Official Lexus RC thread

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Dec 4, 2013 | 06:22 PM
  #1336  
Less talk on HID vs LED, moar pics.
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Dec 4, 2013 | 06:34 PM
  #1337  
Quote: I'm going by the Honda Accord LED headlamp experience ^^.

The lighting was not as bright and did not have the range of a average XENON HID projector headlamp. Also the cutoff line wasn't as sharp.

The only thing LED have in their advantage is the design.

Also if manufactures are running a high current the LEDs need to be cooled somehow or they will melt.
Please don't use an Accord as the standard for LEDs. We are talking about luxury cars here. Does the Accord even offer LED headlights? I know LED DRL's are an option.

Meh, back to the RC….
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Dec 4, 2013 | 08:49 PM
  #1338  
is a turbo/supercharger almost a sure no in one of these cars within 1-2 years?

the 5.0L v8 was a monster in the isf. But the industry is now trending towards smaller efficient engines with turbos.
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Dec 4, 2013 | 08:55 PM
  #1339  
Quote: Please don't use an Accord as the standard for LEDs. We are talking about luxury cars here. Does the Accord even offer LED headlights? I know LED DRL's are an option.

Meh, back to the RC….
Yeah in Australia the Accord V6 comes with full LED headlamps and also LED DRL

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Dec 4, 2013 | 08:58 PM
  #1340  
Quote: is a turbo/supercharger almost a sure no in one of these cars within 1-2 years?

the 5.0L v8 was a monster in the isf. But the industry is now trending towards smaller efficient engines with turbos.
There is nothing fuel efficient about a TT V6. Might as well get a V8 if it's available.

If you really want a good MPG car look no further than the SOHC 1.8L Civic! Very good real world MPG with that car.
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Dec 4, 2013 | 09:44 PM
  #1341  
Quote: There is nothing fuel efficient about a TT V6. Might as well get a V8 if it's available.

If you really want a good MPG car look no further than the SOHC 1.8L Civic! Very good real world MPG with that car.
i'm talking more about horsepower to fuel consumption.

a turbo smaller v6 is no doubt more fuel efficient than the 10 year old 3.5L v6.

and a bigger turbo v6 is no doubt more fuel efficient than a 5.0 v8 at the same horsepower/torque.
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Dec 4, 2013 | 09:52 PM
  #1342  
Quote: i'm talking more about horsepower to fuel consumption.

a turbo smaller v6 is no doubt more fuel efficient than the 10 year old 3.5L v6.

and a bigger turbo v6 is no doubt more fuel efficient than a 5.0 v8 at the same horsepower/torque.
EPA rated maybe. Real world, no. Turboed engine will likely to burn more fuel than 5.0 V8 if your right foot is heavy. Implementation of Cylinder deactivation on V8 "Like C7" will boost fuel efficiency on V8 much more than going to smaller engine.
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Dec 4, 2013 | 10:07 PM
  #1343  
Quote: i'm talking more about horsepower to fuel consumption.

a turbo smaller v6 is no doubt more fuel efficient than the 10 year old 3.5L v6.

and a bigger turbo v6 is no doubt more fuel efficient than a 5.0 v8 at the same horsepower/torque.
TT V6 are the biggest guzzlers around, believe me. These things suck gas like a jet.

A 5.0L V8 can be pretty good on gas at light to moderate throttle. And at WOT they still drink less than a TT V6

This is why TT V6 always have their gears tuned to be on the highest ratio, stop start and other features to curb fuel consumption.
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Dec 4, 2013 | 10:15 PM
  #1344  
Quote: EPA rated maybe. Real world, no. Turboed engine will likely to burn more fuel than 5.0 V8 if your right foot is heavy. Implementation of Cylinder deactivation on V8 "Like C7" will boost fuel efficiency on V8 much more than going to smaller engine.
Very true!
Reply 0
Dec 4, 2013 | 10:28 PM
  #1345  
of course i'm talking real world where 90% of driving doesn't go past 4000 rpms.

lets not fool ourselves. going with a 5.0L v8 instead of a turbo v6 would be a bit old school... but reliability would be high because the design has been proven for so long.

the biggest knock against lexus is handling/driving feel. having a heavier v8 up front would not be a good first step in the right direction.
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Dec 4, 2013 | 10:50 PM
  #1346  
Quote: the biggest knock against lexus is handling/driving feel. having a heavier v8 up front would not be a good first step in the right direction.
the RCF has been designed with a V8 in mind, hopefully. there is no excuse if this car comes out and its a nose heavy understeering pig...
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Dec 4, 2013 | 11:11 PM
  #1347  
Quote: of course i'm talking real world where 90% of driving doesn't go past 4000 rpms.

lets not fool ourselves. going with a 5.0L v8 instead of a turbo v6 would be a bit old school... but reliability would be high because the design has been proven for so long.

the biggest knock against lexus is handling/driving feel. having a heavier v8 up front would not be a good first step in the right direction.

Considering that the latest generation of Lexus cars, specifically the 3IS and 4GS are the best handling sedans in their class, I'm going to give Lexus the benefit of the doubt in this case.
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Dec 5, 2013 | 04:27 AM
  #1348  
Quote: of course i'm talking real world where 90% of driving doesn't go past 4000 rpms.

lets not fool ourselves. going with a 5.0L v8 instead of a turbo v6 would be a bit old school... but reliability would be high because the design has been proven for so long.

the biggest knock against lexus is handling/driving feel. having a heavier v8 up front would not be a good first step in the right direction.
Heavier? Perhaps so. But a TT V6 with the two turbochargers, plumbing and the inter coolers is all extra added weight.
Toyota even claims that the new 2.0t 4-cyl is heavier than the 2.5L V6 in the IS250!
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Dec 5, 2013 | 04:47 AM
  #1349  
Quote: Heavier? Perhaps so. But a TT V6 with the two turbochargers, plumbing and the inter coolers is all extra added weight.
Toyota even claims that the new 2.0t 4-cyl is heavier than the 2.5L V6 in the IS250!
Turbos V6 can be more powerful than V8.

But I agree that for the simplicity, linear power, no lags, better gas ...the Na V8 is better

That is why Toyota and Honda never really cared about going turbos.

The main points is that they want simplicity in maintenance and parts.

Also, TT v6 can only get so much more on after market boost....NA V8 gets waysss much much more with after market Turbo. No replacement for displacement
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Dec 5, 2013 | 08:34 AM
  #1350  
Quote: Yeah in Australia the Accord V6 comes with full LED headlamps and also LED DRL

So you have driven this Accord in Australia to give us all feedback on LED lights? Maybe I missed that you did drive it in Australia.
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