Date: Mon, 15 Nov 2004 20:28:36 +0100 From: Paul Brownjohn <Paul-no-spam-nospamnjohn.co.uk> Subject: Re: changing Timing chain and balance chain
Dexter J wrote: > Salutations: > > On Mon, 15 Nov 2004 00:34:28 +0100, Paul Brownjohn > <Paul-no-spam-nospamnjohn.co.uk> wrote: > >> Dave wrote: >> >>> My Mreg 1995 NG900 has done 140000. Recently the enging has developed >>> loud >>> rattle that quietens when warm. >>> I have been advised it could be timing and or balance shaft chains. >>> Do these >>> need the engine to be taken out to replace or can they be bone in car? >>> Thanks dave >>> >> A lot of people don't bother replacing the balance shaft chain >> system(where fitted) on 9000s at least. One of my 9000s snapped its >> chain(s) in 2001 and the garage rang me to ask if I wanted to bother >> with the balance shaft chain or should they just leave it off. I said >> leave it off and I can't say I really notce the difference except that >> the engine seems a lot more responsive than most 9000s I have driven. >> >> Any one know more about this one? >> >> Cheers >> >> Paul BJ > > > As you may have noted - I've taken an unhealthy interest in machine > chains over the years. I am thinking seriously about the same mod in the > coming year or so. My only concern I guess would be how it will impact > the lower engine mounts on an older HO engine. > > While the compression is strong, it is light about 10pds at number three > hole on a fresh gasket and that is probably the way it is going to stay > until I blow the engine or turbo. Thus, while I would dearly like to > lose the drivetrain weight, I am worried that the vibration will start > consumming the oil mounts *even faster* than on my last one. > > Did you go for the pucks or do you still have factory lower mounts and > are you 5 speed? Whats you engine like outside of the balance shaft mod? > > -- > > 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 Mine is a bit of an old banger so I left the old engine mounts in there. They did go...two years later after a LOT of miles....but they might well have been on their way out anyway! The engine is a standard 2.3 FPT from a 1991 5 speed 9000S. You imply that some sort of engine mounts other than Saab are preferable...is that right? Cheers Paul BJ
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