Thursday, August 19, 2010

What is your opinion?bmw M always make the best engines without turbo and small displacement.unlike AMG.?

AMG always tries to make powerful engines with either big displacement(even 1 to 2liter more than M POWER) or turbocharger,but most of the time BMW engines are very near AMG engines with bigger displacement or turbos and if the displacement of both M and AMG is the same always M is more powerful, but fewer people pay attention to this.For example E63 has a 6.2 liter engine which is 1.2 liter bigger than M5 engine but it has only 7 more hps than M5.514 vs 507.it is not fair to compare these two cars with these rather huge difference in engine liter although i know that even with smaller engines M can has the same or even better performance than AMG and this shows that M engines are more advanced and has more technology than AMG.I hate turbo or big engines. i like normally aspirated engines with moderate displacement and high hp and torque because that proves the ability of the car maker to achieve high numbers without turbo or big engines like BMW or FERRARI.

What is your opinion?bmw M always make the best engines without turbo and small displacement.unlike AMG.?
I have a question for you:


Why is using a turbo or large engine cheating?





The chevrolet SEVEN LITER 500 hp v8 (with torque of ungodly levels), is about the same size and weight as the 240HP, torqueless honda s2000 motor. If the engine is the same size, same weight, but makes 4 times the effective power, why is it in some way worse? If anything, hondas STUPID for not using a similar, more powerful motor.





Or look at the new 997 GT2. Its 3.6L turbocharged motor makes MORE POWER and WAY, WAY more torque than the M5 motor, or any ferrari motor in production. And its smaller. I dont get how in some way thats cheating. Its called being smart.





Horsepower per liter is only a relevent measurement when youve got rules on engine size (ie in racing like formula 1). Real world cars DO NOT. The REAL measure should be either area-under-the-torque-curve per pound (or physical size, if this is more pertinent). Large displacement motors (and turboed motors) dont have to be physically large or heavy. They also tend to be more reliable, and have a better power band.








and PLEASE PLEASE PLEASE go read about all of the technology that goes into the new 997 GT2s turbocharged engine. It is one of the most technologically advanced motors in the world. Variable vein turbo geometry, expansion intake manifold (revolutionary), variable length intake system, variocam plus, and more.





basically ill sum it up like this: If you have a 5 liter engine that weighs 500 pounds and makes 500 hp and 500 lb-ft or torque, and a 2 liter engine that weighs 500 pounds and makes 400 hp and 250 lb-ft of torque, why is the 2 liter engine better?? If anything, I would think the 2L motor is BAD technology. They could have had a much simpler, more reliable, most likely cheaper to make, larger displacement motor with more potential that does everything it does, but better.
Reply:The 'M' series cars have been traditionally built by BMW for competitive driving, including race course performance. They take the standard engine (whatever capacity) and modify and tune it to such an extent that it achieves the optimum power for that displacement and capacity. Their philosophy includes raising the compression ratio to the maximum possible, the best valve timing, raising the red line on RPM, excellent fuel delivery and scavenging of the exhaust gases coupled with micro chip technology to extract the best performance with all the above modifications. In short, they have modified a standard stock engine to out perform its equivalent units which have not undergone the 'M' treatment. The Germans are good at technology and the 'M' series of BMWs prove this point.


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