What is VTEC and How Does it Work? - EricTheCarGuy
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- Опубликовано: 1 окт 2024
- VTEC or Valve Timing Electronic Control is a system that's been used by Honda in passenger cars since 1991. I believe the 1991 NSX was the first production vehicle to get this system. It has since been used in several other Honda vehicles. Late model VTEC equipped vehicles use the iVTEC system which also changes cam timing as well as lift and duration. The system is designed to give you the 'best of both worlds'. You get to switch between 2 cam profiles. One for fuel economy, one for performance. A lot of people think that when VTEC kicks in you get an extra boost of power. Not true in my experience. It does however extend the torque curve to give you more performance after it does switch over. There is no set RPM where VTEC switches. The computer looks at several variables and calculates when to activate the VTEC solenoid. It's a cool system and for the most part rarely has issues. The most common issues I've seen with VTEC are the result of low, or incorrect oil viscosity. So if you have a VTEC engine, keep the oil topped off and make sure you use the viscosity listed on the oil cap. The animations are courtesy Honda Motor Company, thanks guys.
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I have honestly looked at other videos that are 10-15 even 30 minutes long and they have animations and pictures and examples. It confused the life out of me. I watched this 2 minute video and I finally understood. Simply, informative, and short. Bro you are the man. Subbed
I swear I just saw a video of a ricer saying VTEC was very tall engine cooling x'D it was actually quite entertaining
I just finished watching that
gaskings channel, ricer bullshit or shit talk I think
That's the video that lead me here to find out what it actually meant.
😂😂😂 same here
But how many vtecs does this give? I need at least 4 vtecs in my honda for maximum VTEC power. I'd prefer 8 VTECs but I understand this is dangerous because it can cause tornados
My Ford Explorer has more vtecs than a measly little 4.
Haters will hate
Most people dont ever understand what honda is about. You can make great power from the same engine in different confidurations. Let me know when your tahoe breaks the 7s 1/4 mile.
V-TEC when millions of unicorns fart simultaneously to give a power boost.
mightaymouse You're not even saying it right its Vtec not V-TEC.And yes that is true for SOHC Vtec motors as these are not designed for high performance but rather fuel economy. The DOHC versions of Vtec are for high performance and they are AWESOME performing motors because of it, and also because they are high compression engines.
Marc Kolz Clam down there buddy its only a Honda.
catless exhaust Yeah sure whatever. Honda engines are as ingenious as ferrari engines, made with the same perfection. Its just that most of them are front wheel drive.
Marc Kolz Your trying too compare a Ferrari to a honda?
catless exhaust Honda aint worse than Ferrari in any way, except for luxury - something Honda have never been devoted to. And if u think that's enough to edge Ferrari over Honda u can check the new NSX. :)
0:37 VTEC just kicked in, yo!
*it took 37 seconds to kick in :D*
All these butthurt comment's.They dont have idea how VTEC work's just came here to hate.......xD
Eric, I've seen many other videos to understand vtec system, but your video explained it in seconds and much better than others. thank you!
A lot of people make fun of Honda but never realise the engineering and innovation they gave to the industry.
I like my Honda. It does a great job of CUTTING MY GRASS!!!!
+Frank Gonzalez take off the GR off of grass, enjoy :)
+derpy troll take off the derpy of derpy troll, enjoy. : )
Frank Gonzalez take the derpy troll out of derpy troll, enjoy :)
And my Lamborghini does a fantastic job PLOWING OUR FIELDS!
Rather driver a Honda than know the bank own my vehicle
Love me some VTEC although I drive a DSM. Still love Honda, the sound of those engines though are amazing. Honda has got a lot of haters, they don't care though lol.
All the turbo lag with no turbo hahaha jk I have a s2000 so when I hit vtec you can actually feel the little boost. F20c ftw.
enos ruiz Nice XD
Timmy Turner you could always wish for whatever car you want :D because of your fairy god parents.
enos ruiz Ahahaaaaa! True!
+Timmy Turner If the stuff you put down the road wasnt good.... it wasnt worth hating on.
very tall engine cooling
im gonna keep on watching this until i get it.
Did you get it yet ? :P
yeah, when I was going in the high revs i was wondering whether i hit vtec or not. its hardly noticeable since I drive the base model RSX, for emission reasons its at 2200rpm. (based MPG's)
I hit 5 rmp stock
dragonblade101 thats not how you say it, btw a car idles at around 900RPM
I always thought Vtec was a sticker that ricers put on the back and side of their cars to show other people they have 300+whp... Guess I was wrong.
Lol! Or 115 hp
Nothing with VTECH comes stock with 300 hp.
oh God, it's turbocharged
+spookypunky ACCORD J37 V6 engine comes with 305 whp stock. And it's NOT turbocharged.
Which year?
Vtec happens when two gay guys start a relationship..
TDI driver ...
I look for my shotgun.
STI driver*
Mustang driver or own a v8????
I just said STI driver lol ^
Will it fit my Honda?
estebanquito356 Mighty Car Mods. Will it fit my Honda🤣🤣
estebanquito356 interesting question.
It already in your honda
estebanquito356 it's a good thing I was on the toilet because I laughed so hard I actually shit
value timing electronic control....yo!
Haha I'm a die hard Chevy guy, but that's actually pretty cool.
ILMatt Believe me, the Quad hits so much harder and sounds way better. But yes, I see you're point.
VTEC was made to help smaller displacement engines climb mountains. You can't change the amount of air being delivered without forced induction but you can change how it delvered(less restrictive, speed, etc).
Larger cam-lobes allows the inlet valve to be opened for longer allowing more air inside the combustion chamber whether it be forced inducted or not .
thank you. got a 05 acura RL an always wonderd what the vtech ment..thanks again
Very similar to a jake brake on a semi truck. There's an extra rocker arm on the rocker shaft and when oil is fed to it say when you're going down a steep hill the rocker arm which was in an idle position to start is now being driven by the lobe that is assigned to it. Rather than operate the intake valve it operates the exhaust valve. It holds the exhaust valve open ever so slightly. While this is taking place fuel is cut to the cylinder and the engine being the air pump that it is now is in free wheel mode. Being that the engine is connected to the transmission the road wheels are what keeps the engine turning. Since there is no fuel to burn the compression stroke is effectively a very restricted exhaust stroke at this time. The weight of the vehicle works against that resistance and slows the vehicle without use of the service brakes. Pretty neat and it makes a hell of a noise. Cheers Eric I appreciate what you do here keep up the good work. Stay dirty my friends
The new ISX cummins will even open multiple exhaust valves on different culinders and allow the escaping air form one cylinder enter another cylinder and compound the force. Along with a variable geometry tuebo, I've seen the ISX's I used to run come up as high as 35 PSI of boost on the jake brake operation, and as high as 45 PSI on the turbo when pulling hills.
I work on isx day in and day out they are fun to watch when you have the valve cover off and you engage them
Guys who ride around with the jake brake all the time...are they doing damage to the engine.
no matter how much people slate honda's i like the stock type r the hatch is sweat to own and drive coming from dodge owner of a 5.7 charger rt hemi love this car but is not as nimble and nippy to drive still want to wack twin turbo on my vtec yo would be epic lol but honda's are great bang for buck and don't deserve criticism because rice is not stuck to one make of car
Honda stuffed a bunch of unicorns inside the engine and when you hit around 5500rpm give or take they all fart at once
VTEC: You can have all this lag, and if you call now we'll give you NO EXTRA POWER!
imagine a Vtec with a big turbo on it... holy shit, lag for days
What do u mean lag. It doesn't open until 6k rpm because it's a high speed cam. If V-tec came on sooner the engine would loose low end power.
Jonka Olofsson If they turbo charge it, the boost would come n around 2500 rpm and it would pull much harder than now. At 6000 rpm when the v-tec would come n and all hell would break loose. It would be to much for the front wheels.
Jonka Olofsson you can't just throw a big turbo on a car and leave it at that... you have to use the right size turbine/compressor set up on the right sized engine. No sense in throwing a huge t6 diesel turbocharger on a 4 cylinder if the 4 cylinder won't generate enough exhaust gases/pressure to drive the massive turbine wheel. (Where you get your lag) It goes vice versa, one won't slap a t2 turbo on a V8. The exhuast gases generated will spin the turbine wheel much faster than it should, you would have to limit the turbine, thus limiting your power gains, because you can burnout a turbo. Slapping a turbo on a vtec equipped vehicle doesn't necessarily mean it will have massive amount of lag. It all relies on correct tuning and the correct parts.
I have a huge problem with my Honda Accord 1.8i LS 1999 with F18b2 Engine. My Vtec doesnt work anymore.. I have no idea why. I've cleaned the solenoid and tested the solenoid, changed oil and oil filter and spark plugs, checked oil pan, no CEL also changed Thermostat (was broken), Speedo is working and all gauges are fine, Engine is warm as it should. I've done pretty much EVERYTHING but Vtec is gone :S there is no different in sound anymore as I hit 4000RPM like it used to before :S What could the problem be???... Please help me some Honda experts.. with tips.. I miss the baaaaaWHAAAAAA so much
Thumb nail looked like a Mighty Car Mods video lol.
You do a great job in your videos man... keep it up!
This video makes it seem like vtec is really nothing special. But my god do ricers act like it's the greatest thing since sliced bread. Probably because they don't know jack shit about car preformance.
+James Whyte isnt it good though i does give a boost
+Troy Soeterbroek (TroyRedstone) lol whats the point of it then?
Idiot alert
Anyone here know diesel engines?
Quite similar to a jake brake, only a jake brake don't come on under throttle.
From listening to all the riders, I thought VTEC was a purple powerband, that unleashed 300 FWHP and made a 1992 Honda Civic with only a fart cannon and cone air filter outrun WS6 TA's and the like.
Nice AUTO grand am...
Garrett Beck thanks. Its my wife's daily driver. She loves it. It is what it is..a daily driver and thats it.
You wanna make fun of automatics? make fun of my 2001 buick that is running 13's with next to no mods. Its auto too.
Garrett Beck nice fart cannon RSX-S.
I make those look stupid in my AUTO Buick with a bolt on exhaust and intake as my only mods. :-)
Umadbro?
Did not see your jake brake comment before I posted. Glad there's big diesel people watching too.
Chris Osborne it's not the fact that you'll rip him to shreds, modern sports cars are hybrid petrol/electric automatics and they are super fast.
It's the fact that you push down the petal to go and that's it.
manual owners can do all types of fancy stuff with their cars (and around corners in particular they have advantages) that make them 10 times the fun than a shitty cvt.
I think i'd rather choose when I want to shift rather than a computer choose for me.
Is it possible to lock the pins to get "non-stop vtec"?
Toda Camshafts. But they are bad for your engine.
+Michael Just apply constant "+" (electricity) to the VTEC solenoid and u are the man. But, as stated above, it is bad for the engine.
no there needs to be enough oil pressure to lock in the pin u can buy a vtec controller I'm pretty sure the lowest u can set it is 2000 rpm
wen vtec starts cutting in and out quickly what can be wrong is it the gasket on ths solenoid or something els ?
you can probably do it and no it won't mess up your car as the others stated, you'll just have a rougher idle and waste more gas
I bought a 97 civic just recently and holy shit I fell in love! So easy to work on and so many aftermarket stuff to slap on it! Forever Honda
Pretty sure VTEC=UNICORN FARTS
nah it stands for "Virtually-Torqueless-Engined-Civic". LOL
severedsoul. hahaha
12cwell Seoul is more accurate than you...
i bet i know WAY more then all you keyboard warriors LOL thats why i laughed
12cwell "keyboard warriors LOL" - You realize by saying this you just made yourself the most obvious keyboard warrior ever... Not to mention the fact that you know the term "Keyboard Warrior"...
I've been driving a V6 VTEC 04 Acura TL for a year now and it still hasn't gotten old :)
Very Tall Engine Cooler
R. Kayn omg
Eric the car guy, great explanation!!!!!. I have watched many videos explaining vtec but never found a way to explain it to my 10 year old. Awsome video.
Okay so if the car has vtec does it make it any faster
Only if you add the vtec sticker on the side of the car
palmero8877 my car came with the sticker should i scarp it off cause of ppl like you?
I personally like the sticker and actually had it on my D16 12 years ago. It was said as a joke and not meant to insult anyone.
Slightly on higher RPM... Is not a big deal like a turbo. Still VTEC Hondas are faster than your average 4 cylinder car.
Michael Mack butthurt ricer spotted
Pretty smart of those Honda guys to take a 50 year old steam locomotive enhancement invented by a train loving automotive engineering student from Italy and adapt it to the internal combustion engine.
made it reliable, and cheap to produce too. that's the key point. anyone could've slapped this tech on, but to make it mass production worthy is another story.
Does this mean my grandpa's weedcutter has Vtec? Cause it sure sounds like it does
When someone buy's a G37x its to have a nice car not worry about the extra couple bucks u spend on gas
Why not just have a lumpy cam?
Yah this vtec shit all it does is kill your torque cause your torque comes early and thats what gets you movin
12cwell vtec isn't activated at low rpm
nabre labre. thats why i said it kills your torque because it comes in around 6,500 rpms and torque comes in earlier
12cwell You not know how cars work?
you still get low end torque with the normal cam position, then vtec kicks in to help the engine breathe and you get high end torque as well
Very happy with my H23A VTEC engine... Thanks, Eric, for your inspiration to allow me to finish my project! You are a Car God amongst Gods...
vTec just kicked in yo!
that was realy clear now i understant why the vtec is so special thanks!!!
My mustang doesn't have vtec... It doesn't need it lol
All it needs is the termi swap or the 5.0 coyote swap
yep cause its ACTUALLY got torque
But it needs to get some character not just straight line speed. Youd get smashed on a circuit.
Not by an si ^lol
Wasnt on about no USDM Si fake Type R. NSX is in a whole different universe characterwise and driving fun to any Mustang.
I got the picture of the VTEC. I don't get the part where the oil is supplied to solenoid! I mean is the oil is standby for higher rpm to achieve before the solenoid is activated and lock the rocker arms?
Yes, oil circuit is always pressurised while the engine is running. Solenoid only lets oil go thru when rpms are in the right spot.
Awesome video, Eric! Your videos are the best. They have helped me out over the years and I am sure millions of others! Keep up the awesome work man!
Decent explanation. Still goes to prove that it does take a fine balance of timing, lift, and duration to get power out of any engine.
Does anyone know where I can find a source for the VTEC rpms for specific models? I'd like to know for my mums 2013 JDM Odyssey, which happens to have paddle shift
A Jdm mini van? Dear god please stop
What? It's a good car, and it has paddle shifts. Which I am going to try sometime
And I am Australian
What is the engine number? Example: F23A4, J30A1, etc.
HazardWolfGaming And the original JDM version actually feels like a car, unlike what it's american brother has become
VTEC is not VVT it opens one more intake valve to allow more air into the engine making it produce more power. VVT just changes when the valves open and close not open another valve like VTEC does
Vtec dosen't open another valve.
fullraph
Well the e-vtec actually does, but this is for economy not power.
Nice video. I've been a subscriber for a while. I'm now considering my first Honda (well first Honda that isn't a motorcycle) and wondered how VTEC works. Eric the Car Guy saves the day again!
I was just bought my first Honda car. I grew up with Honda 4 wheelers and motorcycles and they were pretty much 0 maintenace machines. I always had American cars. I bought my first Honda Fit with a 1.5L VTEC. That thing has some snort for such a small engine. Blows the doors off those gutless Toyota Yaris's.
bro eric firts video that see from you that i don't see your face lol good video THANKS
I don't understand how the pins come out when everything's moving so fast and fit themselves into small holes on the other rockers without snapping anything off etc!.
Engineering. One reason people go to school for a long time and come out with engineering degrees.
hey Eric, can you please help me??? do you know the max rpm for a b16a2 with a stroker kit (1800cc +-)?
btw nice video
I love Japanese cars but I'm far from someone who knows stuff about cars. All I know is what I learn from Gran Turismo and forums/comments. I like to learn though so thank you for this. I always hear the VTEC jokes for Hondas, more Civics than anything else and I never knew what it was other than some technology to make it go faster or something.
Yes. You will lose, low end Torque, and stability.
Well its more about Stability and Fuel Consumption. Your engine will most certainly not keep a steady Idle RPM, and it will consume more fuel. It will be agressive and will not be that SMOOTH at everyday driving. At Higher than VTEC crossover point the engine will be exactly the same.
There are certain types of Camshafts ( Like The Toda Killers ) that do not use VTEC. Instead they use a High Cam Profile at all RPM. They are quite Agressive.
Not sure if they were the 1st but the crx and civic had it before the NSX around 89/90. Good info tho.
Now that I saw an animation to go along with it, the system makes sense now
Nice explanation of the "how" of VTEC, but it would also be good to explain the "why". In other words why should someone be excited about VTEC, performance, fuel economy, engine life, etc...
hi Eric, can you also make a video of tranmission solenoid, im having a hard time looking for a video on how to fix tranmission solenoid for honda civic d15b engines, just so i can understand how it works and how to fix it pls :) thanks :)
so there's a higher lift and duration. but for what? what purpose does the increase of lift and timing serve, and why is there so much hate on v-tec?
Creates a greater air and fuel mix = more combustion = more power
what they said, foot on the peddle engages the vtech giving you the extra power you are asking for.
The intake valves open sooner, open wider and stay open longer to allow more air and fuel to go into the engine.
What the replies haven't mentioned so far is that the increase of lift and timing changes allow more air mass at 'high' rpms. At low RPM's the air mass flow would actually be less. It is basically optimising air mass flow for low RPM and high RPM
jack flell It's like an economy mode switch so you're not using a tonne of fuel at low speeds, and it helps keep optimal mixture
Here's what I learned bout people hating on Hondas and VTEC: complete ignorance.
1. They rely on pure HP/Torque to back up their stupidity
2. Hondas make great engines, example? the K20 and B18. Let's not forget, the S2000 with it's F20 engine and an astonishing 8,200 RPM range. That's a 2 liter engine making 240 HP back when it first came out. But the new Civic Type R? Turbocharged K20 engine making 300BHP, and check this, it has VTEC as well.
3.Personal favorite reason, no one has talked smack about the J Series. Yeah I'm talking about the J30-J37 engines. That ALSO have VTEC. Every time I hear someone mention "Honda" it's followed by "Civic". That's because y'all ignorant AF.
4. Most of car meets that I've been to, there's always at least one trash talker that gets walked by a Honda cause they have a piece of shit V6 "Mustang". I've beaten multiple frat boys with Mustangs in front of their friends easily.
5: You only hate on Hondas cause the Civic is a FWD car.
My point is, you can scream about your displacement all you want, but don't be mad when a 2 liter walks your ass, cause I know you'll just keep on the bandwagon with the "hate" car guys have towards the Civic. "Hate" as in, car guys appreciate all builds, regardless if it's a Civic or a Mitsubishi Evo. Guess what? That Evo? Also a 2 liter car. So all you V8 fanboys can go ahead and cry and weep now, cause I'm waiting to hear what you have to say about this comment. Hondas never gave a shit about performance in their Civics. Wanna talk trash? Compare the Nissan GTR, Acura (Honda) NSX GT3, and the Honda hardly anyone has ever heard of, the HSV-010 GT, to your DODGE Challenger RT. I'm betting on my imports.
"hey bro is ur civic turboed i hear a whistle"
"nah i bought a fake whistle but it has vtec so it gives me way more lbs of boost than a turbo could"
very cool im amazed this works without shearing pins or clicking up
yeah no shit! i was like bbwtfq
PLEASE HELP ME!!
Eric I'm having issues with my VTEC in 2003 Honda Accord. I live in an isolated town where there's no honda shop and my mechanic has given up repairing my car. I got the code P2646 and I've tried cleaning as well as replacing the VTEC solenoid assembly, but the problem of engine stuttering at 2700-3000 RPMs still prevails.
It's almost like it happens only when the car heats up, I've tried driving around at 4000-5000 rpms first thing in the morning and it runs fine. Only when I drive it around for 20 mins or so that the stuttering comes back around the 2700-3000 rpm range, even at low speeds. I'm very close to selling the car for scrap, it's close to 325K clicks.
why not just have it vtec permanently full time? or just make it with the bigger cam lobes in the first place? vtec is unnecessary unless it's overburdening the engine only for a short while
you have no idea of what you're talking about. you probably didnt even finish highschool. simple physics.
You can't explain VTEC... VTEC is something you have to Experience!
Hi Eric. I have a 2005 Ridgeline 3.5 engine. Check engine light comes on with DTC P2647 rocker arm actuator system stuck on bank 1, no other warning lights, no oil problem, engine runs fine. I have changed oil twice, check engine light comes back on almost immediately. I took vehicle to Honda dealer to have the ecm programmed they didn't do it.
I'm a jaguar Land Rover tech, I'm not very familiar with this Honda issue. Ant suggestions??
Hi Everyone!
2003 Honda Accord lx 2.4L 4Cyl.
I drive it 1200 miles per year.
Haven't changed oil in 1 year.
The Honda Svc. Dealer said I didnt need to change oil till I got to 3000 miles. When I went in to change it out he looked at me funny and said that I would be throwing out good oil.
Is he right? I drive enough to get the engine very hot cause I use ac.
I dont want my oil to gel and cause my engine to seize up.
Some smart person please explain to me the truth. Thanks! Stay safe.🐄
Actually, I think that reading old patents and realizing the modern potential was the genius. The rest was just mechanical engineering. BTW, Caprotti's variable valve timing came too late to save steam. The US War Dept would not allow Baldwin, Lima or ALCO to use more modern inventions for steam during WW II and gave GM $10 million to refine Diesel engines a project that had implications far past the hostilities.
It's not really "variable valve timing". This is more digital; On or Off. There is no variable/analog adjustment in between the two cam lobes. A true VVT is able to gradually adjust the timing and would actually be less complicated than this.
Only disadvantage a proper variable valve timing has to VTEC is that VTEC can have a different cam profile, where normal VVT is only advancing or retarding the stock cam profile.
Blaylock1988 thats probably why Honda came up with I-Vtec. The "I" portion is actual cam advancement/retarding with the older traditional Vtec still operating as per usual. Competition creates better products I suppose.
Someone has probably already said this, but there is and has been several "VTEC" V8's for a while now, even the more modern CVVT (Continuously Variable Valve Timing).
Variable valve timing is nothing new. Ever heard of the old Rhodes Lifters? They are just a basic form of VVT using hydraulic lifters that pump up and bleed down at controlled rates and certain RPMs.
VTEC is just taking it one step further with a separate cam lobe and controlling it with electronics.
No, the point of VTEC is not to produce more hp at higher rpm.. on the contrary is to be able to produce power at lower rpm as well.
You can get a small engine to produce a lot of hp at high rpm.. for that you need a camshaft with loong valve lifting. But that comes at the cost of loosing a lot of torque in low-mid rpms..
VTEC allows you to have 2 valve lift/timming settings... one for low-mid rpms with shorter valve lifting (favoring torque/power in low rpm) and other for high end
@dsjkak1 There was enough oil, anything was going fine and then suddently stopped working. I know its not working cause when i reach 5000 rpm, the power is the same. The boost of the vtec system is not there anymore. Got an H22A4, 2000 prelude. ill wait the next oil change, maybe the oil supplement clogged the pins or the oil pressure switch got a bad reading... If not working ill wait till winter is gone and check all the stuff.
I love your explanation and it all makes sense now. VTEC is just 2 cam (or 3 in some case) cam profiles on one shaft. A Low-high or low (economy), mid (highway) , and a high (performance) allowing for more power profiles with out the need for modifications. I think correct me if I'm wrong please.
Not everyone has 20k to buy a car like that, most car guys begin by purchasing the cheapest car they can afford. Civics are reliable and insurance is inexpensive. Slowly they learn how to work on the engine and increase performance.
I had a money pit 91 camaro, taught me everything I know, sure I could have saved up but I could never buy back those 4 years of enjoyment.
Variable valve Timing AND LIFT Electronic Control, to be accurate per Honda.
The DOHC version seems noticeable when the system kicks in, but on my '04 TL (UA6), it is SOHC and is unnoticeable.
Eric: Why not do the video on the V-Tec oil strainers? You would be doing owners a favor, and shops can add this simple but necessary service for a few extra bucks. Come on Dude. Do it and I'll unsubscribe from the posers "channel". Scouts honor.
What should be done if the hydraulic piston or pin that activates the vtec gets stuck and does not return? Is it necessary to disassemble the rocker arms to be able to repair it or can it be solved without disassembling? To disassemble the rocker arms, all the springs of the rest of the valves must be decompressed? i am having this problem on a f23a accord engine on cylinder #4. the vtec pin is stuck, any help please eric would appreciate it. Greetings from Venezuela
Great clip Eric. I watched the theory on Engineering Explained, and then seeing it in the flesh on your clip brings it all together. Enjoyed your other clip, the half hour on engines. Just spent €400 on a timing belt job yesterday....
thanks for explaining, I'm kind of disappointed tho, they make it seem revolutionary, I have variable duration lifters I put in my 69 charger, no nonsense just oil pressure, seems it'd be smarter and cheaper to change the lifters then add sensors, new cam, new lifters, new valve train and I get constantly increasing valves rather then all at once at the end, but hey what do I know
If youre going to hate on a car that is reliable, easy to work on, straight forward, and drives way over the 300k mile mark, then i guess you should just stick to whatever you drive. Dont go hating on my brand. I still drive my 93 si, and you know what, it still cranks drives and engages like it did without issues.
So, vtec solenoid is a known point of oil leakage in literally all Honda vtec engines, why? More importantly, if it's leaking, that'll likely do 2 things, (correct me if I'm mistaken) alter the ability of the ems to engage vtec and cause more leakage during during higher rpm
idk guys, just got a 2004 accord coupe ex. This thing has 240 hp and it seriously picks up nicely. I wasnt a fan of honda until i got this ride. Interior is very nice. Car drives smooth and picks up when it needs to. This car is not joke. Very nice car i gota say
Cool indeed!! But i think it would be more accurate to call it a variable valve lift... as variable valve timing advances (or retards) the valve operation, but does not affect the lift... two very different technologies, although nowadays they are used together.
Cheers!
I seriously felt I owed it to vtec to understand exactly how it worked. Not even kidding. I'm not a fan of it on the motorcycle though. On the VFR 750 it kicked in at 5700 rpm and a pain in the ass around long sweeping turns.
VTECs are the fusion between an electric engine and a LS. This engine can still run smoothly at 400k miles, as a matter of fact it can last forever. Every single Power boost is the equivalent of a Tyrannosaurus Fart.
I learned more from your video than other people's video of how vtec works. Thank you!
but it works... it allows you to have a naturally aspirated engine to have best of both worlds without recurring to a turbo ... and its reliable..
Honda used it up to the 290hp 3.0 V6 in the NSX
I dont know why most V8 guys hate on vtec, but then they go and put big cams in their engines and the make em idle like shit.
Vtec is litteraly having big cams and good idle and low rpm efficiency.... Oh the irony.
Don't modern cars have something similar to vtech? I don't know much about engines but isn't it if you're at low rpm's there isn't as much lift as higher rpm's because it would cause unnecessary stress on the engine? So technically vtech set the tone for more modern engines?
my buddy and i was arguing over him saying his buddy popped vtec on a stock LS(no vtec) because he had a chipped ECU! hahaha he would not beleive me when i said thats physically impossible. this video should help hahahaha
dumb ass .
Would anyone know if I would have to get the vtec oil pressure switch replace if it doesn't click? The dumb sensor is hard to put back on. It's the green switch if anyone is familiar with it.
can i put a vtec engine camshaft into my non vtec prelude? or would the cam lobes not alighn with the rocker arms? do they sell a longer duration cam for my 95 2.3L? i haven't found any
VVTi = Variable Valve Timing w/intelligence..... That's what I learned after my son bought a 2013 Toyota Corolla S with a 1.8 Liter Engine.
i have soch vtec model 1991 ed3 1.5i civic :D
That is interesting how that works, but in my opinion, that is just more area's to have expensive issues. I would go forced induction before using a Vtec any day.
I did my oil change and shortly after i went to drive, and the vtec stopped working after a while. I added an oil supplement, can it be the cause of the problem?,
my car eg8 had v tec but never had a chance to experience it bcoz my rpm meter never reach 5 even my speedometer shows 140km/h. So what should i do to kick my vtec on?
Will the pistons out of a 1995 4cylinder Honda accord vtec engine, interchange with pistons out of a 1996 regular Honda accord 4cylinder?
its actually Variable Valve Timing and Lift Electronic Control.
most cars have Variable Valve Timing which the cam sprockets are not fixed so they move depending on the ECU to adjust for maximum power and torque throughout the RPM. this technology is usually called VVTi (toyota), Vanos (BMW), or CVVT(Nissan).
With VTEC it changes how big the valve opens (lift), because its not a linear change, the sound of the engine and the torque curve also change suddenly making the engine feel different.
Theres no "Best Vtec" out there. The sound of vtec is determined by two things. Your camshaft and your exhaust system. Of course if you modify the cams and replace it with an aftermarket one with a higher lift, then it will become louder. If you want the best and loudest vtec out there, then get a k20a or b18c ITR engine swap with a 3"piping and exhaust system. Hope that helps. You have alot more to learn