i read something on honda tech saying the more displacement you have the less hp/liter youll get. is this true? and why?
Those guys are idiots.it was on that 400hp race motor thread. some one replied and another person confirmed it. i was thinkin its the opposite.
Bore doesnt really effect hp/L that much I think. Increase the bore and your trq/L remains fairly constant but since horsepower is torque @ high revs and a longer stroke moves the torque curve down, all things being equal, you can conclude that increasing stroke decreases the ratio of HP/L. In motorsports which engines have the highest HP/L? I would say F1 and MotorGP, its not a coincidence that a 2.4L V8 modern F1 motor has a 39mm stroke.That doesn't work though, if the stroke goes up so can the bore and you will have the same hp/liter. It is a proportion.
When you go bigger, the parts are heavier. In an all motor engine, the heavier the part, the less efficient. To make a large, light part, it costs a lot of money.so why is it when you increase the stroke, your hp/L drops?
I am going to tell you right now there is not a single thing you can learn from an 8000hp funny/top fuel car that will be applicable to any road going motor.I would like to look at the ports on an 8000HP funny car...
of course their are a lot of factors that come into place