mazda skyactiv 2.5
peak torque : 250nm @ 3250rpm

optima GT
peak torque : 350nm @ 1400rpm - 4000rpm

Don't know where fixed or guaranteed....

I feel very sorry for the wastegate in your engineering, really wasted....

You really want to add some more mind blowing, revolutionary, industry shaking "memorable" statements into your belt?

All i said was already properly backed up. You say i copy paste google, tapi lu tak erti pun to even prove your point. Understandable, because there is no source to prove your logic, but still so proud about it to misinform people...still cannot believe that your "engineering" is merely just yours. Oh wait....it could be something that groundbreaking?? It's alright, you can and you should continuously win in your argument. Maybe just I can't brain it, because i'm just a small ciku compared to your vast 40 years industrial "insider" knowledge right?  :thumbsup:

Now i start to understand why you and your gang are in sales and marketing, so adept in turning falsehood into something "quite reasonable" or force a statement in, just what was needed for the job! You being the most senior among them already like that, those younger ones in your gang should be even "better" i guess.  :thumbsup: Thankfully not in any higher regional or international post (or worse in technical/engineering department), or i just can't imagine the embarrassment.

Oh well, i guess i'm quite foolish because :
Sorry Kenny to drag you in, but i suddenly find this inspiring. A bit late for me to realise this though...

followed the thread till pg 13 silently. finally sifu kenny floated up
from optima GT tered become turbo discussion tered. ayam having lots of fun

By the way, who had test drive this car? I am quite eager to try it leh..

that's true. Anyway, i took master jay advice. Ditch my K3 long long time ago so that i dont butt hurt in RV. Now, i'm a proud owner of jap car. I guess i change to jap car due to the superior strategy offered by jap car maker. How to resist it?

Pretty telling for someone with revolutionary, industry pioneering, earth shattering statements of facts :
1) the +1 gear behind 4AT = 5 speed AT
2) 50kg anti roll bar
3) the everlasting olfactory goodness of conti car interior
4) the oh so light that a baby can lift the frame
5) mercedes has no assembly plant in thailand

Now can add :
- sonata new rise die die is whole new model even when hyundai HQ say it is facelift
- turbocharger will "activated"
- wastegate actually opens before turbocharger activates

无敌最寂寞...invincibly jahil 
Really 1000% totally "convinced" of this  :thumbsup:

I'm sorry!!

The graph ngam la! 

You guys came at the right time to cheer wkc5657 up after his mythical claims got busted. Worst day of his life when owners of turbocharged engines proved him wrong. Compared to you and dares, he twisted story really fast after caught red handed. Without 2 of you here, he won't post anymore.

As for the vvti, toyota researchers done testing on timing chain vs timing belt on its first experimental vvti engine designed for the Altis 2001. The result, vvti operates better with timing chain. You can compare toyota timing chain vvti vs rival cars with timing belt operated VVT, that's why Toyota could tune higher yet getting better FC.

you want to say all cars interior smell the same?

I am compelled to ignore the rest of your "lecture" to point this out.

Do you know what happens when the wastegate open?

Just wanna make sure it's not a new invention ma, wastegate that open to "activate" tebo.

Who knows it's a new tebo design by him, the turbine is on the other side of the wastegate

 

OK so

- turbo wastegate is used to dump excess air.
- There is a valve in the plenum that opens and closes the turbo intake side, which activates/deactivates the turbo.

Got it

wkc5657 k3nnykl82 u sellman got pay attention in class anot!?

       

@K3nnYkl82 reply together

You already twisted my comments by posting your own made up assumptions on things that I never specified such as location of layout. You really don't know or pretend don't know. Same old dirty politics strategies where few of you posting twisted points saying these are from me trying to make others believe what you all said are true. However, facts vs rumours and false twisted comments, facts always win.

If you're just googling and read from layout or diagram, maybe that is how you misinterpreted turbocharger layout like wkc5657 earlier. If you guys mod your cars like what you guys claimed in your twisted comments, think the air intake probably failed to suck air in causing engine stalled. I'll sure laugh at you ah Beng modified car wrongly until mati engine on roadside.

Conventional AT planetary gears system is really not as straight forward as popping one gear in. Gears size relation with gear ratio is extremely complicated. Actually add one full planetary gear set give 2-3 additional gears (including reverse) depending on who control the sun gear, who control the ring gear, and if sun gear and ring gear move in same direction. Mind blowing stuff, go take a look.

Exhaust side and intake side of a turbocharger are completely isolated except one shaft for god sake. Air don't flow between both housing. Exhaust gas push the the turbo to spin from the moment engine start, it spin really fast at idling. Depending on the turbo 20,000 rpm is common at idle. Through the shaft, it spin the intake spool that act as a pump to push more air into the engine. Again since the idling. The so called "turbo activate" is not an physical switch on, it is merely a increase torque perception feels by the driver when the turbo spin faster enough (which translate to higher boost and higher torque). BOV or wastegate active then the driver lift of the throttle. With sudden resistance that block the high pressurized air from going into the cylinder, the back pressure goes back to the intake turbo side which significantly slow down the turbo speed and create excessive stress to the shaft connecting both side of the turbo. This will either break the shaft or the turbine blade. The solution is BOV either mechanically valve or electronics controlled like the Civic 1.5TC. BOV used to be dumping the air out to atmosphere, but in today strict environmental friendly way, we dump they back to the intake after the filter and before the intake side of turbocharger.

Yea, there is a valve, but the way you interpret how the valve function is completely off. I serious don't care your perspective toward Korean car, but please get the turbo working principle right.

Gosh, I guess I just joined the F&F political party.

Cannot just simply agree without any challenge.

Just want to correct your mistake. Wastegate don't rely on RPM to work it works based on boost pressure.

You agree in sarcastic way together with dares. Trying to divert me away from car talk that will make wkc5657 and his members cry is it? Since this is Optima GT thread, you are free to compare this to other D segment namely Camry, Accord, Matsuda 6, Passat or cars that are priced around that range. Both of you not tied to Korean car company unlike the few guys , you can post any flaws, pros and cons.

New Camry launching in America followed by new Accord. Both beats Sonata & Optima in FC sending Korean car sales slumping in America followed by whole world.

Do you think the local korean marketing with brains that cannot understand how turbocharger works can bring up the Korean sales without spoonfeeding from car enthusiast gang anymore? I see them losing more and more shares ever since the group of car enthusiasts have joined prominent Japanese companies.

Put aside Toyota Honda Mazda, the Korean marketing failed against VW that was bogged down by DSG gearbox and also against boring with weak outdated tech Nissan. Now Subaru also overtaking Korean cars.

Explain so much I too bodo to understand.

Why don't u google a diagram that has what you described, easier lah.

Wah....playing the trump card that he kept to "laugh us off"...VIS...fuhyo :
[attachmentid=8988072]
http://www.gtfours.co.uk/what/tvis/tvis.htm
https://en.wikipedia.org/wiki/T-VIS
This obsolete liao lar.....where got any modern diagram will show this? None of the modern Toyota engines apply this anymore.

Did you try thinking why isn't this implemented now since it was so ground breaking? ....the answer is very obvious, and you mentioned it yourself many times before indirectly. Didn't you realise that??

40 years of industry experience shouldn't be a difficult to figure out.
Haven't we tried? Tried doing it in a polite manner, kena categorise as fanboy immature; tried explaining in long length; kena tembak kantoi; give alternative opinions, means you work for the koreans; post video don't believe; show diagram, consider fake news.

He's really good at spec analysis, and maybe pretty good at sales and marketing tactics. But so much so in the way that is distorting, undue amplification, misinforming, misleading and at time downright ridiculous. It is so damn hard to believe that someone with this level of automotive knowledge is a strategist.
No need fly off with jetpack, if he hantam you with what you say, some serious reflection on his end is seriously needed.

Malaysia brochure, website specs for lancer GT 20017-2012 stated clearly kerb weight at 1385kg. Lancer GT and Lancer GL chassis bearing different codes. I can tell you that you can never 100% convert your Walancar into Lancer GT 2007-2012 unless you replace entir chassis of your inspira that is based on lancer GL chassis. How old were you during 2007-2012 btw? Sounds like you were still in school as if you weren't following up nor knowing anything about Lancer at that time.

I showed you autoworld lancer 2012 specifications too where the kerb weight shows clearly 1385kg. That was what shut you up back then. There is lancer club where many lancer GT 2007-2012 enthusiast owners there that can tell you the kerb weight. How come never asked after so many years, too ashamed coz you own fake cetak rompak walancar? FYI, you're not referring to lancer chassis code. People talk about chassis, you go engine, some more P1 coding? Aduhai...

Malaysia brochure, website specs for lancer GT 20017-2012 stated clearly kerb weight at 1385kg. Lancer GT and Lancer GL chassis bearing different codes. I can tell you that you can never 100% convert your Walancar into Lancer GT 2007-2012 unless you replace entir chassis of your inspira that is based on lancer GL chassis. How old were you during 2007-2012 btw? Sounds like you were still in school as if you weren't following up nor knowing anything about Lancer at that time.