Date: Wed, 10 Oct 2007 17:21:39 +1300 From: Richard Sutherland-Smith <richard.ssnospamr.net.nz> Subject: Re: Timing Chain failure at 46k miles
> Richard Sutherland-Smith wrote: >> >>> Grumpy Mike (dalcassian301nospamom.net) gurgled happily, sounding much >>> like they were saying : >> >>>> About an hour later they called and said that the timing chain >>>> had broken. They said that unles I replaced a bunch of other parts, >>>> I'd be back to them again in 3 weeks. The quote was ’Ǩ1700 (’Ǩ700 >>>> parts, ’Ǩ700 labour, ’Ǩ300 VAT) because it required removal of the >>>> engine, taking off the head and sump, etc. >> >>> £700 parts sounds high. A complete OEM chain kit would be less than £200 >>> from a specialist supplier. >>> http://www.nospam.com/product_info.php?products_id=2671 >> >>> OTOH, that may well include other bits - it'd be daft not to put a new >>> clutch in whilst the engine's out the car. Various other parts are also >>> FAR easier to get at, so the cost of the part now is small compared to >>> the cost of repeating the labour later. >> >>>> My question is, if the car would run when revved up, how could the >>>> timing chain be broken? >> >>> "Broken" could well be being used as a non-technical euphemism for >>> "fooked" to cover a multitude of sins. It's quite possible that it's >>> stretched or the tensioner's broken, or it's in the throes of links >>> actually breaking but hasn't yet completely separated. >> >>>> And, if it does need replacement, does this require the removal of the >>>> engine, head, and sump? >> >>> The chain can be replaced in situ, but to replace the sprockets, guides >>> and tensioners does - I believe - require removal. >> >> I have done a 9000 Aero timing chain and balance shaft chain and >> guides from the side, by taking the wheel and liner out. > How long time did that take? AFAIK, timing chain replacement is a > labour intensive job, hence high garage prices. On the other hand, > the timing chain should last over 100k. I say "over" because there > is no particular replacement mileage, as there are for engines with > rubber band timing belts. Two of us took a gentle weekend, but he then did up the starter and alternator refurbished while we were in there. No real problems, just followed the SAAB manuals. -- Richard & Mary Sutherland-Smith 19 Webb Road, Wanganui 4500, NZ
