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WF16 Champion and Argumentative Wanker
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I have owned a S/C V6 and it doesn't stack up to a V8 S4 very well. It does OK, that's it, OK. My dad's S4 ran a 13.1 in the quarter mile...granted it's modified a little bit, but only chip, exhaust, intake and short shifter. The V6 S/C stands no chance for that time.
 

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Lefties have rights, too!
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15,697 Posts
If that was true why would car companies make V-8s, V-10s, and V-12s? If you can afford it lager is always better.


Sure there is, Tom -- boost, and lots of it.

If some is good, more is better and too much is just about right!

Check out this v6
 

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I like a good lager, as well as an occasional stout ;-). If everything else is the same, a bigger engine will make more power than a smaller one. Eventually, however, the rules under which you run dictate the optimum. For street driven cars, V8 engines are popular because they are compact and are naturally balanced, v6's also for the same reason, but they aren't balanced as well so you cannot get the displacement out of them as easily. For street driven cars, when you put in more cylinders, you get more valve area per unit displacement but you get more friction too, so your fuel economy suffers.

Four cylinder engines are pretty good for fuel economy but again balance is an issue so you can't make them big enough to make sufficient power. So there are compromises in anything. Formula 1 has mostly 10 cylinder engines now, to compromise between fuel economy and (naturally aspirated) power. For a while four cylinder engines were dominating, it depends on the rules. The v6 in the above link has an advantage for the class in which it runs -- it is very compact, makes over 1600 horsepower and can be set back further than a v8, making the car leave really, really hard. The typical 60 foot times are in the 1.1x range, leaving at 15 to 18 psi and running peak boost of about 35 to 38 psi. Anything more than 20 psi and you blow the tires off. But v8's are faster in the class (BB/AT in comp eliminator) because they breath better. However it is not a matter of affording it with this car, it was the class rules that dictated the choice in drivetrain.

One observation, though -- if power is really what you're after, you start compound turbocharging so that you can run increasingly higher boost. Eventually you figure out that the thing with the valves and the pistons is causing the restriction, so you put in a burner. What you wind up with then is a gas turbine, which operates at much higher pressures and temperatures than an IC engine (hundreds of degrees above the melting point of the material, actually), but you'll burn about 40% more fuel. Gas turbines make huge power for their size, as do the rocket motors on the space shuttle, but they burn a lot of fuel.
 
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