Date: Sun, 24 Jun 2001 16:38:35 +0100 From: danny <dannynopsamia-espreZZo.com> Subject: Re: Timing chain
My local Saab dealer tells me that timing chains rarely break (at least on the 9000, I didn't ask about other models). What he did say was that although the chain is unlikely to break what does happen is that the chain will eventually wear a hole in the timing chain cover, the oil will be drained and the engine seize. At anything over 100k miles, and with an audible timing chain, replacement is not bad advice (and usually to do the cam balancer chain at the same time). Regards, Danny http://www.gaggia-espresso.com (a purely hobby site) swap Z for above characters in email address to reply RONALD M FRIESEN wrote: > My Saab tech has suggested that I replace the timing chain > in my '87 900s w/187,000 miles on odometer. This is being > proposed mainly as a preventive measure rather than to cure > a major problem. The chain is somewhat noisy. The job is > quoted at $300 for an in the car job. A broken chain would > entail pulling the engine at ?, possibly over $1000 > > Its a very well maintained car with a first rate black > finish. I'm aiming for 300K+ so try to keep on top of > things and follow the Saab maintenance schedule plus replace > things as they start to wear but before they break. > Questions: > 1.Anyone with experience with a broken timing chain in a > Saab engine. At what mileage? If so, is it a destructive > event to valves etc? > 2.Has anyone replaced a timing chain as a "preventative" > measure? At what mileage > 3.What are the signs/symptoms that indicate the timing chain > should be replaced. > 4.Anything in the line of advice. > > I see my tech as honest, giving good advice and conservative > in reccomendations for repair so I see no reason not to > trust him or the service manager. Each of this 4 or 5 > person independent shop has over 10 years experience in a > Saab dealership in a town with probably the highest Saab > registration per square block in the US. > > Ron Friesen > Loveland, CO --
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