LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

LS 600H press Conference Live 9:25 a.m. on Wednesday, April 12, 2006 pg52

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Old 03-22-06, 09:21 AM
  #706  
GFerg
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Originally Posted by XeroK00L
No one in the latest discussion seems to remember the rumor of a 5.0L V8 in the LS600h from many sources. I think that really makes a lot more sense. The electric drivetrain including the batteries are so heavy and bulky as they are, Lexus can't make it even heavier and bulkier in the LS hybrid. So the electric drivetrain in the LS600h will actually be contributing a 1-liter bump in "virtual displacement" from an "LS500", the same amount of bump from the GS350 to the GS450h.

So by extrapolating the horsepower from the 380hp 4.6L V8 in the LS460, we get 380hp x 5.0L / 4.6L = 413hp. Since the V6 in the GS hybrid gets detuned from 306hp to 292hp, a decrease of (306hp - 292hp) / 306hp x 100% = 4.575%, the 5.0L V8 in the LS600h is likely to get detuned to 413hp x (100 - 4.575)% = 394hp. Throwing in the same electric drivetrain from the GS450h that adds 339hp - 292hp = 47hp in peak horsepower, we get 394hp + 47hp = 441hp for the LS600h.

Of course, the above assumes that the GS hybrid and the LS hybrid shares same electric drivetrain, which might not be the case. But I seriously doubt that the LS hybrid will get an even more powerful one, since the weight gain and space loss will be simply too much.

Comments are welcome.
I guess you didnt read my post where I basically said the same thing then. But I agree with ya man.
Old 03-22-06, 09:31 AM
  #707  
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Originally Posted by magneto112
I guess you didnt read my post where I basically said the same thing then. But I agree with ya man.
Ahh I was blind when I read your posts. Yep hopefully the rumor of the 5.0L V8 is true, which can also foreshadow an IS500.
Old 03-22-06, 09:55 AM
  #708  
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If I can have my say, I'd just take the LS600h with 5.0 litre without the detuning nonsense, plus the HSD & get the equivalent of at least 460 hp
Old 03-22-06, 10:24 AM
  #709  
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Originally Posted by magneto112
But also if you notice that the GS450h only makes 339hp, weighs more than the direct competition by about 200-300lbs, and it is still able to achieve faster accleration times than a 550i(360hp), M45(335hp), E500(302hp). The HSD's are actually THAT powerful!! So a lower than average 420-450hp range might be justifiable.

Something to think about.
The M45 tips the scales over 4000lbs, so compared to that car, its only 100+ lbs more WITH hybrid tech. Now that is advancement
Old 03-22-06, 10:26 AM
  #710  
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Originally Posted by XeroK00L
No one in the latest discussion seems to remember the rumor of a 5.0L V8 in the LS600h from many sources. I think that really makes a lot more sense. The electric drivetrain including the batteries are so heavy and bulky as they are, Lexus can't make it even heavier and bulkier in the LS hybrid. So the electric drivetrain in the LS600h will actually be contributing a 1-liter bump in "virtual displacement" from an "LS500", the same amount of bump from the GS350 to the GS450h.

So by extrapolating the horsepower from the 380hp 4.6L V8 in the LS460, we get 380hp x 5.0L / 4.6L = 413hp. Since the V6 in the GS hybrid gets detuned from 306hp to 292hp, a decrease of (306hp - 292hp) / 306hp x 100% = 4.575%, the 5.0L V8 in the LS600h is likely to get detuned to 413hp x (100 - 4.575)% = 394hp. Throwing in the same electric drivetrain from the GS450h that adds 339hp - 292hp = 47hp in peak horsepower, we get 394hp + 47hp = 441hp for the LS600h.

Of course, the above assumes that the GS hybrid and the LS hybrid shares same electric drivetrain, which might not be the case. But I seriously doubt that the LS hybrid will get an even more powerful one, since the weight gain and space loss will be simply too much.

Comments are welcome.
I was originally thinking about 450hp but Lexus is so conservative and the more power=less reliable.

Your post makes TONS of sense though
Old 03-22-06, 03:32 PM
  #711  
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Originally Posted by XeroK00L
No one in the latest discussion seems to remember the rumor of a 5.0L V8 in the LS600h from many sources. I think that really makes a lot more sense. The electric drivetrain including the batteries are so heavy and bulky as they are, Lexus can't make it even heavier and bulkier in the LS hybrid. So the electric drivetrain in the LS600h will actually be contributing a 1-liter bump in "virtual displacement" from an "LS500", the same amount of bump from the GS350 to the GS450h.

So by extrapolating the horsepower from the 380hp 4.6L V8 in the LS460, we get 380hp x 5.0L / 4.6L = 413hp. Since the V6 in the GS hybrid gets detuned from 306hp to 292hp, a decrease of (306hp - 292hp) / 306hp x 100% = 4.575%, the 5.0L V8 in the LS600h is likely to get detuned to 413hp x (100 - 4.575)% = 394hp. Throwing in the same electric drivetrain from the GS450h that adds 339hp - 292hp = 47hp in peak horsepower, we get 394hp + 47hp = 441hp for the LS600h.

Of course, the above assumes that the GS hybrid and the LS hybrid shares same electric drivetrain, which might not be the case. But I seriously doubt that the LS hybrid will get an even more powerful one, since the weight gain and space loss will be simply too much.

Comments are welcome.
that is quite a bit of calculations that I don't understand, but it looks right...i hope you're right about the numbers

Lexus will probably only tell us that it produces more than 400 hp and will get to 60 in less than 5 seconds at the NYIAS, then they will come with exact figures that match yours

IN REGARDS TO THE IS DEBUT

maybe it will debut in LA since it is i December this year
Old 03-22-06, 05:25 PM
  #712  
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Originally Posted by XeroK00L
No one in the latest discussion seems to remember the rumor of a 5.0L V8 in the LS600h from many sources. I think that really makes a lot more sense. The electric drivetrain including the batteries are so heavy and bulky as they are, Lexus can't make it even heavier and bulkier in the LS hybrid. So the electric drivetrain in the LS600h will actually be contributing a 1-liter bump in "virtual displacement" from an "LS500", the same amount of bump from the GS350 to the GS450h.

So by extrapolating the horsepower from the 380hp 4.6L V8 in the LS460, we get 380hp x 5.0L / 4.6L = 413hp. Since the V6 in the GS hybrid gets detuned from 306hp to 292hp, a decrease of (306hp - 292hp) / 306hp x 100% = 4.575%, the 5.0L V8 in the LS600h is likely to get detuned to 413hp x (100 - 4.575)% = 394hp. Throwing in the same electric drivetrain from the GS450h that adds 339hp - 292hp = 47hp in peak horsepower, we get 394hp + 47hp = 441hp for the LS600h.

Of course, the above assumes that the GS hybrid and the LS hybrid shares same electric drivetrain, which might not be the case. But I seriously doubt that the LS hybrid will get an even more powerful one, since the weight gain and space loss will be simply too much.

Comments are welcome.
I don't think that formula works, because its peak hp of the electric motor plus the gas engine at the same rpm, so depending on how much the gas engine makes at the same point where the electric motor is at is where the combined peak hp is

e.g. gas engines has a flat hp curve from 250hp at 3500rpm + 100hp eletric motor at 3500rpm = 350hp combined, that's how I thought that was calculated
Old 03-22-06, 05:31 PM
  #713  
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Originally Posted by xioix
I don't think that formula works, because its peak hp of the electric motor plus the gas engine at the same rpm, so depending on how much the gas engine makes at the same point where the electric motor is at is where the combined peak hp is

e.g. gas engines has a flat hp curve from 250hp at 3500rpm + 100hp eletric motor at 3500rpm = 350hp combined, that's how I thought that was calculated
Gas engines have a flat hp curve? You're confusing torque curve with hp curve here.

But you're right, since the RPM at which the peak combined horsepower occurs is different than the RPMs at which peak horsepowers of the two different motors occurs, my formula can't be very accurate, though I don't think it'll be far, either.
Old 03-23-06, 01:15 AM
  #714  
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There seems to be a paucity of info, articles, or rumors about the engine and whatever other characteristics the LS 600h would have....any Japanese car magazines have any scoop?
Old 03-23-06, 07:34 AM
  #715  
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All id like to say is that the HP for the new LS600h will be about 435HP.

but what do i know? lol
Old 03-23-06, 08:22 AM
  #716  
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Originally Posted by GS3rdwow
All id like to say is that the HP for the new LS600h will be about 435HP.

but what do i know? lol
not a damn thing


Last edited by magneto112; 03-23-06 at 09:05 AM.
Old 03-23-06, 08:59 AM
  #717  
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Originally Posted by GS3rdwow
All id like to say is that the HP for the new LS600h will be about 435HP.

but what do i know? lol
how disappointing if so, considering that the ls460 is already 380hp. if the hybrid is going to be like 10k+ more, it better has more than just 50hp increase, otherwise it's going to be really hard (at least for me) to justify it
Old 03-23-06, 09:43 AM
  #718  
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Originally Posted by rominl
how disappointing if so, considering that the ls460 is already 380hp. if the hybrid is going to be like 10k+ more, it better has more than just 50hp increase, otherwise it's going to be really hard (at least for me) to justify it
Hybrids never have huge amounts of hp total, I think performance numbers are more important than HP. If it goes 0-60 well under 5sec 0-60, it would be quite nice. So it doesnt matter if it says 340, 380, 440 or 480, as long as it is fast...
Old 03-23-06, 10:50 AM
  #719  
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I think these 'HP' numbers for gas/electric hybrid drivetrains are not very meaningful. They probably have more to do with not making the insurance too outrageous than reality.

The reviews on the GS450h all talk about how awesome the PASSING power is. That's not something you really see on a dyno.

So a combo # of 420 or whatever for an LS600h could still be a BEAST in the real world.

Don't get too hung up on the numbers guys.
Old 03-23-06, 11:32 PM
  #720  
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Originally Posted by spwolf
Hybrids never have huge amounts of hp total, I think performance numbers are more important than HP. If it goes 0-60 well under 5sec 0-60, it would be quite nice. So it doesnt matter if it says 340, 380, 440 or 480, as long as it is fast...
very good point, i agree with you, the hp numbers for hybrid doesn't add up that way. though in that case i think lexus will have more work to do to make customers compere the cars not just based on hp


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