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MEP is found from:
BHP/(rpm*displ)
rpm is in krpm (rpm/1000)
displ is in liters
MEP is a better way to compare the efficiency of different motors because it takes into account the rpms the motor is turning at peak HP. Its important to take rpm into consideration because greater rpm is an easy to create more power (assuming that some amount of torque can be produced).
Here are the results
car-------------disp (cc)----bhp----rpm at peak HP----MEP
300zx----------2960-------222----6400--------------11.72
Supra----------2997-------220-----6000-------------12.23
3000GT SL---2972--------222-----6000-------------12.45
SVX------------3317-------230-----5400--------------12.84
When taking into acct rpm, the SVX motor takes the win in efficiency.
It would be interesting to see what the SVX motor would crank out with longer duration cams, higher lift, and appropriately tuned intake and exhaust. If the MEP of 12.84 could be maintained but peak HP moved to 6500 rpm, the motor would be cranking out 275 HP.
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Mychailo
:: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ ::
1995 Laguna Blue SVX L AWD 5MT (sold)
Visit my locker
SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads.
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