Lexus IS-F: Weak

T Bone · 10-31-2007, 03:11 PM

http://www.automobilemag.com/reviews...art/index.html

WEAK!!! No power in the part of the curve that matters. This engine is meant to put around town with torque way down low.

Sedan_Clan · 10-31-2007, 03:17 PM

Waits for the IS-F lover rebuttle!

F32Fleet · 10-31-2007, 03:23 PM

Quote:

Originally Posted by T Bone

http://www.automobilemag.com/reviews...art/index.html

WEAK!!! No power in the part of the curve that matters. This engine is meant to put around town with torque way down low.

I guess this means it fits the driving habits of the majority of buyers who would cross shop this car with the M3.

Nyulak · 10-31-2007, 04:59 PM

Those eight gears will get plenty of use keeping the engine in its power band, so there won't be much of a problem with keeping the car moving. If the torque curve stayed flatter past 6k all the way to 8k RPM, then you would have one heck of an engine. It's a little difficult to get a large engine to scream at high RPMs without the vehicle costing a lot more to make up for the additional technology, or sacrificing the bottom-end to get big dyno numbers that don't translate to an enjoyable driving experience.

T Bone · 10-31-2007, 08:35 PM

Quote:

Originally Posted by Nyulak

Those eight gears will get plenty of use keeping the engine in its power band, so there won't be much of a problem with keeping the car moving. If the torque curve stayed flatter past 6k all the way to 8k RPM, then you would have one heck of an engine. It's a little difficult to get a large engine to scream at high RPMs without the vehicle costing a lot more to make up for the additional technology, or sacrificing the bottom-end to get big dyno numbers that don't translate to an enjoyable driving experience.

But this is just it...the torque curve of this engine suits partial throttle driving....WOT and mass acceleration means a falling torque curve.

I wonder why it can't breathe at high rpms?

Nyulak · 10-31-2007, 10:15 PM

The 8 gears are narrowly spaced, so it just short shifts to the next gear, therefore keeping it in the power band. What they didn't achieve with the engine was brought to life with the transmission. This is why big-rigs have 10+ gears in their transmissions. Even with a narrow power band, the trucks can perform well because they have a transmission that is constantly shifting gears to find the right ratios.

The end result is a vehicle that performs very well. Still, it's ugly...

DFW_M · 11-01-2007, 07:39 AM

a 100HP loss from crank to wheels!!!
How doe they pass with that???
It should not be rated at over 400HP

Kiemyster · 11-01-2007, 08:08 AM

i laugh and spit on then IS-F

10-31-2007, 03:11 PM	#1
T Bone Brigadier General 550 Rep 4,021 Posts Drives: 2008 335xi Coupe Join Date: Feb 2007 Location: The land where we kill baby seals iTrader: (0)	Lexus IS-F: Weak http://www.automobilemag.com/reviews...art/index.html WEAK!!! No power in the part of the curve that matters. This engine is meant to put around town with torque way down low. __________________ "Aerodynamics are for people who cannot build engines"......Enzo Ferrari
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10-31-2007, 03:17 PM	#2
Sedan_Clan Law Enforcer 27022 Rep 22,715 Posts Drives: '22 Chalk Gray Porsche C2S Join Date: Jun 2006 Location: ..in your rearview!!! iTrader: (26)	Waits for the IS-F lover rebuttle!
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10-31-2007, 04:59 PM	#4
Nyulak Captain 29 Rep 957 Posts Drives: 2022 X3 M40i Join Date: Feb 2007 Location: SheffVill, OH iTrader: (4) Garage List 2009 BMW 535xi [10.00]	Those eight gears will get plenty of use keeping the engine in its power band, so there won't be much of a problem with keeping the car moving. If the torque curve stayed flatter past 6k all the way to 8k RPM, then you would have one heck of an engine. It's a little difficult to get a large engine to scream at high RPMs without the vehicle costing a lot more to make up for the additional technology, or sacrificing the bottom-end to get big dyno numbers that don't translate to an enjoyable driving experience.
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10-31-2007, 10:15 PM	#6
Nyulak Captain 29 Rep 957 Posts Drives: 2022 X3 M40i Join Date: Feb 2007 Location: SheffVill, OH iTrader: (4) Garage List 2009 BMW 535xi [10.00]	The 8 gears are narrowly spaced, so it just short shifts to the next gear, therefore keeping it in the power band. What they didn't achieve with the engine was brought to life with the transmission. This is why big-rigs have 10+ gears in their transmissions. Even with a narrow power band, the trucks can perform well because they have a transmission that is constantly shifting gears to find the right ratios. The end result is a vehicle that performs very well. Still, it's ugly...
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11-01-2007, 07:39 AM	#7
DFW_M Major General 1783 Rep 6,669 Posts Drives: 991.1 C2Sc Join Date: Jul 2006 Location: Dallas, TX iTrader: (4)	a 100HP loss from crank to wheels!!! How doe they pass with that??? It should not be rated at over 400HP
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11-01-2007, 08:08 AM	#8
Kiemyster Bimmerpost Resident Marijuana Consultant 476 Rep 3,202 Posts Drives: 320i, 325xi, 335Xi, 335i, M3 Join Date: Nov 2006 Location: Queens/NYC iTrader: (4) Garage List 2010 BMW 335i [0.00] 2011 BMW X335i [0.00] 2006 BMW E90 325xi [0.00] 2011 BMW E90 335xi [4.00] 2011 BMW M3 E90 [7.00] 2006 E90 320i [0.00]	i laugh and spit on then IS-F __________________ "AMG What! S-Line Who? If you ain't got that M I got no respect for you!" '06 Alpine Weiss E90 320i \| '06 The Green Machine E90 325xi \| '11 Alpine Weiss E90 M3 ZCP \| '10 Silverstone X5M \| '11 Alpine Weiss E90 335xi
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