Lexus Future Product & Powertrain Megathread (II)

larryren

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The GAC Trumpchi GS8 hybrid get some excellent reviews in real world tests. GAC did an incredible job by combining the off-the-shelf Blue Nexus P810 solution and an indigenous engine and got a much better system than Toyota's own A25+P810 solution. I never got the chance to actually drive one so I would like to hear my Chinese friends on their thoughts on this product.

The GS8 2WD got ~6.4-6.6L/100km in combined real world driving. In a similar cycle tested by the same outlet, the Highlander Hybrid E-Four got ~6.6L/100km for 2WD and ~7.0L/100km for AWD. It's safe to say the two systems are almost identical in terms of fuel efficiency.
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0-100km/h takes only 6.9s. That's much faster than Highlander Hybrid with similar weight and power (8.4s). This is a very high achievement ratio (I calculated 0.625 compared to 0.528 for NX300h and 0.522 for Highlander Hybrid).
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The engine codename is 4B20J2. It is a 2.0L turbocharged Inline-4 Miller-cycle engine with a peak thermal efficiency of 40%. Power is 1kW lower than Highlander's A25 but torque is 34% higher. Like the A25 it takes 92RON (87AKI) regular fuel.
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The biggest advantage of the 2.0T combination is vastly improved NVH since peak torque is not only higher but available at only 1500rpm. While the A25 needs to rev to over 4000rpm under heavy acceleration, the 4B20J2 stays below 2000rpm. Almost all reviews noted this powertrain is considerably more refined than Toyota's 350h system and is more appropriate for a luxury car.

At the beginning, Toyota engineers recommended against using an unproven turbocharged engine (typical for them) with THS, so to convince them, GAC tested the powertrain under the same standards as Toyota and it turned out to be reliable. The performance and NVH metrics impressed Toyota so much they want something similar (hints at a future S20A-FTS + P810 combination?). From an old Chinese idiom, this is "cyan comes from blue but is greater than blue".
I have been tested GS8 Hybrid and you can see my reply on this thread on Jun. BTW, in this month of the Chinese MIIT's to declare and publicize, the GAC 2nd Gen. M8 (a MPV) also have HEV and PHEV version. According the website, new M8 HEV/PHEV also using 4B20J2, so most likely to continue using Toyota's THS. It will be fun when THS got turbo and large battery(SO powerful 😄 )
 

ssun30

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I have been tested GS8 Hybrid and you can see my reply on this thread on Jun. BTW, in this month of the Chinese MIIT's to declare and publicize, the GAC 2nd Gen. M8 (a MPV) also have HEV and PHEV version. According the website, new M8 HEV/PHEV also using 4B20J2, so most likely to continue using Toyota's THS. It will be fun when THS got turbo and large battery(SO powerful 😄 )
I saw that. It's literally a LM copy.
 

carguy420

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I have been tested GS8 Hybrid and you can see my reply on this thread on Jun. BTW, in this month of the Chinese MIIT's to declare and publicize, the GAC 2nd Gen. M8 (a MPV) also have HEV and PHEV version. According the website, new M8 HEV/PHEV also using 4B20J2, so most likely to continue using Toyota's THS. It will be fun when THS got turbo and large battery(SO powerful 😄 )
I can't wait to test how the RX500h FSP is like.
 

larryren

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The S20A spec had fully cleared since FAW-Toyota Crown Kluger 2.0T debut today in Chengdu Autoshow.
The engine bore×stroke is 85.0×88.0mm, it isn't similar to M20/A25, more like using V35's bore with shorter stroke and turn to Inline-4.....


QQ截图20220826172906.jpg
 

qtb007

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The S20A spec had fully cleared since FAW-Toyota Crown Kluger 2.0T debut today in Chengdu Autoshow.
The engine bore×stroke is 85.0×88.0mm, it isn't similar to M20/A25, more like using V35's bore with shorter stroke and turn to Inline-4.....


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The simple answer is that it a T24 with a smaller bore and different rods and crank to shorten the stroke. These engines use steel inserts that are cast into the block, so the block could theoretically be the same with a different insert. It could even go down the same machining line with a tool center that has tools for each bore size.
 

ssun30

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That is a really low stroke-to-bore ratio for a Dynamic Force engine (or any modern engine in general). It's usually 1.1-1.2 to maximize thermal efficiency.
 

mikeavelli

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I’ve been asked not to post for obvious reasons. I will say if you are good, some things seem to be floating on IG…..

Dealer Meeting ends tomorrow officially
 

Gor134

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What I found on IG.. the GR GT3 is officially badged as a Lexus.. though I'm sure we all basically knew it would. But something tells me Mike saw juicier stuff and I want to know what 😭😭
 

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larryren

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Sorry about turbo with THS PHEV guessing, because GAC using they own system for PHEV M8. It seem also wait TMC itself.
 

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What I found on IG.. the GR GT3 is officially badged as a Lexus.. though I'm sure we all basically knew it would. But something tells me Mike saw juicier stuff and I want to know what 😭😭

OH HOLY SH*T. This is it. I saw the amazing Ben Barnicoat take a picture of the RC F GT3. So the GR GT3 pictured had to be right next to the RC F GT3.

There's probably some powertrain information that has been spread as well.

But this seems to be the dealer event that has happened right now in Chicago. Not sure why Mike didn't just say it from the get-go because I saw Lexus of Concord make the post.
 
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