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Old 10-07-2003, 10:26 PM
cbdo cbdo is offline
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Join Date: Dec 2002
Location: Grand Rapids, MI
Posts: 766
Plagiarizing a link from a similar thread above, here's a discussion of the issue:

AFAIK, it's not that the single-row chain breaks, but that it stretches a bit sooner than the double-row. It's chain stretch that allows the chain to slap against the plastic guide rail, which when it's old and brittle breaks, which leaves a piece to get caught in the chain and cause it to jump a sprocket, which causes mistiming and valve damage in the engine that Jack built.
Craig Bethune

'97 SL500, 40th anniversary edition

'04 Olds Bravada (SWMBO's)
'06 Lexus ES330
'89 560SL (sold)

SL--Anything else is just a Mercedes.
(Kudos to whoever said it first)
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