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why does VTEC get so much attention?
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Zenmervolt
Elite member
I prefer VARIOCAM. 😉
ZV
ZV
geno
Lifer
Variocam is supposedly very nice, but VTEC was better IMO through the mid-90's (back when Variocam was just a cam phasing system if I recall) 🙂 From what I've seen though, Variocam has come a long way and is now worthy of being a part of a Porsche 😀
Dual-Vanos deserves a mention as well 😉
KokomoGSTmp
Senior member
Properly fixed.
VTEC is mainly used for a smoother running more fuel efficent car without giving up normal everyday performance.
I like the Valvetronic system from a engineering standpoint... but nothing beats forced induction for power production, other than mebbe chemicals.
To me you are just showing your total lack of knowledge by using the power per liter argument when referring to small engines. To an uneducated riceboy, it's "impressive engineering". To a more knowledgeable person, it's just very basic physics. Small engines can make more power per liter because they rev higher due to their smaller parts.
Honda's Civic Si has more power per liter than the NSX. Do you really think that Honda saved their best engineering for their econobox instead of their flagship? Why does it have more hp/liter then? And their CBR600F4 has even more power per liter than any of their cars. Why do you think this is?
A Yamaha R6's 600cc engine makes over 100 hp, so it has 166 hp/liter. And my model helicopter's engine has way more than that. An RC car's little 1 cylinder engine can rev to 40,000+ rpm and have 600+ hp/liter. Is it due to impressive engineering? No. Is it small size? Yes. 600 hp per liter is nothing for a tiny engine. Yet 250+ hp/liter would be extremely difficult for a 3 liter engine. F1 cars are marvels of engineering to produce the power they do. But my helicopter engine will produce more power/liter without even trying. It's nonsense to compare the power/liter of engines with different displacements. And yet Honda fanboys repeatedly compare the hp/liter figures of their engines to larger engines such as American V8's to show "engineering superiority". It's nonsense. Not even Honda's larger engine on their top of the line flagship produces the hp/liter of their low end cars and motorcycles. Learn about basic engine physics before spouting nonsense like a typical ricer.
You are a fanboy- plain and simple. You're really into cars but you know nothing about them. And still you feel compelled to spew fanboy nonsense into otherwise intelligent conversations. Stop posting until you get a clue.
geno
Lifer
Smaller motors with lighter rotating assemblies are MUCH more comfortable with higher revs and are easier to not only balance at higher RPMs, but easier to keep in one piece at great speeds, that's why a 600CC motor can rev to ~15K without reliability issues, that's not a matter of engineering, it's inherent to the motor's size. But you knew that already.
I agree! But I never brought that up, I just said a reliable 240HP from a 2.0L motor is impressive, do you not agree? My argument is that Honda made 100HP/L common and as you well know, that's a well known benchmark in the industry (no matter who makes what argument, people pay attention to that stuff), and for that reason VTEC is more well known than, say, VVTLi
geno
Lifer
No need, I saw 😉
Listen, I'm not a huge fan of HP/L like you're trying to make it out to be, but I have to respect it. I've driven an S2000, they're fun as hell to romp on. Would I rather get that 240HP in the form of a 3.0 in a Z4? Absolutely. But that doesn't mean I can't be impressed with the fact that Honda gets 55HP from a .5L Cylindar (er, the new one's are 2.2's right? So that's .55 then, whatever 😛), or BMW got 333HP and some damn nice torque from the E46 M3's motor. It's perfectly attainable, anyone can build a motor that revs to high heaven and make 150HP/L if they want to, but for a manufacturer to build something that outlandish and stand behind it enough to mass produce it, that's just cool to me 🙂 That being said, I'd rather go back to a turbo 4 cyl than any honda 4 cyl 😀 (I drive an Integra now, used to drive turbo Dodges, cheap speed)
They have nothing eles to brag about so they brag about VTEC. Most Honda owners don't even know what a fast car is all about, because they have never driven one. Torque makes the car move, Hondas have no torque...so they don't move real fast. VTEC is a way to get more out of a little engine. Real engines don't need gimmicks like VTEC to make power.
JulesMaximus
No Lifer
There's only one explanation. Honda fanbois are easily impressed.
JulesMaximus
No Lifer
Yeah right...when's the last time you heard a ricer brag about the sweet mileage he was getting? :roll:
And I can build a non variable timing engine to smoke it's ass. Variable timing is a way to compensate for lack of displacement or to improve economy. I agree with the economy part and it could be usefull in a lot of engines for that but if it has to be used to make up for an engine's inherent lack of torque then it isn't going to help alot.
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