awesome, i'd be so upset if i were the F12 owner lol

 

Interesting. Well that makes sense otherwise I was starting to think that I was making 800 HP
My only thought was that it was really hot - like 90deg F when we raced - and while we ran at a low elevation location, the density altitude might have been 2,000+ feet and so even on race gas, the F12 wasn't making the full 730 HP. Our cars, on the other hand aren't affected as much by changes in DA. So I'm making a full 750, he's down to maybe 700 and there you go.

There was no 650S unfortunately. Would have been a lot closer I think.

 

Nice kill bro. My dad just got his f12 a week or two ago. I sent him the vid to mess with him because we are always in competition on something

I would have expected the f12 to reel you in a little up top but I guess not

 

No doubt you'd take him especially given the torque tuned 997.2 Turbos are capable of. That's what gives you that instant jump. AWD doesn't hurt either Nice run!

 

Damn you shouldn't have sent him the vid but instead challenged him to a race with some money on the line or better yet winner gets to drive the others' car for a weekend.

Thx. Off the line would be no contest due to torque+traction but this race was purely horsepower vs horsepower since we both went from top of 2nd gear. With equal weight, similar crank HP (both were on MS109) and similar transmissions I figured it should be close. Either I'm making a lot more than 750 crank or he's making a lot less than 731 crank.

 

Don't forget you're also spraying meth and he's heatsoaking and torque is always there whether you're launching or rolling, post shift you're landing right back into your peak torque area and pushing the mass of your car forward with it. They make their power at peak rpm and when racing its all about the area under the curve which your car has considerably more of given its midrange torque

 

It was hot that day so yeah the meth (and also the Champion intercoolers) helped keep IAT's down for me. The Ferrari was running race gas but no meth.

But this theory about HP under the curve....not so sure. My ESS 650 M3 makes no torque - 350 at 8,600 RPM. And I raced cars like upgraded turbo 911's who made the same peak HP and obviously waaayyyyy more torque. In fact one such car was KenRomero on this board. We ran each other all the time and there were races where we were dead even the whole race. Ken had and upgraded 6AT trans that shifted fast so nothing was lost on the shift. And I would race built motor vettes and blown mustangs and upgraded turbo 335's all these cars making substantially more torque yet I could beat them despite the torque disadvantage and similar peak HP.

 

Right, but area under the curve means nothing without gearing. This is why your S65 M3 is/was quick, wide RPM range, shorter gearing. If you'd like to read up more on it see what you can dig up on torque multiplication. Motor makes X hp at any given RPM. That means nothing when it comes to how well it works out on the road unless you combine that with gearing. If you make the gearing taller (longer) you're effectively reducing torque as you're multiplying the torque coming off the motor down to the ground and same goes the other way.

This is why the most typical and easy thing to look into on NA cars is to see if you can go with a bit of a shorter gearing on the diff side as torque is relatively low and you can sacrifice top speed for more higher torque multiplication to the ground. You can do a similar thing with gears in the gearbox although this ends up usually very expensive as you have to build custom gearsets. Gearing changes nothing about your horsepower if you were to measure it on a dyno obviously as HP = TQ * RPM / 5252 but it means everything when it comes to how much torque is applied to the ground (torque multiplication) and how quick that makes the car feel (e.g. 1st gear always feels stronger than 2nd or 3rd but the car is making relatively the same hp for a given RPM range).

Dzenno@PTF