bigger engine displacement doesn't mean bigger horsepower. Explanations please, thank you in advance.?

Answer 1

Also don't forget about compression. Without good compression displacement wont matter. Also like the other guy said the right air fuel mixture is important. An engine is like a big air pump. More air in more are out so long as all the mixtures and timing are in good time for the new displacement. Don't forget that displacement may have increased the torque and you haven't noticed because you have been looking at HP numbers. Torque does the work for the getting up and going.

Answer 2

I'll just put it to you this way there is no "free lunch". To make horsepower without displacement a car has to have something special to do it. Horsepower is basically defined as work done over time. A car with a 3.0 v-10 engine that runs off of high octane gas and has a supercharger with an intercooler will have more horsepower than a stock 5.7 chevy v-8...But will also get about 7 miles to the gallon. The reason this is because it can burn more fuel in a shorter amount of time....And that's what it all basically amounts to...also the amount of torque, plays a factor in horsepower because it is a factor of the amount of work....force and distance...work......time...well time......Make sense?

Answer 3

Based on what? All other things being equal, a large displacement engine will generate more HP than a smaller engine. A 6 cylinder with the same bore and stroke will not generate the HP of an 8 cylinder engine with the same fuel, bore and stroke.

Answer 4

The biggest factor is that HP IS A FUNCTION OF TORQUE!

HP is power applied over time! Its not really the "power" people think of.
If you want brute force, thats Torque!

Diesels for example put out huge amounts of torque, but they're unable to do it quickly, so their HP numbers are deceptively low.

For example, a detroit diesel 12L puts out only around 350HP!!
But, it puts out 1500 ft/lb of stump pulling torque!

So one perspective is that bigger engines cannor rev faster.

There of course there is combustion efficiency and an array of other variables that go into it.

While its not always true, Bigger is most definitely better in general terms.

Answer 5

Efficiency of combustion is what matters. A smaller bore burning 90% of the fuel injected is more powerful than a big block at 75% burn. In layman's terms!