Quote:
Originally Posted by madfast
ok if you do the math, this thing is making 150 ft lbs at 7000 rpm. incredible. if allowed to rev to 9000 rpm, im guessing this thing can make S2000 power.
also this car is 200 lbs lighter than the RSX-S, 11 ft lbs more at 6600 rpm and 10 ft lbs more at 7000. it makes about the same hp 800 rpm sooner.
i think there is still a LOT left on the table. the tq is holding flat close to redline. for fuel econ and reliability reasons, they probably set the redline at 7400...
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It doesn't work that way. Torque and power will be DROPPING after their peak, you rev it to 9k and assumng the valvetrain can handle that it'll probably produce 100ft lbs and 150hp or so up there.
While the torque hasn't dropped much by 7000 (400 rpm later) it obviously starts dropping nicely after that point. For it to even make close to the peak torque at 7400 it would be producing 213hp @ 7400. If we assume it just drops 1 HP at 7400 the torque is already down to 141ftlbs at 7400. Most likely it drops a decent amount more than that, let's just say 5hp, and you are already down to 138ftlbs 400RPM after peak HP and only 800RPM past peak torque.
You rev that stock motor with stock cams and valvetrain to 9000 (again assuming you don't get valve float and piston to valve contact) and you won't be making any sort of usable power.
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-Dave
Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback
DD: 2005 Acura TSX
Tow: 2022 F-450
Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4
Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX
Projects: 2013 Subaru BRZ Limited track car build
FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles