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Date: Sun, 14 Nov 2004 17:51:57 GMT
From: Dexter J <lamealameadingdongnospamlamelame.org>
Subject: Re: changing Timing chain and balance chain


Salutations: On Sun, 14 Nov 2004 06:08:46 +0000 (UTC), Craig's C900 Site <c900nospam.apana.org.au> wrote: > On the subject of timing chains, I have finally obtained a new timing > chain > (with master link) and a new timing chain tensioner kit (the newer type) > to > keep in spares for when I need to replace the timing chain in the 8V B201 > engine in my 1982/83 900S. The engine car has done almost 250 k km's so > it's > definitely in the ballpark range for timing chain problems to become > evident, though at the moment (without getting the car over to a proper > Saab > service dealer) I don't think there are any high-demand problems with the > timing chain, etc. > > Has anyone done an engine-in-place replacement of the timing chain and/or > chain tensioner in an 8V 900? Was there anything good or bad that you > remember about doing it? I've seen a few references on the web about the > process but have not spoken to anyone who's actually done it. > > I agree with most people that lifting the engine out just to do a timing > chain is probably a very expensive option unless it's also used to do > other > things which can't really be done when the engine is in the car. However, > when facilities to life an engine are not available locally without > taking > the car to a Saab service agent (and paying for the labour more than > anything else to get the job done), is there anything special to watch > out > for? > > Regards, > > Craig. You know, I cannot remember ever having to do the timing chain and guides in my old 900 engine right out to about 900,000km.. But it may have been an earlier A model block, I had the pump pressed in the block. The chain got a little loose towards the end, and it was natively 'Jet Sounding' to begin with - but it was the reversing 5 ton in the parking lot that finally did her in. Assuming you have you checked your pumps and alternator carefully - I would be just looking at the main tensioner spring before going to deep in myself. I did have to do that around 300,000km. All that said - given you are 8v, a skilled hand should be able to thread the chain in most normal instances. There shouldn't be a secondary balance chain in this engine, so it is rational to try it before lifting the engine out. Butter fingers will get expensive quickly though. -- Radio Free Dexterdyne Top Tune o'be-do-da-day Margret/Hirt - Baby Its Cold Outside http://www.dexterdyne.org/888/099.RAM all tunes - no cookies no subscription no weather no ads no news no phone in - RealAudio 8+ Required - all the Time

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