Lexus LC News
12-06-15, 10:00 AM
#1246
Lexus Fanatic
This seems to be the norm for Lexus, most of their high end stuff have very dated powertrains. In all honesty, I have never really taken their F stuff very seriously. BMW, Audi and MB do it so much better.
12-06-15, 02:56 PM
#1248
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I agree with you, but let's not forget that BMW and MB also have had decades to engineer and perfect their strategies for their performance brands. The first M3 and early AMGs didn't have much to offer besides more power and really the same body panels. That was their original allure, being discreet cars that didn't look much different but had better performance. Let us give Lexus a little credit and time.
12-06-15, 03:18 PM
#1249
Lexus Test Driver
I have no problem at all with them using the V8. It's a great engine that most reviewers speak highly of. I don't think the average, wealthy executive walking around a Lexus showroom would care much about tunable turbos and drag racing anyway. Think of the original roll the SC played. I look at this car as filling the same roll, part II.
12-06-15, 03:26 PM
#1250
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I have no problem at all with them using the V8. It's a great engine that most reviewers speak highly of. I don't think the average, wealthy executive walking around a Lexus showroom would care much about tunable turbos and drag racing anyway. Think of the original roll the SC played. I look at this car as filling the same roll, part II.
12-06-15, 05:31 PM
#1251
fact is that a NA 5.0 is antiquated tech. the 4.6L twin turbo that MB uses in all its high end models has just as much hp, loads more torque, and gets better MPG numbers to boot. There really is no downside but I guess we will just have to wait and see what tomoco has in store for us
The Ford 5.0 'Coyote' and 5.2 'Voodoo' also seem pretty awesome for NA V8's.
12-06-15, 06:52 PM
#1252
I have no problem at all with them using the V8. It's a great engine that most reviewers speak highly of. I don't think the average, wealthy executive walking around a Lexus showroom would care much about tunable turbos and drag racing anyway. Think of the original roll the SC played. I look at this car as filling the same roll, part II.
12-06-15, 09:01 PM
#1253
Lexus Champion
Most these turbo's are a new fad to get cheap numbers and fuel efficiency. Lets see how they hold up in 5 years time.
Btw, the GS F has had positive driving reactions. Its not a drag monster but the impressions seem pretty good. This car is brand new. I dont think its based on any current chassis(?) so there's already a positive.
Btw, the GS F has had positive driving reactions. Its not a drag monster but the impressions seem pretty good. This car is brand new. I dont think its based on any current chassis(?) so there's already a positive.
12-07-15, 03:02 AM
#1254
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Yes, but it still lacks in torque and needs to be driven really hard to give some action. The sound is actually the only real positive thing ( GS-F, RC-F) journalists and others mentions about it if you listen carefully. I know that this engine has been updated but I have driven it in the IS-F back in 2012 and I do agree with the reviews. This engine is for "sound enthusiast" not something you really put up against the competition, especially not in 2017/18.
12-07-15, 04:33 AM
#1255
Lead Lap
What do you mean? Both the engine and chassis are massaged versions of already-existing components.
12-07-15, 07:36 AM
#1256
Lexus Champion
Here we go again... The 5.0-litre V8 in the RC-F and LC is NOT an old engine...
Only the engine block (and therefore, the displacement) is shared with the original 2UR V8. The moving bits, specifically the valvetrain, is completely new and state-of-the-art with on-demand Atkinson and Otto cycles -- Atkinson cycle for efficiency at lower engine speeds and Otto cycle for power at higher engine speeds. No other automaker in the world offers this type of valvetrain, not Audi, not BMW, not Mercedes-Benz.
The 5.0-litre V8 used in the original IS-F and the 5.0-litre V8 used in the RC-F (and upcoming LC) are different engines, with a completely new valvetrain (see above). The new V8 did not come out until it was first introduced in the RC-F in 2014; it was NOT offered in the 2012 IS-F. Unless you have driven the RC-F, you have not driven this new V8.
Fixed it for you. Turbos have been slapped on smaller-displacement engines in the hope that they will give the on-demand power of larger-displacement engines but the fuel efficiency of the smaller displacement engines when driven conservatively. They work for the EPA and European fuel economy cycles but, by-and-large, the fuel economy sticker numbers have not met real-life fuel consumption figures.
The Lexus 5.0 has some pretty advanced features:
The 2UR-GSE is an all-alloy quad-cam, 32-valve V8 with Yamaha-designed high-flow cylinder heads, titanium inlet valves, high-lift camshafts and dual-length intake. It has D4-S gasoline port and direct injection, Dual VVT-i with electric VVT-iE inlet camshaft actuation. Otto and Atkinson Cycles. Compression ratio of 12.3:1
Only the engine block (and therefore, the displacement) is shared with the original 2UR V8. The moving bits, specifically the valvetrain, is completely new and state-of-the-art with on-demand Atkinson and Otto cycles -- Atkinson cycle for efficiency at lower engine speeds and Otto cycle for power at higher engine speeds. No other automaker in the world offers this type of valvetrain, not Audi, not BMW, not Mercedes-Benz.
Yes, but it still lacks in torque and needs to be driven really hard to give some action. The sound is actually the only real positive thing ( GS-F, RC-F) journalists and others mentions about it if you listen carefully. I know that this engine has been updated but I have driven it in the IS-F back in 2012 and I do agree with the reviews. This engine is for "sound enthusiast" not something you really put up against the competition, especially not in 2017/18.
Fixed it for you. Turbos have been slapped on smaller-displacement engines in the hope that they will give the on-demand power of larger-displacement engines but the fuel efficiency of the smaller displacement engines when driven conservatively. They work for the EPA and European fuel economy cycles but, by-and-large, the fuel economy sticker numbers have not met real-life fuel consumption figures.
12-07-15, 08:09 AM
#1257
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I agree with you, but let's not forget that BMW and MB also have had decades to engineer and perfect their strategies for their performance brands. The first M3 and early AMGs didn't have much to offer besides more power and really the same body panels. That was their original allure, being discreet cars that didn't look much different but had better performance. Let us give Lexus a little credit and time.
12-07-15, 08:27 AM
#1258
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Here we go again... The 5.0-litre V8 in the RC-F and LC is NOT an old engine...
Only the engine block (and therefore, the displacement) is shared with the original 2UR V8. The moving bits, specifically the valvetrain, is completely new and state-of-the-art with on-demand Atkinson and Otto cycles -- Atkinson cycle for efficiency at lower engine speeds and Otto cycle for power at higher engine speeds. No other automaker in the world offers this type of valvetrain, not Audi, not BMW, not Mercedes-Benz.
The 5.0-litre V8 used in the original IS-F and the 5.0-litre V8 used in the RC-F (and upcoming LC) are different engines, with a completely new valvetrain (see above). The new V8 did not come out until it was first introduced in the RC-F in 2014; it was NOT offered in the 2012 IS-F. Unless you have driven the RC-F, you have not driven this new V8.
Fixed it for you. Turbos have been slapped on smaller-displacement engines in the hope that they will give the on-demand power of larger-displacement engines but the fuel efficiency of the smaller displacement engines when driven conservatively. They work for the EPA and European fuel economy cycles but, by-and-large, the fuel economy sticker numbers have not met real-life fuel consumption figures.
Only the engine block (and therefore, the displacement) is shared with the original 2UR V8. The moving bits, specifically the valvetrain, is completely new and state-of-the-art with on-demand Atkinson and Otto cycles -- Atkinson cycle for efficiency at lower engine speeds and Otto cycle for power at higher engine speeds. No other automaker in the world offers this type of valvetrain, not Audi, not BMW, not Mercedes-Benz.
The 5.0-litre V8 used in the original IS-F and the 5.0-litre V8 used in the RC-F (and upcoming LC) are different engines, with a completely new valvetrain (see above). The new V8 did not come out until it was first introduced in the RC-F in 2014; it was NOT offered in the 2012 IS-F. Unless you have driven the RC-F, you have not driven this new V8.
Fixed it for you. Turbos have been slapped on smaller-displacement engines in the hope that they will give the on-demand power of larger-displacement engines but the fuel efficiency of the smaller displacement engines when driven conservatively. They work for the EPA and European fuel economy cycles but, by-and-large, the fuel economy sticker numbers have not met real-life fuel consumption figures.
12-07-15, 11:34 AM
#1259
Lexus Champion
Stop accusing people of spreading misinformation if you do not know what you are talking about.
It is not just a greater compression ratio. The valvetrain is new. It allows the engine to run on the high-efficiency Atkinson cycle at low rpm and switches to normal Otto cycle at high rpm.
No other automaker has this on-demand switching between Atkinson and Otto cycles for efficiency and power.
12-07-15, 12:28 PM
#1260
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Stop accusing people of spreading misinformation if you do not know what you are talking about.
It is not just a greater compression ratio. The valvetrain is new. It allows the engine to run on the high-efficiency Atkinson cycle at low rpm and switches to normal Otto cycle at high rpm.
No other automaker has this on-demand switching between Atkinson and Otto cycles for efficiency and power.
It is not just a greater compression ratio. The valvetrain is new. It allows the engine to run on the high-efficiency Atkinson cycle at low rpm and switches to normal Otto cycle at high rpm.
No other automaker has this on-demand switching between Atkinson and Otto cycles for efficiency and power.