M3 Concept at Geneva (Update - Official Specs pg. 8)
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Lexus Test Driver
Joined: Jan 2004
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From: SF
A 98-05 1uzfe makes more peak torque than the new M3's engine. But then again, the M3 probably has a redline of at least 8500rpm. Short stroke and long bore will give you less torque, but more higher end hp (compare to a long stroke, short bore. Which only means BMW must have made the gearing short
. It's not too often you see a 4.0L V8 rev up to 8500 rpm in a production car. As long as the torque is useable, I dont care how much torque it makes.
. It's not too often you see a 4.0L V8 rev up to 8500 rpm in a production car. As long as the torque is useable, I dont care how much torque it makes.
Lexus Champion
Joined: Aug 2005
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From: CA
the sound of the ITR engine @8500 RPM is intoxicating. I can't imagine what it would sound like with the V8 @ 8500 RPM.. 
now, the IS-F with the bigger displacement (5.0) V8, HP and TQ gotta be higher than the 420 & 295 for sure..
now, the IS-F with the bigger displacement (5.0) V8, HP and TQ gotta be higher than the 420 & 295 for sure..
how can you have a higher torque # than the max hp when the higher torque # is produced at a rpm higher than the max hp?!!?!
if it has 295 ft/lbs of torque, then according to the conversion equation (hp = torque x rpm / 5252), then @ 8400, there should be 471hp!
if it has 295 ft/lbs of torque, then according to the conversion equation (hp = torque x rpm / 5252), then @ 8400, there should be 471hp!
that's what I was thinking too. The max torque rpm seemed ultra odd.
Lexus Fanatic
Joined: Jan 2005
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From: A better place
Flat torque curve or not, it still will have a lot less overall torque than the IS-F. And the IS-F could very well have more HP at a lower RPM than the M3. And we are comparing an M3 Coupe to an IS-F sedan, keep in mind. The M3 sedan with the same engine would be a bit slower.
Lead Lap
Joined: Jun 2005
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From: Ohio
Flat torque curve or not, it still will have a lot less overall torque than the IS-F. And the IS-F could very well have more HP at a lower RPM than the M3. And we are comparing an M3 Coupe to an IS-F sedan, keep in mind. The M3 sedan with the same engine would be a bit slower.
My prediction -- the IS-F will be more of a straight-line missile, more of a nature of the AMG, while M3 will be more of a curve and corner attack weapon.
Anybody knows the bore and stroke of both engines?
