Thread: mid-late 1980s S-Class V8- good price for chain replacements? (87 420SEL)
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Old 01-19-2005, 01:59 AM
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wbain5280 wbain5280 is offline
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Location: Northern Va.
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You need to find out how much wear the chain has. Take the valve covers off and align the notches on the cams. Then look at the crankshaft timing marks to figure the stretch. Anything less than approx 10 - 12 degrees of stretch is basically OK, more is dangerous. The valves and pistons can collide. The chain guides also figure into the 'stretch'.
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Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.
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