View Full Version : How come cars RSX,S2000,RX-8 aren't high or = in torque
dsm4g63
09-06-2004, 05:16 PM
i have a question the cars i listed in the subject heading look good and everything but why can't these companines make the cars listed in the subject heading with more or equal torque are they using horsepower has a marketing tool?
How come american and european cars have high torque and not imports
I 4cyl and v-6 might be the case but really why?
Ford Capri 2.8i
09-06-2004, 05:33 PM
I dont understand very clearly the question but ill try to give the best explanation that i can about the torques ...power.....
the thing is that.......as long as the aspirated engine has more power(the only way to get more power with aspirated engines is getting the power in more revs), the engine will get less torque...or it will take it in higher revs, and many times in non useful revs such as 4800rpm.........(the supercharged engines case is a different story)
answering the question of your topic, if the high rev engined japanese cars (such as the VTEC engine and the Wankel one) have got some torque......of course that they have and the same amount of torque as a equivalent engine with the same power......the point its though that the S2000 and the Mazda have got in high revs such as 4800-5000...or even 5500....as a result........apart from prejudicing the reliability of the car(a car working in 5600revs must be more reliable than an engine which works in 6800 revs).....the owner of these cars have to be changing constantly the gear(the fuel consumption increases), once under these amount of revs, these engines dont have any power.......in addition...the arent able to tow a caravan or able to accelerate up a mountain road with four people on the car......
sameerrao
09-06-2004, 05:55 PM
Its been designed in ... typically big bore and short stroke engines rev a lot higher than short bore big stroke engines ... this is due to less reciprocating masses that are being moved during the 4 stroke cycle. Bore = cylinder diameter and stroke = piston length to put it crudely.
An F1 engine is the perfect example of the former with 900 some bhp and about 480 lb-ft of torque but at 18K rpms.
Therefore more the stroke more the torque and more the capacity displacement more the torque
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