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Literally all cars are now governed electronically to a certain speed limit. 110 or 115. Not going to go faster.
My estimate of the top speed of a 3,000-lb. car, with good streamlining, typical gearing and 200 H.P., would be just about that same level, of 110 to 115 mph. I assume there is some business in hacking cars, to remove the governor feature.
My estimate of the top speed of a 3,000-lb. car, with good streamlining, typical gearing and 200 H.P., would be just about that same level, of 110 to 115 mph. I assume there is some business in hacking cars, to remove the governor feature.
I would suggest that is a little underestimated. I have Lacrosse and it has 200HP, 3500 pounds. At about 85 or 90 it shifts into third and there is a lot of acceleration left at that point. Cruising along at 90 or 95 there is plenty of power left if you need it.
Literally all cars are now governed electronically to a certain speed limit. 110 or 115. Not going to go faster.
Today, BMW, Audi, Volkswagen and Mercedes-Benz limit their production cars to 250 kilometres per hour (155 mph). Certain Quattro GmbH and AMG cars, and the Mercedes/McLaren SLR is an exception.
Which is it, literally or figuratively?
Cause you say literally, but the second sentence of your snip says that Audi and MB don't on every car.
Some cars are drag limited. Some are gearing limited. Some are electronically limited.
The equation for top speed is v=(2P/(c * D * A))^(1/3)
v = velocity (m/s)
P = power (W)
D = Air density (kg/m^3)
A = frontal area (m^2)
c = drag
or
F = 1/2 (c *A * D * v^2)
OP:
should be about 3+ seconds faster quarter
should be a variable amount faster on a track
should be about 2 seconds faster to 60mph/62mph/100kph
speed , as in how many MPH you can go, does not depend fully on displacement. Weight, gear ratio, suspension, and tires have more to do with it. I drove a Geo Metro, with the 1.3l engine, reached a scary 110 mph. Drove a Mustabg GT , 110 mph, still sort of scary. I also drove a tuned Miata with wide rims and updated suspension, 118 mph and still felt safe (maybe it was the roll bar).
As for 1/4 mile times, a strong engine, with sticky tires, and great reaction time gets you there quick.
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Quote:
Originally Posted by kapikap
speed , as in how many MPH you can go, does not depend fully on displacement. Weight, gear ratio, suspension, and tires have more to do with it. I drove a Geo Metro, with the 1.3l engine, reached a scary 110 mph. Drove a Mustabg GT , 110 mph, still sort of scary. I also drove a tuned Miata with wide rims and updated suspension, 118 mph and still felt safe (maybe it was the roll bar).
As for 1/4 mile times, a strong engine, with sticky tires, and great reaction time gets you there quick.
Weight has nothing to do with top speed, only how long it takes to get there. Top speed's a function of HP and aerodynamic drag and a gear ratio that let's the engine achieve max RPM.
I don't drive fast these days, but I had '86 and '88 Saab 9000 Turbos that weighed right at 3000 pounds. Both developed 175 hp and would do 140 mph... very comfortably, I might add. These were clean cars for the era, but that's still 30 year old technology, so I'd guess that, with similar gearing and slightly improved aerodynamics, 200 hp should be enough for 150 mph.
Those were extremely nice cars, btw. That's why I replaced my '86 with a duplicate in '88 and why I kept the '88 for 12 years/180K miles.
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