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Old 10-20-2001, 03:09 AM
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Question zero clearance head?

The timing chain on my 1976 (4 cylinder) 230 stretched to the point of getting jammed. I don't have a manual, and I was wondering if anyone knew whether it had a zero clearance head (and that I am very likely looking at bent valves) or if just replacing the timing chain and tensioner will be enough?
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Old 10-20-2001, 08:36 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
ALL MB's will bend valves IF the timing chain is off by several teeth.
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Old 10-20-2001, 11:57 AM
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Join Date: Jan 2000
Location: PA
Posts: 5,440
I had several timing chains jump and didn't bend the valves. The cam towers broke which saved the valves. I always thought the cam towers were designed to break to protect the valves because the castings are so thin at the bottom. This was on a 190D engine but others may be different. ~~~~~~~~~PEH~~~~~~~
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