Since everyone is wrong, Apparently I missed something. The 1JZ is a 2.5L motor and the 2JZ is a 3.0L. How do the "cubic inches stay the same" yet have different displacements? Head design has nothing to do with the ability to rev. Reciprocating mass and the bore/stoke ratio has to do with the ability to rev, not head design.
Your last statement also doesn't make sense. Torque is primarily a function of the bore/stroke ratio not head design, even though on an N/A car the intake design does matter to a certain degree.
Here are some facts.
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Displacement, cc 2491
Engine model 1JZ-GTE
Max.power (Net), kw(PS)/rpm 280 ps (205.94 kw) / 6200 rpm
Max.torque(Net), N*m(kg*m)/rpm 37.0 kg*m (362.85 N*m) / 4800 rpm
Power density 5.43
Engine type Serial 6 cylinder DOHC24 valve IC twin turbo
Engine information
Fuel system EFI (electronic fuel injection)
Turbocharger Twin Turbo with intercooler
Fuel type Unleaded premium gasoline
LEV system (Low emission vehicle) No
Compression ratio 8.5
Bore, mm 86
Stroke, mm 71.5
Final gear ratio
Fuel consumption at 10-15 modes, l/100km 12
Fuel consumption at 60 km/h, l/100km 5.9
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Displacement, cc 2997
Engine model 2JZ-GTE
Max.power (Net), kw(PS)/rpm 280 ps (205.94 kw) / 5600 rpm
Max.torque(Net), N*m(kg*m)/rpm 46.0 kg*m (451.11 N*m) / 3600 rpm
Power density 5.32
Engine type Serial 6 cylinder DOHC24 valve IC twin turbo
Engine information VVT-i two-way twin turbo
Fuel system EFI (electronic fuel injection)
Turbocharger Twin Turbo with intercooler
Fuel type Unleaded premium gasoline
LEV system (Low emission vehicle) No
Compression ratio 8.5
Bore, mm 86
Stroke, mm 86
Final gear ratio
Fuel consumption at 10-15 modes, l/100km 11.1
Fuel consumption at 60 km/h, l/100km
Please help me understand your statements because on the surface they make no sense what so ever.
Mike
P.S. The I have one so I know arguement won't fly.
P.P.S. Here is a good article on bore/stroke affects the character of the motor.
http://www.fordmuscle.com/archives/2003/09...ker/index.shtml