Supermuku

So, have any of you folks heard any information on the IS200t? One thing im hoping on is that with the turbo engine the car will be lighter and not so nose heavy.

IS1911

I rather have a normally aspirated engine than a turbo. I've owned turbocharged cars in the past and they have unique issues all their own. For instance, it's important to know exactly how the impellor bearings are cooled. Some systems use the engine oil while others use the coolant. If the bearings are oil cooled you must let the engine idle for a minute or two after a hard run before shutting it down to make sure the oil has a chance to cool the bearings. Another issue is that turbo cars go through exhaust systems quicker than cars with normally aspirated engines. There's also turbo lag although I will admit this isn't anywhere near as much of an issue as it used to be a decade or so ago.

TheShaddix

How is cooling off your car an issue at all? In fact, this logic should apply to NA cars as well - if you ran your car hard, drive it mildly for a minute before turning it off. I've never had a time where I'd drive my car hard and park the next second... And turbo lag, however minimal, isn't much of an issue to most people. Try to punch the IS around 2-3k rpm in 2nd and higher gears, see how much response you get there... Not much... With a turbo at least it pulls you out of that slow rpm zone.

I'd much prefer either a V8 in the IS, or a turbo 4 with around 250 hp and similar torque numbers. The current v6 3.5 is neither here nor there, just a whiny engine with low torque.

metaleckz

iTrader: (9)

Why not is350t best of both worlds like 335

FinaLpeace

You know, the IS350 and GS350 will keep its engine for at least 3 more years or perhaps until the next generation come. Why do I think so? The RC F have just been announced to go from 0-60 in 4.4 seconds. That's only 1.2 seconds faster than the IS350. If the IS350 were to get a turbo charge engine replacement or something faster, then the RC F and the rest of the lineup will need an adjustment. For the IS250 it's easy just to make it a second faster since it gets to 0-60 in 7.7 seconds. I'm glad I bought an IS350 instead!

drbazing

I agree with keeping everything at NA. BTW 1.2 seconds is a lot, not gonna shy out of that. Basically by the time RCF hits 60MPH, it would be about 2.5-3 car lengths ahead of the IS/GS. Anyways, who cares about 0-60 MPH stats nowadays? I don't think it's a very good test because not all of these cars has the same traction. Maybe 5-60 MPH, then it can get my attention. I'm more interested in how much Gs it can generate in a turn, breaking abilities and also 45-100MPH stats. For daily driving, only care about either 35-100MPH or 65-100MPH times.

Reasons I got the car (IS350F) are how reliable Lexus/Toyotas are, looks aggressive enough to turn some heads, it's got enough ponies to back me up at certain times, luxurious enough to where I won't be whining about things.

Back to the topic. I think it's going to be interesting putting a turbo in the Lexus line while also not shying away from reliability, so I expect low boost. I believe it will sell plenty.

SlangBlade

Rumors are a late 2015 release as a 2016 model.

As for the turbo comments, if Lexus wants to keep up with BMW/MB/Audi, they need the 2.0 and 3.0 FI motors. Even with the M/RS/AMG lines, most of them are FI. Better mileage, more power. I didn't care to wait and I share concerns about FI motors, so I jumped on the 350, but NA motors are going the way of the dinosaur - even GM knows this. I'm sure the Toyota engines will be more reliable than the others once they get the kinks worked out. Toyota is also going to own the entire process too and not outsource their turbos. I'll still wait a few years before I'd buy one, but that's where things are going.

Supermuku

I agree with the low boost. Just like the how the engine is setup in the NX, based on reviews it seems like the engine does not have the punch of the 2.0 turbos from BMW and Audi. I expect the same type of performance but better in performance and mileage then the 2.5 V6.

tea

[QUOTE=Supermuku;8718996. I expect the same type of performance but better in performance and mileage then the 2.5 V6.[/QUOTE]

Expect the same type of performance but better in performance...?

I think it will only be marginally better. I'd still prefer the smoothness and quietness of a v6 even if it slower

salvadorik

iTrader: (1)

I think Supermuku meant powerwise 2.0t will be the same as 2.5 V6 but power output compared to MPG will be better in 2.0t than that of 2.5 V6.

I really would love to see if Lexus can come up with something like 3.0t with 300hp and 300ft to replace 3.5 V6. It would be almost certainly a win win replacement. Lighter in weight and better MPG while delivering better performance. Audi's 3.0 supercharged engine is a bullet proof motor and if they can do it I see no reason why Lexus can't. A FI engine should not compromise Lexus's well known reliability if done properly.

LH1

I remember in some thread a while back I asked if anyone had heard anything about a replacement or update to the 3.5. CL members like Hoovey, Joe Z and others with great credibility said they've heard nothing. I'm hoping to hear something at the LA or Detroit shows. The 2017 MY might be when they update but who knows?

SlangBlade

I'd bet it's in the works, but probably 2-3 years out.

FinaLpeace

As I've mentioned, I don't think the IS350 would get a replacement for awhile especially with the spec of the new RC-F.

Current Lexus performance lineup 0-60 times:

RC-F: 4.4 seconds
IS350: 5.6 seconds
GS350: 5.6 seconds
IS250: 7.7 seconds (replacement in 2016 by IS200T: possibly 6 seconds range)

If the IS350 engine gets a replacement then the rest of the lineup above would need a faster engine. Seeing how the RC-F just came out, Lexus probably wouldn't replace its engine for awhile.

I'd say turbo conversion for the whole lineup may start possibly closer to the next generation refreshment in 2019-2020ish, since they probably wouldn't want critics to criticize bringing over the "old engine again"

We do have to understand that Lexus have to be extremely careful when developing new engine and especially with turbos because they do not want a fall on their reliability reputation. They are taking baby steps from their lower end lineup cars first, ex: NX and IS250 (IS200t).

a790

Don't be surprised if you see a 3-3.5L turbo and around 330-350 hp by 2016/2017.

Mercedes C400 can be had with a 3L V6 turbo and 329hp. BMW also has the 3L turbo and you can expect them to give it a bump to around 320-330 as well.

Lexus knows they need to make some changes to the IS lineup to keep it competitive as their German competitors step their game up. Not to mention as the Cadillac ATS and Infinity Q50.

drbazing

I don't think it's still a good idea to turbo the Lexus engines. As FinaLpeace said, "they do not want a fall on their reliability reputation", and I couldn't agree more.

Just let the aftermarket scene do the tuning.