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Date: Wed, 02 Oct 2002 21:39:44 +0100
From: Johannes H Andersen <johsnopsamanytime.co.uk>
Subject: Re: Saab V8


Dave Finnegan wrote: > 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 > > 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. In fact the opposite because the turbo provides early torque. That is the key to turbo enjoyment. However, a 4.3L V8 would probably have more than enough torque at low rpm. > > 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. Quite true, but not a problem if you get used to the engine in hand. My 150 bhp LPT engine responds instantly to input. > 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. The alu V8 shouldn't be much heavier; if it was, then it would spoil the handling of the car. One would certainly expect the V8 to be smoother, but at a cost in efficiency. The V8 will inevitable have higher emission levels, higher CO2 taxes. IMO a backward step, but probably necessary to satisfy the luxury end of the market where the V8 is quite common. Hence I don't think the lazy V8 will replace the fire breathing turbos, they will probably co-exists for different markets. Quite funny that not many years ago Saab explored small capacity engines. The SVC research engines started out at 1.4L but became a super efficient 1.6L 225 bhp engine. Wonder what will now happen to that engine. > 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. I suppose that is because you are used to automatics, with a manual box you just change down a gear or two. Johannes

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