Thread: Timing chain on a 420 SEL
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Old 12-31-2003, 12:10 PM
darius darius is offline
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Join Date: Mar 2000
Location: Charleston, West Virginia, USA
Posts: 110
Does anyone have any experience with cutting part of the new upper rail away to prevent its later breakage? I've seen others on a listserv talk about cutting away part of the upper rail to prevent it from breaking off.

Just curious, as I had my 87 420SEL's chain, rails, and tensioner changed within 3 hours of purchase (had to drive her to my home mechanic)...so, I am huge advocate of this maintenance. And, yes, at 115k miles, my upper chain rails were brown and brittle.
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John J. Meadows
'87 420SEL
'85 190E 2.3L 105k mi.
'83 300D Turbo 298k mi.
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