Not talking about dyno numbers.
The trap speed says 480 wheel horsepower.
Trap speeds are often
suggestive of horsepower, but not predictive.
Let's go back to what I said in the ZR-1 thread... on a turbocharged car, peak hp and peak torque on modern variable geometry turbo engines don't tell you nuthin' except where designers
capped either number to keep the engine/transmission from blowing up.
HP calculators based on ET and Trap Speed
assume a number of things:
1. equal traction for all cars
2. equal drivetrain losses for all cars
What they
ignore is:
1. drag, or lack of
2. shape of the powerband (they assume a linear curve like you would have with a classic, carburated car with no variable valve timing, variable turbocharging, any kind of turbocharging... actually and computerized variable ignition timing and fueling... not a peaky VTEC-like curve nor a fat turbocharged one... this goes back to the argument I posted on the ZR-1 page about "power under the curve")
3.
torque (same banana as #2)
4. The difference of FWD, RWD and AWD
5. The effects of close-ratio or long-ratio gearing
I've got two
other HP/ET calculators that tell me the GT-R should get either 11.7 or 12.3 seconds for its given bhp. And that it should be trapping at 116 or more for 480
whp. In fact, no two calculators agree, since the basic assumptions each use are different.
So... which?
Like I posted 1,000,000,000 pages ago... they put the GT-R on the Mustang Dyno... finally... and the Mustang Dyno is the American benchmark for actual whp, and it read just over 400 whp. That's it. End of story. Please, dear Lord, let it end.
...but the Murcie is surprisingly strong and wieldy for such a big car, itself.
