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Old 09-26-2001, 10:10 PM
Rich126 Rich126 is offline
Registered User
Join Date: Sep 2001
Location: Queens, NYC
Posts: 158
420SEL Timing Chain

I know it's recommended to replace a timing chain in the 420 engine every ~100k, but I recently purchased an 88 with 46k on it and am considering having it changed. The chain was never changed before, the car is 13 years old, and I know sometimes the plastic guides can dry out with age, break off, and drain out your savings account.

This happened already to me with my '87, so I'd like to avoid a flashback. Am I being overly cautious, or should I just go for the (relatively) cheap insurance plan and change it ASAP. The car has had oil changes regulary, from what I can gather out of recent service records. Has anyone seen a chain break on a 420 with less than 100k on it?

Any comments are appreciated.
2003 S500 Black/Charcoal
1990 560SEL 61k Arctic White/Grey

1988 420SEL Black/Palomino Sold @ 85k
1987 420SEL Midnight Blue/Grey
1986 420SEL Diamond Blue/Grey
1983 380SEL Champagne/Palomino
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