Math help, 0 - 60 using whp/lbs.

As I reduce weight and add hp I'd like to get a * GENERAL IDEA, repeat * GENERAL IDEA for 0-60 times using whp/lbs. The motors are different but I have a little more torque, slightly lower gearing, lower rpm, etc. but it's all close enough. I can provide more specs if need be. Thanks!

*edited

I'm looking for the whp/lbs. that will produce 6.0, 5.5, and 5.0 seconds. These are my goals for my current motor and then the next motor (at least). The next motor will be approx. 240whp/2175lbs.- 9whp/lbs. I'm currently at 150whp/2325lbs. and will eventually be at 165whp/2175lbs.

JDM Type R stock, 2650 lbs. - 14.7whp/lb., 6.2 seconds 0-60

EDM Type R stock, 2650 lbs. - 15.8, 6.4 seconds

Mine now, 2325 lbs(was 2785)-15.5,? seconds

I can use the JDM and EDM weights and times (.9 lbs./.2 seconds)to guesstimate but imagine there's quite a bit more to it.

The limit for 0-60 times is going to transition from traction limited to power limited as the speed changes. The equation you need to work up will also include some data on the tire and car weights, as well as the actual power/torque curve and the gear ratios. I have done a bit of this and could point you in the right direction if you are interested in going thru the steps to get it accurate.

Steve

these 0-60 times too are arbitrary to whoever drove it at the time.

For rough estimation: 0-60mph ET = vehicle weight [kg] / (peak HP * 0.9)

HTH,

-- Pete

In reply to stafford1500:

You are indeed correct, some vehicles defy these calculations signifigantly, but at the end of the day, what Kanaric posted holds the most true. The rest is pretty much like the HP/liter pissing contest.