Quote (Monster666 @ Dec 23 2009 06:25pm)
because v8s are about torque and not hp
horsepower is a made up number derived from a formula where torque is real force
saying you are squeezing 100hp per liter of of an engine at a certain application isn't really saying much at all its just something to put on a brochure cuz people think its special
i4 engines are all about having a really steep power band and hitting hard at a certain application IE: at a certain rpm
v8 engines have very similar torque all the way through the rpm range instead of being gutless at the top and at the bottom
srry but u are wrong on many lvls.
not all V8's are about torque, american V8's are. and the C6R race engine still makes plenty of torque.
the hp per liter rating or more technically called specific displacment is a very omportant mesurment in the auto industry. it is a key indicator as to the engines state of tune.
any and all engines can be designed to have the same kind of powerband. its all about the engines state of tune compression ratio and im sure u can imagine may other factors. take the KA25DE from the 240sx. it is a 4 banger it makes like 155 hp but wait it makes 160 ft lbs of tourque. any engine can be designed to have any kinda powerband u want.
i understand torque and its relationship to hp, torque is very important for say drag racing or other forms of motorsports where u are not 1000 rpm from redline all the time. engines with a high specific displacement say over 100hp per liter are designed to be more track inspired. a big factor on being fast on a track is being able to reliable put HP to the ground at high rpms. if your torque and hp powerbands overlap and are very close rpms wise then u will have trouble putting power down at high rpms where race engines always are.
the fastest race cars generally make very little torque and very high amounts of hp so that they can get that hp to the ground at high rpms more efficiently. F1 engines for example are like 3.0 liter v8's that make 700+ hp and like 300 ft lbs. they design them like this because of the reason i just descried about traction at high rpms.
the high performance honda and ferrari engines are of the same basic type of design are more intended to be used on a race track not a drag strip. they are 2 very diff worlds where 2 very diff kids of cars and engines are used.