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Date: Wed, 02 Oct 2002 16:28:10 -0400
From: Dave Finnegan <dfinnegannopsamhronicity.com>
Subject: Re: Saab V8


Good points. I'd be interested in hearing a bit more about weight distribution and vehicle dynamics as relate to engine type and possition. Though, I can't dismiss the value of engine braking as easily as you seem to. I quite like lifting my foot a bit off the accelerator and not having to "reach" for the brake while in traffic. That bit of braking from the engine makes traffic easier to take. Also, reaching for the brake and back to the accelerator is not the smoothest way to drive through a nice stretch of winding road. A bit of heal-n-toe work would suffice, only, the 9-5 doesn't seem well setup for accessing the brake and accelerator simultaneously. Has anyone else found this to be a problem? Can the pedals be adjusted to place them closer to the same height when the brake begins gripping? I would have thought the higher performance of this car would have justified a better pedal setup; no? Dave KeithG wrote: > I know you didn't ask me, but I was interested... Interesting that they > said that the all alu V8 is 'little heavier' than the Iron Block I4, but > what about the all aluminum 4 in the NG9^3 and soon to be in the 9^5. It > has to be quite a bit heavier than that. I feel that engine braking is a > red herring. Why do you need it? That is what brakes are for. To me, a > turbo allows the synthesis of a great, useful engine. It has smaller > displacement and weight for fuel consumption, gross emissions and > handling considerations AND the torque and high horsepower possibility > for sportier vehicles and for passing and evasive maneuvers in more mid > range vehicles. To me, it is the best of all worlds. I do know that the > all aluminum v8 in my '62 skylark is lighter than many cast iron block 4 > cyl engines as well, but the development is going for the new GM Global > 4 all aluminum 4 cylinder engines and any comparison should be to that I > would think... Besides, do you want to try to work in that engine bay? > Transverse mounted Vee engines are always a bad idea for maintenance > issues as well as weight distribution/vehicle dynamics issues. > > KeithG > > Dave Finnegan wrote: > >> Why do you like turbos better than normally aspirated engines? Just >> curious. >> >> I would think that given a 250 Hp turbo engine and a 250 Hp normally >> aspirated engine, in the same car, that the normally aspirated engine >> would "perform" better. >> >> By that I mean the NA engine would not suffer from turbo lag; albeit >> slight, or not so slight as some have suggested. Also, I would expect >> the NA engine to provide greater engine breaking. >> >> I certainly appreciate the improved gas mileage of a turbo. And, I >> expect the NA would be heavier and thus reduce performance to some >> degree. >> >> Don't get me wrong, I thoroughly enjoy driving the Saab turbo. I find >> it to be very smooth and haven't been bothered by the turbo lag to any >> great extent. I have felt it on occassion. As when "poking" it to >> dart through traffic when approaching a left hand turn at a light. >> Other than that, I generally accellerate more smoothly when passing, >> etc, and have not felt at all hindered by any lag. Though, I think >> the lag in my car (2002 9-5 Aero) is less than others on the list have >> suggested. I do, however, wish I had greater engine breaking >> ability. Even at high RPMs in low gears the breaking is just not what >> I would expect. >> >> Dave >> >> JTK wrote: >> >>> I have also read about it, sometime this summer/fall. It was still in >>> early >>> development and they had to have the ACC set to max temp, as >>> otherwise the >>> engine would have overheated in minutes. But never the less, I like >>> turbos >>> more ;-) >>> >>> JK >>> >>> "Johannes H Andersen" <johsnopsamanytime.co.uk> wrote in message >>> news:3D9A7457.EE27B7E3nopsamanytime.co.uk... >>> >>>> Yep, just read about a 9-5 with a transverse 4.3L V8, 300bhp 400Nm. >>>> There >>>> is a picture at engine under the bonnet, looks like there's little room >>>> left over for - you know what I'm thinking about. However, the article >>>> claims that the alu V8 weighs little more that the four. Says the >>>> engine >>>> will first appear in a Vauxhall Signum. This suggests that the >>>> engine will >>>> not be very unique for Saab. Hmmm, don't know what to say. But in the >>>> context of the field of BMWs, Audi, Mercs, it is perhaps not >>>> surprising. >>>> >>>> Johannes >>> >>> >>> >>> >>> >> >> > -- Dave Finnegan davenopsamnegan.com

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