Does anyone know how to figure it up? I remember it something times something.
It's just what the name implies......power to weight or power divided by weight.
If your Saturn weighes (as URtalking2CRASH posted) 2437 pounds and yoru engine is producing 124 horsepower, then the equation is 2437/124, which is about 19.65 pounds per horsepower (not that great, but not bad considering the nature of our Saturns....."econo-boxes").
Add a turbo and get 200 horses and that figure drops to 12.185 pounds per horsepower!!
2437 pounds divided by 124 horse power equals one horse power per 19.65 pounds. Power to weight ratio. Used for what ever you want to. Compare to other cars. I prefer horse power per cubic inch myself. In the era of the muscle cars if you had one horse per cube then you had a pretty dam good car. A stock Chevy 350 with 350 HP that would be something. If you had more then you really had something. Crunch the numbers for Saturns or most any modern car.
I guess you can figure it either way......power divided by weight or weight divided by power.
If you do it the way Emily did (124 HP/2437 lbs., then you get a ratio that is .051 horsepower per pound.......the other way (2437 lbs./124 HP) gives you pounds per horsepower, which is how I have always measured it and seen it calcultaed.
I like knowing how many pounds each of my horses needs to push, not how many horses moves each pound, but to each his (or her!) own.
2437 pounds divided by 124 horse power equals one horse power per 19.65 pounds. Power to weight ratio. Used for what ever you want to. Compare to other cars. I prefer horse power per cubic inch myself. In the era of the muscle cars if you had one horse per cube then you had a pretty dam good car. A stock Chevy 350 with 350 HP that would be something. If you had more then you really had something. Crunch the numbers for Saturns or most any modern car.
This is true......a 1.9 Saturn engine is about 1/3 the displacement of a 350 Chevy, so it's about 117 cubes.
124 HP/117 ci = 1.06 HP per cube.......I guess we should brag about that fact to the "old school" hot rodders!? (maybe not!)
Power to weight ratio? 
2437 pounds divided by 124 horse power equals one horse power per 19.65 pounds. Power to weight ratio. Used for what ever you want to. Compare to other cars. I prefer horse power per cubic inch myself. In the era of the muscle cars if you had one horse per cube then you had a pretty dam good car. A stock Chevy 350 with 350 HP that would be something. If you had more then you really had something. Crunch the numbers for Saturns or most any modern car. 
Linear Mode
