Date: Mon, 15 Nov 2004 20:29:25 GMT From: Dexter J <lamealameadingdongnospamlamelame.org> Subject: Re: changing Timing chain and balance chain
Salutations: On Mon, 15 Nov 2004 20:28:36 +0100, Paul Brownjohn <Paul-no-spam-nospamnjohn.co.uk> wrote: > Dexter J wrote: >> Salutations: >> 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? >> > 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 I'm trying to get a handle on the vibration factor once the balance chains are out of the loop. Factory or after market hydraulic mounts will naturally absorb any extra vibration, but I went through my last lower set pretty fast. It may have been a main seal leak at the time rather the vibration, but it never hurts to ask someone who has done the business. If you went solid mount (rubber pucks) on replacement did you notice any extra buzz without the balance chains? I think a plain rubber engine set, with a poly tranny, might well be exactly the way to go for longevity for me - but it kinda depends on what sort of harmonics it sets up around a 2.3l turbo car without a balance chain. Could be murder on electronics, hoses and seals over time. -- Radio Free Dexterdyne Top Tune o'be-do-da-day June Christy - It's Been A Long Long Time http://www.dexterdyne.org/888/104.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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