on it and i do not have maintance records. the reason I ask is I am getting some rattle at rpm just before the shift. do I need to replace the chain or just the tensioner? thanks for any imput.
joe

Reply With Quote
  #2  
Old 06-26-2006, 02:53 PM
Registered User
 
Join Date: Mar 2006
Location: Scotland
Posts: 143
Your engine has a single row timing chain which would normally be changed around 100-120k miles , if you don't know whether yours has been changed I think now might be a good time.
The chain ,tensioner and guides should be changed at the same time. If this is the original chain I would think you would need a cam sprocket and crankshaft sprocket if the chain is badly stretched, as the teeth will be badly worn and the new chain will wear rapidly if they are not changed.
You will be able to tell if the sprockets are worn as the teeth will have a hooked profile on one edge instead of being symettrical in profile.
Hope this helps , Geo.
Reply With Quote
  #3  
Old 06-26-2006, 04:23 PM
Mistress's Avatar
No crying in baseball
 
Join Date: Apr 2006
Location: Inside a vortex
Posts: 626
Red face

I just replaced mine at 169,000 along with the guides. Just bought the car and had a feeling it had never been done. 1990 420 SEL.
Reply With Quote
  #4  
Old 06-26-2006, 04:51 PM
Registered User
 
Join Date: Jun 2006
Location: Myrtle Beach, SC
Posts: 107
Siduri19 > Where did you get your parts? I'm soon going to do my newly aquired '87 420SEL and I'm parts hunting
Reply With Quote
  #5  
Old 06-26-2006, 04:57 PM
Mistress's Avatar
No crying in baseball
 
Join Date: Apr 2006
Location: Inside a vortex
Posts: 626
Red face

Quote:
Originally Posted by lifeisabeach
Siduri19 > Where did you get your parts? I'm soon going to do my newly aquired '87 420SEL and I'm parts hunting
I had it done at my mercedes mechanic. You can order parts on line from Phil at this forum. He's very knowledgeable and you can get the parts delivered pretty quick.
Reply With Quote
  #6  
Old 06-26-2006, 07:34 PM
Fixin' anything moving
 
Join Date: Sep 2004
Location: Fort Worth, TX
Posts: 247
380 is a screwed up engine with its weight-reduced single row chain. When I bought mine (with a broken chain) it had 100k on it. This is not something to fool with. If you are doing the work on your own, then get the dual gears (5 of them) and a dual chain, and new guides (they are cheap). For the gears check out your junkyard for any SL,SE,SEC or SEL engine (420,500,560). If you need "verbal" help send an email...

Sorry, I just noticed it is not a 380, so please disregard..
__________________
1983 560SL Megasquirted (originally 380SL)

My former Mercedes:
1985 300SD ~190k
1990 560SEL
2000 C220 CDI
1983 380SEC 102k dual-chain conversion
2000 C280 70k (sold)
1987 300DT (W124 - sold)
1972 220D (sold)
1971 220D (sold)
Reply With Quote
  #7  
Old 06-26-2006, 11:04 PM
Registered User
 
Join Date: Mar 2003
Location: Pennsylvania
Posts: 16
Angry

Had to take my '99 C230K in today. Heard an underhood noise that was identified as a tensioner problem. Car has 65,000 miles on it. I asked the tech when I should replace the timing chain and he said 100K. So about $1000 dollars later it's getting replaced along with the fan clutch and all the gaskets that go with it. I'm happy that was all it was, but unhappy that stupid things like this continue to break. Never had these issues with any other car. My last Mercedes.
Reply With Quote
  #8  
Old 06-26-2006, 11:15 PM
Tomguy's Avatar
Vintage Moderator
 
Join Date: Aug 2002
Location: near Scranton, PA
Posts: 5,407
Mott: Your timing chain was replaced at 65k? And for a cost of $1000? Those are both absurd and you got ripped off

joseph c: It's 21 years old with 185k and has a single-row timing chain. On an engine with overhead cams and a single-row timing chain, 100k is typically the accepted interval. If you know how to measure the stretch itself (Probably similar to the procedure listed here), do so. If you hear slap, usually a new tensioner isn't enough - even with a weak tensioner a new, tight chain won't slap. Measure the stretch, then you can tell.
__________________
Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k
Reply With Quote
  #9  
Old 06-26-2006, 11:18 PM
Registered User
 
Join Date: Mar 2003
Location: Pennsylvania
Posts: 16
Tomguy - sorry, only the tensioner and fan clutch are getting replaced. By the time this car hits 100K, someone else will be driving it!
Reply With Quote
  #10  
Old 06-26-2006, 11:39 PM
Tomguy's Avatar
Vintage Moderator
 
Join Date: Aug 2002
Location: near Scranton, PA
Posts: 5,407
$1k for a tensioner and a fan clutch?

Unless there's something I am COMPLETELY missing about new MBs you are getting ripped off by whomever you are going to, and it doesn't sound like a reputable dealer.

Phil has a fan clutch listed at $108.47 and a tensioner at $83.30
__________________
Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k
Reply With Quote
  #11  
Old 06-27-2006, 11:55 AM
Dee8go's Avatar
Senor User
 
Join Date: Apr 2006
Location: The People's Republic of Arlington, VA
Posts: 7,193
Dual timing chain?

Is the benefit of a dual timing chain just redundancy? Is that why it's better than the single chain?
__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles
Reply With Quote
  #12  
Old 06-27-2006, 02:02 PM
blackmercedes's Avatar
Just a guy
 
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
Quote:
Originally Posted by Dee8go
Is the benefit of a dual timing chain just redundancy? Is that why it's better than the single chain?
Not exactly, but yes. It's stronger to begin with, and is less prone to both wear AND failure.

Keep in mind that the chain's life depends on the model (dual, single, etc.) and the length and path of the chain, as well as the maintenance that the engine had. The chain is oil bathed and frequent oil/filter service greatly increase the life of the chain. On the inline engines, the chain is short and has no direction changes. These tend to last longer than the chains on the V-8 cars that are very long and change direction.

M111 and M104 engines have very long loved chains thanks to the inline design and big dual-chain designs. M102/M103 engines last quite a while, but being single row, require more frequent changes. M116 engines have troublesome chain guides and should be inspected often. M117 engines are less troublesome than their M116 cousins, but being a V-8, owners should check for wear on a regular basis.

On my M102 engines, I replaced the timing chain at about 200,000km and found reasonable wear, but went ahead anyway for peace-of-mind. My current M111 engine is at 199,900kms and I doubt I'll replace the chain before 250K.

__________________
John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 01:51 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page