variable valve engine comparo

[rion]

and yes... VTEC has just two cam profile. nothing spectactular. once the rpm hits 5000rpm (and assuming that there is enough oil pressure & a warm engine) it'll change to the more aggressive cam.

that is also what I LITTLE understand about it. I am not sure but I read that is why people use racing chip for their Vtec to make it aggresive from the start. meaning a factory tuned Vtec is intentionaly designed for Economy...

probably that's why there is the CVT. so you can tune it for Sports or Economy for yourself right?

not an Engine Expert, but in Movies, Games and real Test videos, mas na-uuna po yung Nissan GTR Skyline. I have no Idea what kind of engine design ba siya... basta 2.7L :lol:

Never heard about fairlady. Hindi pa ako isinilang non.

Ako rin, hindi ko pa narinig yan until I watched Tokyo Drift, that's the "Orange Car" ni Hang...

http://en.wikipedia.org/wiki/Tokyo_Drift#Featured_cars




ako rin noon, My world revolves around Toyota and Honda only...
napahiya ata ako, walang Toyota at Honda sa Tokyo Drift...

[ferdine]

ako rin noon, My world revolves around Toyota and Honda only...
napahiya ata ako, walang Toyota at Honda sa Tokyo Drift...

Tokyo Drift? Ito ba yong movie? Haven't seen it yet. But I had a video CD of a famous Japanese race car driver filmed live teaching audiences on how to do drifting. It was actually a documentary/tutorial film and if I can still remember it right, he was using a Toyota (was that a Supra?) -am not so very sure now.

[ferdine]

Ako rin, hindi ko pa narinig yan until I watched Tokyo Drift, that's the "Orange Car" ni Hang...

Mazda RX-7 designed by Veilside Orange/Black 1994 Han[9]
Nissan Fairlady 350Z Gold 2004 Morimoto [6]
Nissan Fairlady 350Z Black/Gunmetal 2002 D.K.[8]
Nissan Fairlady 350Z Gold/Black 2002 Morimoto [10]
Nissan Fairlady 350Z Blue/Silver 2003 Tea Hair[11]

The Veilside Fortune body-kitted RX-7 driven by Sung Kang's character was originally built by Veilside for the 2005 Auto Salon but was later bought by Universal and repainted (the original was dark red and not orange and black like in the film)[27].

Notable drifting personalities Keiichi Tsuchiya, Rhys Millen, and Samuel Hubinette were consulted and employed by the movie to provide and execute the drifting and driving stunts in the film.[28] Tanner Faust, Rich Rutherford, Calvin Wan, and Alex Pfeiffer were also brought it when it was revealed that none of Universal's own stunt drivers could drift.[29]

Kaya hwag maniwala lahat sa movie.

[ferdine]

Orly... yup... turbo yung GTX. just pointing out that "technology" per se is not just the realm of Honda.

So ano bang pinag-uusapan natin dito? variable valve timing which is the subject o turbocharging?

[orly_andico]

ferdine,

i think the issue is you come off as too much of a honda fanboy. of course that will rub people the wrong way. honda never has been at the technological bleeding edge.

it is accurate to say that honda brought variable valve timing to the masses. and that's it. they were neither first, nor are they the best.

[ferdine]

ferdine,

i think the issue is you come off as too much of a honda fanboy. of course that will rub people the wrong way. honda never has been at the technological bleeding edge.

it is accurate to say that honda brought variable valve timing to the masses. and that's it. they were neither first, nor are they the best.

Surprise! Orly and mazda are both the same guy. Now I know. I have my opinion about variable valve timing and I would like to convince the first poster about the merits of i-VTEC. I stick to the argument and backed it facts from wikipedia which is quite a good resource for educational purposes. If I'm a Honda fanboy and rubs off people like you, it's not my fault. Ika nga... talo ang maasar. He-he-he-he-....

Kaya nga cguro liko-liko pa kayo hanggang sa nakarating na kayo sa
rotary na admittedly, I don't have that kind of motor. But it's not a rocket science na puede lang sa mga elite groups like yours.

Kaya nga I respect whatever opinion you have about Honda's not in the bleeding edge. Opinion mo yan and I can't do something about that. Problema kasi kung hindi mag agree ang opinion ng ibang tao sa inyo, ibabasura nyo dahil kayo lang ang tama.

[the_wildthing]

I stick to the argument and backed it facts from wikipedia which is quite a good resource for educational purposes. If I'm a Honda fanboy and rubs off people like you, it's not my fault. Ika nga... talo ang maasar. He-he-he-he-....

Sorry to burst your bubble boy but Wikipedia isn't exactly an authoritative resource. Anyone can write anything on Wikipedia.

[OTEP]

You can't do much about someone who has blind faith in a car company.

My sig may say Mitsu and I do have my preferences but I do not put all my eggs in one basket (or in this case, a car company).

As for my opinion, Hondas are way overrated in may aspects. I'd rather take the underdogs. But that's just me.

[the_wildthing]

I guess my question to always_yummy is, on what terms/criteria is the comparo? Is it about which is better technologically?

[slicker_boi]

You can't do much about someone who has blind faith in a car company.

True true. We have here ferdine who's faithful to Civics no matter what. There's also a certain self-proclaimed cute*ss car guy who for some reason has a fetish for Sentras. There's nothing wrong with liking a particular brand, but facts are facts. One should accept the weakness of the brand he likes and refrain from pointlessly defending it.

[alwayz_yummy]

sa akin lang, honda is good naman, pero way too madami na sa road natin, which somewhat i dont like...b16a, vtec, parang word of "filipino" mouth na yan...

pero in fact, 2 cam lobes lang ang vtec, MIVEC, 3..pero needs high octane rating. 4age silver and black top is not as noisy as honda b-engine..now k-series engines na ata) personally, i havent seen a SR16VE, nadidinig ko pa lang siya, and 2 years ago ko lang siya nalaman.. ang alam ko lang is SR20VET! the first turbocharged VVT engine, 2.0L rated stock at 280hp!

by comparision, nissan makes first in in VVT technology. just like in CVT(continuosly vaiable tranny). actually, a honda fan again will say una ang honda, well infact, JDM sentra and serena models 1998 is already using it, and ga16 and sr20de mga yun, not 1.5 and 1.3. take the murano, v6 3.something, pero CVT, mga year 200 pa ako nakakita ng USDM models, na happy to say pareho dito...pero OT na yaung CVT..VVT topic ko.

purpose ko nito, is research. if ever i will get a honda, ayaw ko ng kapareho ng typical honda fan..mitsu, subbie, mazda and nissan fan ako,e...recently lang ako naconvert sa toyota..honda, well, CR/HR-v and odyssey, lang...but trying to pit in somehow...may honda tuning ako na libro dito, vol. 1, includes swapping guide from civic EF-EK, inluding CRX and del sols, accord 92-2000, also prelude..kaya madami na akong guide for honda..but how does the other VVT engines pit in against the loud honda vtec?

ang isa pang gusto ko sa VVT engines, mostly NA siya, no turbo lag, and fast spinners: 7000+rpm redline... may VVT engine ba that goes 10,000rpm(max) honestly.

pansin nyo mga recent threads ko, ung civic shuttle, mazda astina/lantis, wira hatch, corolla wagon consider ko din, cheap wagon/hatches..may maxima din ako(na coconvince ko nalang si mami na wag ibenta, kasi nadesisyonan na nya) swapan ko sr20ve/sr16ve..20det, parang common na masyado, pero ok din.. e..

*loud-->di yon tunog ng makina, loud i mean is yung masyado siyang bukang-bibig, lalo na ng mga wanna-be and boy racers..i'm glad dami inputs about this here. locally avail vvt engine din habol ko (honda b-, 4age20v black/silver), MIVEC, ung SR16VE baka walang makasagot kasi uber rare dito sa atin yan, sr20ve, ganun din ba?...of all VVT engines here sa atin, nissan is the most silent one. parang tipong enthusiast talaga nakakaalam..

[nugundam93]

nabanggit din as ot yung cvt...

tagal na subaru nagtry with a cvt, sa 1980 justy ata yung may cvt. heheh.

[alwayz_yummy]

sure kasi na local honda fanatics will also brag CVT as their first.

i never expected these replies nga e...just keep them comming.. also, para din ito sa mga gusto malaman kung anu ang VVT engine advange/disadvantge between the manufactures, not just honda/toyota/mitsu...so including din mga european & american cars(if the americans use VVT..)

[nugundam93]

ehehehe.

hmmm...i have never heard of any pure american engine that used any vvt system. meron nga ba?

back when the nsx surprised ferrari, they responded with the f355 and when asked why they did not use a system similar to vtec, they said that their 5valve/cyl system was superior to the vtec. read it in a road and track issue where they first tested the f355.

[nugundam93]

that is also what I LITTLE understand about it. I am not sure but I read that is why people use racing chip for their Vtec to make it aggresive from the start. meaning a factory tuned Vtec is intentionaly designed for Economy...

not an Engine Expert, but in Movies, Games and real Test videos, mas na-uuna po yung Nissan GTR Skyline. I have no Idea what kind of engine design ba siya... basta 2.7L :lol:

they probably just lower the vtec activation point...?

the GT-R uses a 2.6L twin-turbo straight-six. aka RB26DETT.

[nugundam93]

bakit hindi dinala ang mga engines na yan dito?

ang gagaling ng Japs when it comes to extracting power from NA engines.

hindi ba ferrari owns the highest HP/Liter at the moment? not sure kasi ako eh.

pero true, the japanese can pull some big numbers too.

***edit***

FXX vs '06 S2000: 127.75 bhp per litre vs 125.19 bhp per litre respectively

[alwayz_yummy]

alam ko nga non-vtec ung 1st batch ng nsx....kaya ko dinugtungan ng "if americans use VVT"...knowing them.... nothing replaces displacement ika nga...pero european and japanese, including koreans use vvt in almost new engines nila...

rb26dett ang gtr, pero non-vvt pa to,rigth, just like 6a13 ng mitsu, only v ang mitsu...IS200 i think is a vvt engine na..straight 6 2.0/3.0L RWD!

hay the advantage rich oil-consuming countries!

[nugundam93]

right from the start eh vtec na yung nsx. iirc ito yung 1st mass-produced application ng honda f1 vtec.

lemme recheck the tamiya 1/24 NSX manual. andun yun eh. :D

[alwayz_yummy]

may nsx ka pala!

subbie lang sa akin,e ung black 22b WRC!

may bad pala kung sakali....cheap ferarri and nsx,e..

[nugundam93]

i actually have that poor nsx in pieces. i painted it in car paint kasi, it went bad, so i soaked it in thinner. ayun, lumutong yung plastic and as i was scrubbing the paint off, it disintegrated

ehehehe OT post. :D