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Displacement vs Cylinders

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Old Jun 9, 2014 | 06:17 AM
  #16  
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Originally Posted by yowps3
The torque curve of the 2GR & 4GR (IS350 & IS250)



This is as good as it gets. Extremley linear, so linear that you're doing high speeds without notice. Silken engines these V6 from Toyota.
problem is not linearity but the fact that 4GR does not generate enough power for the weight of the vehicles it runs... I drove GS250 and it was slow as a pig, to the point of making the vehicle look bad. And I loved my GS350.

and of course, world is not USA... Many countries have extra taxes based on fuel consumption and displacement, so 2.0l is basically a forced hand.
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Old Jun 9, 2014 | 06:22 AM
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Originally Posted by spwolf
problem is not linearity but the fact that 4GR does not generate enough power for the weight of the vehicles it runs... I drove GS250 and it was slow as a pig, to the point of making the vehicle look bad. And I loved my GS350.

The GS weighs more than the IS. All else equal, with the same engine, you would expect it to be slower.
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Old Jun 9, 2014 | 06:51 AM
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Originally Posted by mmarshall
The GS weighs more than the IS. All else equal, with the same engine, you would expect it to be slower.
The IS250 is still much slower than the turbo'd competition.
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Old Jun 9, 2014 | 07:15 AM
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sometimes speed and acceleration times are not that important.
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Old Jun 9, 2014 | 07:30 AM
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Originally Posted by chikoo
sometimes speed and acceleration times are not that important.
exactly. first off bmw sells a TON of slower models. second, sitting in traffic waiting for the light, 400HP doesn't mean much. the is250 is stylish, comfortable, highly refined, and handles very well.
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Old Jun 9, 2014 | 07:54 AM
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Originally Posted by Lexuslvr91
The IS250 is still much slower than the turbo'd competition.
The IS250 in Australia is faster than;

BMW 316i
Merdedes C200 & C180
Audi A4 1.8T
Infiniti Q50 2.2 diesel

So in conclusion the IS250 is the fastest, smoothest and most reliable base entry level sports luxury car in Australia

And based on real world comparisons it gets better real world MPG than the 3 petrol German rivals above..

The 316i is especially pethetic with its 100kW motor LOL

Last edited by yowps3; Jun 9, 2014 at 04:18 PM.
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Old Jun 9, 2014 | 08:30 AM
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Originally Posted by spwolf
problem is not linearity but the fact that 4GR does not generate enough power for the weight of the vehicles it runs... I drove GS250 and it was slow as a pig, to the point of making the vehicle look bad. And I loved my GS350.

and of course, world is not USA... Many countries have extra taxes based on fuel consumption and displacement, so 2.0l is basically a forced hand.
I agree. The 2.5 in the IS and GS is a turd. It simply makes too little horsepower for the weight and size of the car. Add in things like AWD, and it becomes even more cumbersome.

If the 2.5 made 250hp then we probably would not have any issues.
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Old Jun 9, 2014 | 11:44 AM
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Originally Posted by LexsCTJill
I agree. The 2.5 in the IS and GS is a turd. It simply makes too little horsepower for the weight and size of the car. Add in things like AWD, and it becomes even more cumbersome.
Turd or not, the IS250AWD sells like hotcakes in my area (D.C. suburbs), especially with females, who apparently don't mind the relative lack of zip from the AWD's added weight and drag. It's hard to argue with success.
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Old Jun 9, 2014 | 12:58 PM
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Originally Posted by LexsCTJill
I agree. The 2.5 in the IS and GS is a turd. It simply makes too little horsepower for the weight and size of the car. Add in things like AWD, and it becomes even more cumbersome.

If the 2.5 made 250hp then we probably would not have any issues.
Correct me if I am wrong but the 2.5 in the IS here and the 2.5 in the GS in Europe are different units.....

Considering how much non-owners have *****ed about the IS 250 the past 8-9 years while the car has sold well obviously it worked out, even with the recall.
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Old Jun 9, 2014 | 01:42 PM
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Originally Posted by LexFather

Considering how much non-owners have *****ed about the IS 250 the past 8-9 years while the car has sold well obviously it worked out, even with the recall.
One thing that is probably helping the new IS, even with its cheapening dash-plastics and the controversial grille, is the fact that the recent de-sensitizing and less-crisp handling of the formerly superb BMW 3-series (and its worse-than-average reliability) is causing some car-buyers to take a second look at the IS.
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Old Jun 9, 2014 | 02:46 PM
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Originally Posted by LexFather
Correct me if I am wrong but the 2.5 in the IS here and the 2.5 in the GS in Europe are different units.....

Considering how much non-owners have *****ed about the IS 250 the past 8-9 years while the car has sold well obviously it worked out, even with the recall.
they are the same, GS is just a bit more heavier plus a lot more quieter so the feel of speed is really low.... 4GR was good for its times, now we are ready for the replacement in the form of 2.0t...
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Old Jun 9, 2014 | 03:22 PM
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Originally Posted by mmarshall
One thing that is probably helping the new IS, even with its cheapening dash-plastics and the controversial grille, is the fact that the recent de-sensitizing and less-crisp handling of the formerly superb BMW 3-series (and its worse-than-average reliability) is causing some car-buyers to take a second look at the IS.
The 07-current IS250 sold well, particularly with women because it was relatively cheap to get into and the cost of the IS was cheap relative to what a Lexus with a 3.5 usually would start at.

A 4 banger in 2007 would never of worked in an IS. Too much weight and way too loud for what Lexus stood for back then.

Don't get me wrong, the IS250 is good car, its a good engine as well. Its just the car does weight a lot and the AWD bogs it down.
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Old Jun 9, 2014 | 05:05 PM
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As this video shows, IS/GS 250 has the wrong gearbox. Many BMW 5/ Audi A6 has less horsepower, but they have 7 speed DSG or 8 speed autos that handel the lack of power 10 times better than the Lexus one. I had the IS 250 and there is no doubt that Lexus should have updated that gearbox a long time ago. In europe the IS 250 still has this 6 speed solution.

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Old Jun 9, 2014 | 05:16 PM
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Originally Posted by chikoo
sometimes speed and acceleration times are not that important.
But you would expected increased fuel economy to be the trade off...and this is not the case with the IS.
Attached Thumbnails Displacement vs Cylinders-comparison.png  
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Old Jun 9, 2014 | 06:35 PM
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Originally Posted by bitkahuna
what do you mean by 'social view'?
Society's general view towards 'green' is what I meant
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