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Date: Wed, 04 Sep 2002 19:51:26 -0300
From: J Dexter <webmannnopsamdress.org>
Subject: Aircraft Parts and Turbo Sputter


Salutations: Actually, throughout the 80's series SAAB's - the aircraft partnership turned up in several meaningful ways.. First, there were a pile of aircraft grade fasteners (plastic, aluminum and carbon steel) throughout the 80's 900 series. Also, as mentioned elsewhere, they pretty much invented the -reliable- automotive turbo.. I know, all of us who suffered through the many burned out turbo's of the 80's are pounding out replays even now - but I have strayed from SAAB's over my lifetime and while a lot of other machines had turbo's (interestingly - Buick/Olds had a water injected job in the early 60's 400 V8 JetFire) - none have ever worked as well as SAAB turbo power. There is a whole pile of aircraft grade wiring, switches, fixtures and motors buried in surprising parts of your pre GM 900 or 9000 SAAB - those really great back seat reading lights (the ones that don't reflect on the windscreen) in the 9000 are directly out of private aircraft industry. While this had to have been more an economy of scale thing than any clear decision on the part of the SAAB purchasing group - it is still nice to have on board.. Finally, if you ever have occasion to let your SAAB run out a bit - say in the 130k-150k range - you've been pleasantly surprised at how much having a wing designer somewhere in a given company can do for handing and ride comfort at high speed. Interestingly, I gather the basic A and B series blocks that dragged the SAAB to 4 stroke were a Triumph design and can share most of it's internals with a Triumph V8 Stag engine. That said, I have often wondered what would have happened if SAAB added turbo and further developed the 2 stroke engine.. I once ran a 750CC Kawasaki 2 stroke triple and while the powerband was tight (about 400 rpm one way or the other of 7000 rpm) the addition of a turbo charger and an advanced engine management system should have fixed most of that (in the SAAB at least).. As I've kinda proved locally, the real trick to sassy old SAAB's is that virtually no one (here at least) ever treats their machine to anything beyond the official scheduled maintenance and most often - not even that.. This has worked out for me however. I've usually been able to find a real 'lemon' for next to no dough that mostly only really requires a proper maintenance round and a sound contact cleaning to make another 100,000k. This 9000 is my first adventure into the post 900 world however and there are some puzzling issues I must admit.. This turbo sputter is most confusing.. Basically - it seems good throughout the RPM band and only kicks up when I bring the turbo up to about the end of the yellow range suddenly - usually after stepping on it and dropping into a lower gear.. If I carefully control the throttle so that I stay in the turbo midrange (like mid-yellow) - I apparently have all the boost I want right up to 200kph (I ran it down the local fourlane early one morning when no one was on the road).. I do not think the turbo itself is bad and replaced the fuel pump with a donor from a local SAAB grave yard and it had no effect whatever.. That said, when I first bought it - it was doing much the same thing and I fixed it (albeit temporarily) by replacing the ignition wires.. Anyway, all experiences and advise would be appreciated.. your pal J dexter http://www.dexterdyne.com/ All tunes, no ads, no news, no weather, no phone in, All the Time..

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