Lexus IS500 F SPORT Performance
#346
Lexus Test Driver
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Go on other forums and social media - this created a buzz and ppl really like the idea of IS500. It generated positive views on Lexus as a performance brand.
Ofcourse IS-F would have been better but to say it would be better not to have ISF or IS500?🤔
#347
Lexus Test Driver
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#348
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Thanks. Don’t get me wrong...it is good that Lexus added the V8 to the IS range. I just think it’s a little unusual for Toyota to bring back a V8 they once used in a IS sedan a generation prior. I have never seen Toyota do something like this prior to this move and I have followed Toyota my whole life. I am quite surprised they did this move. Even more surprised they did not call it a F....
467 Horsepower V8. Any Questions?
It’s a good day for engineers when they’re tasked with redesigning a 416 horsepower high-performance V8 to produce even more power and higher revs. The 5.0-liter V8 in the Lexus IS F made its mark. Now it’s the RC F’s turn.
Taking the sound and feel of instantaneous torque of the LFA V10 engine as inspiration, the engineers essentially kept the cylinder block and replaced most other parts. Thanks mostly to all-new cylinder heads, higher compression and lighter internal parts, horsepower has soared by 51 hp to 467 hp, and the engine can now rev to 7,100 rpm vs. 6,800 rpm in the IS F. The compression ratio has been raised to 12.3:1 (from 11.8:1), boosting torque across the entire engine speed range. Improved engine and transmission cooling systems handle track-day driving.
Here’s where Lexus got creative. Uniquely for a Lexus performance engine, the new 2UR-GSE V8 runs on the Atkinson cycle when operating at cruising speeds, to help enhance fuel economy. It’s a trick picked up from the brand’s hybrids. In the Atkinson cycle, the inlet valves are held open longer than normal to allow a reverse flow of intake air into the intake manifold, thereby decreasing pumping loss and increasing thermal efficiency.
Lexus redesigned the VVT-iE (Variable Valve Timing-intelligent Electric motor) technology to extend the range of inlet camshaft timing adjustment for the Atkinson cycle. The instant more power is called for, the engine switches to the Otto cycle.
Special features of the RC F engine include titanium valves, forged connecting rods, an optimized exhaust layout to more effectively harness exhaust pulses and an air-cooled oil cooler for optimum durability.
New or redesigned parts include:
Digging Into the Metal
It’s a good day for engineers when they’re tasked with redesigning a 416 horsepower high-performance V8 to produce even more power and higher revs. The 5.0-liter V8 in the Lexus IS F made its mark. Now it’s the RC F’s turn.
Taking the sound and feel of instantaneous torque of the LFA V10 engine as inspiration, the engineers essentially kept the cylinder block and replaced most other parts. Thanks mostly to all-new cylinder heads, higher compression and lighter internal parts, horsepower has soared by 51 hp to 467 hp, and the engine can now rev to 7,100 rpm vs. 6,800 rpm in the IS F. The compression ratio has been raised to 12.3:1 (from 11.8:1), boosting torque across the entire engine speed range. Improved engine and transmission cooling systems handle track-day driving.
Here’s where Lexus got creative. Uniquely for a Lexus performance engine, the new 2UR-GSE V8 runs on the Atkinson cycle when operating at cruising speeds, to help enhance fuel economy. It’s a trick picked up from the brand’s hybrids. In the Atkinson cycle, the inlet valves are held open longer than normal to allow a reverse flow of intake air into the intake manifold, thereby decreasing pumping loss and increasing thermal efficiency.
Lexus redesigned the VVT-iE (Variable Valve Timing-intelligent Electric motor) technology to extend the range of inlet camshaft timing adjustment for the Atkinson cycle. The instant more power is called for, the engine switches to the Otto cycle.
Special features of the RC F engine include titanium valves, forged connecting rods, an optimized exhaust layout to more effectively harness exhaust pulses and an air-cooled oil cooler for optimum durability.
New or redesigned parts include:
- Cylinder heads and cam covers
- Crankshaft: crank pin diameter, connecting rod big-end bearing size and crank counter-weight size are all reduced, to reduce reciprocating weight
- Crank main bearings and caps
- High-strength forged connecting rods
- Pistons and piston rings
- Titanium inlet and exhaust valves
- Intake manifold and throttle body
- Redesigned Variable Valve Timing-intelligent Electric motor (VVT-iE)
- Revised Lexus D-4S dual injection system
- Four-into-one exhaust headers and heat insulators
- Oil pan and baffle plate
- Alternator clutch system
- Engine and transmission oil coolers
- Spark plugs
Digging Into the Metal
- The new cylinder heads improve the 2UR-GSE engine’s breathing with improved porting and a high-flow/high tumble ratio. In addition, intake surge-tank capacity has been optimized, as have the intake manifold runner length and diameter.
- The new oil pan baffle shape reduces agitation and hence friction, while new air-to-oil coolers for the engine oil and transmission fluid increase track suitability.
- The Lexus D-4S dual-injection system has been redesigned, with higher injection pressure of 2,611 psi and improved fuel atomization.
- The throttle diameter was increased by 10 percent, from 3 to 3.3 inches (84 mm).
- A new intake camshaft profile increases valve lift and suits the Atkinson cycle, while improvements to the electronic VVT-iE system have expanded its range of operation for increased fuel economy and performance.
- New four-into-two exhaust headers help reduce interference and hence further improve engine breathing. The larger-diameter exhaust system is designed to reduce backpressure and sound amazing, especially under acceleration. At the same time, the main muffler keeps things from getting too rowdy at lower speeds.
- As a final touch, the new 2UR-GSE engine has a one-way clutch on the alternator pulley.
#349
Lexus Test Driver
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This makes ZERO sense.
Go on other forums and social media - this created a buzz and ppl really like the idea of IS500. It generated positive views on Lexus as a performance brand.
Ofcourse IS-F would have been better but to say it would be better not to have ISF or IS500?🤔
Go on other forums and social media - this created a buzz and ppl really like the idea of IS500. It generated positive views on Lexus as a performance brand.
Ofcourse IS-F would have been better but to say it would be better not to have ISF or IS500?🤔
I also disagree completely that this is positive for Lexus as a performance brand - in fact it tells me the exact opposite. It tells me that Lexus is a boring and pathetic brand. The IS500 shows Lexus isn't serious at all about creating performance vehicles, because - as I already stated - it shows Lexus understands there is a market for V8 engines across the entire vehicle spectrum but that they're not willing to do more than shoehorn it into an existing product.
That's why Lexus introducing an IS500 and no IS F is the absolute worst possible scenario for all Lexus F fans and enthusiasts - because it so clearly demonstrates Lexus is no longer interested in doing the serious work of making driver-focused, driver-oriented cars.
#350
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Join Date: Nov 2004
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... 8 years later we are V8 slapping the 2008 2UR-GSE into a refreshed IS (old chassis w/new skin)
No one else wants to see this lack luster move..!!
![Dunno](https://www.clublexus.com/forums/images/smilies/13879dunno.gif)
I / WE know all about the 2UR-GSE from 2008 and Today.. 416 vs 467 to now 472 HP
The engine designation remainded the same for a REASON. We're talking a 56 HP difference with minor tweaking.
See the attached specs from IS F for the RC F debut @467 HP
https://global.yamaha-motor.com/jp/d...wse/51gs01.pdf
Joe Z
#351
Lexus Test Driver
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They skipped over the IS F when this IS chassis came out in 2014...
... 8 years later we are V8 slapping the 2008 2UR-GSE into a refreshed IS (old chassis w/new skin)
No one else wants to see this lack luster move..!!![Dunno](https://www.clublexus.com/forums/images/smilies/13879dunno.gif)
I / WE know all about the 2UR-GSE from 2008 and Today.. 416 vs 467 to now 472 HP
The engine designation remainded the same for a REASON. We're talking a 56 HP difference with minor tweaking.
See the attached specs from IS F for the RC F debut @467 HP
https://global.yamaha-motor.com/jp/d...wse/51gs01.pdf
Joe Z
... 8 years later we are V8 slapping the 2008 2UR-GSE into a refreshed IS (old chassis w/new skin)
No one else wants to see this lack luster move..!!
![Dunno](https://www.clublexus.com/forums/images/smilies/13879dunno.gif)
I / WE know all about the 2UR-GSE from 2008 and Today.. 416 vs 467 to now 472 HP
The engine designation remainded the same for a REASON. We're talking a 56 HP difference with minor tweaking.
See the attached specs from IS F for the RC F debut @467 HP
https://global.yamaha-motor.com/jp/d...wse/51gs01.pdf
Joe Z
Timing is everything- IS500 now looks more attractive than ISF did back in the day as there is nothing quite like it from other automakers. New models from BMW and MB are not as appealing imo.
#353
#354
Pit Crew
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Lexus fans will always want more from the company, and I think it comes across as complaining when in actuality it’s just enthusiasts wanting more bc they know Lexus can do it if they chose to.
#355
Lexus Fanatic
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Seems like the only way people would have been happy about this car is if Lexus put the 4.0L V8 twin turbo from the rumored LC F in. Isn't that engine cancelled now?
What exactly did Lexus need to do to satisfy everyone? I'm directing this question at Joe Z, gengar and even LexsCTJill with the "ancient" engine non sense. I think EZZ would even trade in his Model 3 for this.
What exactly did Lexus need to do to satisfy everyone? I'm directing this question at Joe Z, gengar and even LexsCTJill with the "ancient" engine non sense. I think EZZ would even trade in his Model 3 for this.
This is better than nothing, but it’s just an empty gesture sadly.
#356
Pit Crew
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An all new IS based on the TNGA platform this generation would have been a start. A commitment to proper RWD platforms and remaining a player in the segments they’ve always been, which would have involved a new GS and developments of RWD based crossovers. Development and growth in powertrains.
This is better than nothing, but it’s just an empty gesture sadly.
This is better than nothing, but it’s just an empty gesture sadly.
new IS wasn’t a completely new car to begin with so it makes sense not to half *** the refresh with an ISF but instead give it the v8 and retain its competitiveness in the ridiculous horsepower wars every manufacturer is engaged in.
I actually prefer the v8, I’m sure others do as well and I don’t think it needs more power.
#357
Lexus Test Driver
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Originally Posted by Tom44
I wouldn’t call it empty.
new IS wasn’t a completely new car to begin with so it makes sense not to half *** the refresh with an ISF but instead give it the v8 and retain its competitiveness in the ridiculous horsepower wars every manufacturer is engaged in.
I actually prefer the v8, I’m sure others do as well and I don’t think it needs more power.
new IS wasn’t a completely new car to begin with so it makes sense not to half *** the refresh with an ISF but instead give it the v8 and retain its competitiveness in the ridiculous horsepower wars every manufacturer is engaged in.
I actually prefer the v8, I’m sure others do as well and I don’t think it needs more power.
#358
Lead Lap
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It is a little crazy to think that the IS500 has a V8 and the LS500 doesn't !That is quite a twist for now...haven't kept up with the rumor mill but it seems like they gotta offer some kind of V8 powered LS variant too, no?
#359
Lead Lap
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They mention the brakes are a little bigger but given the weight and hp of this car I hope they put some decent brakes on this car. With true F car at least you are getting brembos but to include such an upgrade adds more $$$ but braking is important.
#360
Lexus Champion