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Re: Timing Chain Replacement Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Wed, 24 Jan 2001 08:20:17 In Reply to: Timing Chain Replacement, MA Younts, Tue, 23 Jan 2001 20:57:54 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Yes, "rolling in" is a Saab-certified method to replace the timing chain, and they sell a kit to do it. It is a perfectly good way to replace just the timing chain. The valve cover is removed, and a link removed from the old chain, and the new chain connected to it. The engine is then carefully turned, and the old chain 'rolls out' as the new chain 'rolls in'. Once the new chain is fully in, the old chain is removed, and the new chain linked together.
It's MUCH cheaper than removing the timing cover to access the chain, because you don't have to remove all the accessories.
That's the good news. The bad news is that replacing the chain is only part of the job. It all depends on why the chain was replaced. If the chain was stretched or damaged, it's reasonable to replace just the chain. But if the chain were worn, it's pretty safe to assume that all the other running components - sprockets, and especially chain guides - are also worn. Not replacing them is only half the job. And replacing them requires removing the timing chain cover.
You don't mention what car you have - the 2.3l has a reputation for chewing up balance shaft sprockets. If you have a 2.3, and you need the timing chain replaced, it makes sense to do the balance shafts at the same time.
As the others have asked, why was the timing chain replaced? What diagnostic tests did the dealer do to determine the problem was the timing chain? What were the symptoms that brought you to the dealer?
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