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View Full Version : MIVEC Vs VTEC



disco_dave
04-06-2005, 08:39 AM
Hey guys n Gurls! As im an Ex Magna Boy and now a Honda boy I thought this thread my be interesting to u peeps.

Edit: URL Removed -KB

What are your guys opinions on the matter?

and try not to be rude
(have respect for other peoples thoughts)

Meh
04-06-2005, 09:02 AM
look at the forum its** posted it on, seriously, they aint gonna say a mitsubishi is gonna be better then their honda's

such a biased thread

Redav
04-06-2005, 09:03 AM
There's a bit of misinformation there and comments based on one-eyed opinions but hey, what do you expect with a one make forum?

Anyway, Mivec and VTec is very similar so I don't think one is better than the other. Honda make the better engines and that's the difference that shows.

Mark H
04-06-2005, 09:07 AM
Hey guys n Gurls! As im an Ex Magna Boy and now a Honda boy I thought this thread my be interesting to u peeps.

Edit: URL Removed -KB

What are your guys opinions on the matter?

and try not to be rude
(have respect for other peoples thoughts)
2 pages in and thats enough for me....That thread seems to be all unsubstantiated opinions from a small handful of people....not very insightful I'm sorry.

michaelhaynes110
04-06-2005, 09:09 AM
2 pages in and thats enough for me....That thread seems to be all unsubstantiated opinions from a small handful of people....not very insightful I'm sorry.

Have to agree with you there. None of these guys really know that much.

Meh
04-06-2005, 09:13 AM
id like to see the 3ltr manual Mivec up against these boys

they think mivec was only ever in a 1.6ltr :nuts:

Redav
04-06-2005, 09:17 AM
id like to see the 3ltr manual Mivec up against these boys

they think mivec was only ever in a 1.6ltr :nuts:
Don't forget Honda have a 6cyl VTec engine.

disco_dave
04-06-2005, 09:28 AM
Umm ok so there one sided oppinions...

BUT i asked wat your thoughts on the matter were...not what your thoughts on the acually responses were...LOL!

from reading on the honda side it seems that the Vtec engine has more response than the MIVEC.

Meh
04-06-2005, 09:29 AM
so now u come to a mitsubishi forum and ask that question,
of course its goin to be one sided as well,
i really dont think we need the arguments about something to petty

disco_dave
04-06-2005, 09:34 AM
Im pretty sure this is a fourm...where u talk about Cars...!

I asked for your opinions. to get both sides of the story

Killbilly
04-06-2005, 09:45 AM
Don't link across like that please. We've had instances of people "defending" magnas and causing people to come across here and just cause havoc.

I know this wasn't your intention hence the friendly warning. Just letting you know that we'd prefer people not to cross link to other forums for this exact reason.

Other than that, feel free to discuss the VTEC vs MIVEC debate.

I don't know enough about either to form an opinion, but my non mivec dohc 24v 6g72 has beaten the newish 177kW iVTEC accord :P (Dunno if it was manual or not, prolly auto...so it probably wasnt a fair race...but still...I won :P hahah)

Cheers mate.

mrbsh1
04-06-2005, 09:47 AM
ok having never experianced vtec i can't past judgement on this, but from my understanding mitsubishi paid honda a sum of money to gain knowledge on a vtec system for their engines thus mivec.

However Mivec is not overly used in every car that mitsubuishi make as vtec is in Honda so sure with more vtecs then mivec around the world honda has a proven formula. As mucha s i love mitsubishis i would have to say that VTEC is the champ here.

But then look at Mitsubishis performance engines like teh 4G63 now thats an engine.

Aspec
04-06-2005, 09:57 AM
Well, reading on through the first page, with no comments of why VTEC was better from some of the Honda boys, it seems their was quite a good discussion from 3 onward.

I think everything was covered in that thread, as Redav said they are based on a similar principle and technology, it seems however that the Power band of the VTEC hits harder, its more of a on/off system. If you read about MIVEC on Mitsubishi's website, they mention that their system is phasing between low range and high range to deliver optimum fuel economy and torque, so its more like its adjusting to driving condition for economy and smoothness rather than power.

Mitsubishi haven't really used MIVEC in Australia and as far as reliability goes I don't know, I have never driven a MIVEC vehicle nor a VTEC, but from what Ive read you have to Rev very hard to squeeze all of the power out of Honda's, where as it seems the MIVEC is more all rounder in the colt and outlander/grandis.

The 2.4 ltr MIVEC is used in Ralliart Lancer in the states and there good for about a 15.00 quarter i believe.

Mark H
04-06-2005, 11:21 AM
One thing I was wondering about, does'nt mivec affect both inlet and exhaust valves whereas Vtec is only inlet??? Am I wrong on this? Because if mivec does both and vtec does only inlet, then I would think that the mivec system in principle would probably be more flexible in terms of producing better horsepower at any given rev range as opposed to the vtec "power band"???:confused:

magnat
04-06-2005, 11:37 AM
Who cares about VTEC vs MIVEC.. we all know which one is superior in our own minds.. lets leave it at that ..
This will end up being another Battle of 6G72 Manual VS 6g74 Tippy debate..

sola|2a
04-06-2005, 11:38 AM
FYI

iVTEC (http://asia.vtec.net/article/ivtec/)

tommo
04-06-2005, 01:15 PM
That's pretty good sola|2a. If anyone wants some more info on how VTEC/MIVEC systems work I suggest that they look for a book called 21st Century Performance. It's got heaps of info on anything to do with cars, even aerodynamics! But the info on the variable valve/timing systems in there is pretty informative.

evil_weevil
04-06-2005, 08:36 PM
gee's !
normally its a holden 6 vs magna 6 thread, or on other forums, V8's vs turbo threads!!

good to see a proper discussion and thats why i looked in because me, ive never driven a VTEC or MIVEC powered car - but have heard only good reports on both engines, so ill keep checking this thread to see what peoples answers are !

:)
Chris

Sports
05-06-2005, 05:31 PM
I was under the impression that the MIVEC system is VTEC, mitsu bought they system from honda. I read it somewhere a long time ago, dont know wether it right or not but it does the exact same thing so there could be some truth to it. Anyway those Civic VTi-R's are nothing special, same as integra and preludes. It's the Type-R's and S2000's give manual magna's a hard time. And yes the Legend's have VTEC, guy at work has one, 3.2L V6 230hp North South engine in a FWD (what a combo hey), oh and there all autos same as the new V6 Accords. The 4cyl Euro's are manual.

Maccy D
05-06-2005, 05:57 PM
My understanding by those in the know is that Mitsubishi uses Vtech technology under liscence from honda, and obviously it is thus called Mivec in Mitsubishi's. But i thought you guys would already know this.

evil_weevil
06-06-2005, 05:47 PM
It's the Type-R's and S2000's give manual magna's a hard time.

as well as most other cars on the road - 14 second street cars those two - bloody good performers!!
If i were to get a front wheeler sports car it would be the type R hands down

SUBishi
06-06-2005, 07:28 PM
Just in relation to the mivec engine, yes they do make more than just the one sized engine in production cars
Colt has a 1.5 mivec
Outlander has a 2.4 mivec
Grandis has a 2.4 mivec

and the next generation of lancer will also have a 2.0 mivec (123 kw)
All i can say is thats blo*dy impressive for a lancer

Phonic
07-06-2005, 08:56 AM
VTEC and MIVEC work on the exact same principle, switching cam profiles to increase efficiency throughout a larger rev range.

The ammount of 'kick' either system will have when switching to the 2nd cam profile will simply depend on the agressivness of that cams profile.

There really isn't any need to debate anything, they both work in the same manner and both do it well, if anything you could compare engine of similar capacity for performance. Like Hondas 1.6 VTEC (B16A??) with Mitsu's 1.6 MIVEC, not sure of the hondas power output, but the Mitsu 1.6 produces around 130ish kW I think?

Redav
07-06-2005, 04:08 PM
Just in relation to the mivec engine, yes they do make more than just the one sized engine in production cars
Colt has a 1.5 mivec
Outlander has a 2.4 mivec
Grandis has a 2.4 mivec

and the next generation of lancer will also have a 2.0 mivec (123 kw)
All i can say is thats blo*dy impressive for a lancer
The Mivec you've mentioned isn't the same version as VTec. It's Mitsubishi's version of VVT.

BluWhle
08-06-2005, 09:02 AM
I used a celica (VVTI), Type R (VTEC) and also a FTO (MIVEC) which have the same mods done 2 it, to race and to me personaly I must say VTEC hits in alot harder, closely followed by VVTI and than MIVEC. But thats me, or even maybe the setup on the cars, but thats how it felt that night.

bondy
08-06-2005, 09:29 PM
i dont see how they are cheating with marketing...MIVEC is something like Mitsubishi Innovative Valve timing Electronic Control.

Redav
09-06-2005, 08:44 AM
But now they aer saying that it is still a mivec but it is only advancing / retarding the camshaft timing. I just think they should have been more honest with us and marketed it like the honda's do where they maret it say as a vvt-i etc.
Agreed. It should be MVVT.

bondy
09-06-2005, 04:49 PM
Some of you are basically saying that the belief is, is that MIVEC is the same as VTEC. Which still holds true if MIVEC has VVT engines with single cam. Because there are also single cam VTEC engines. You are making it sound like there are only dual cam VTEC's

pseudomorphous
09-06-2005, 09:47 PM
it depends on the country for these power figures but im pretty sure these are the japanese figures for there respective cars and it comes down to this.

3.0L V6 24-valve DOHC mivec 201.3 kW@7000 rpm

3.0L V6 24-Valve SOHC VTEC 178.97 kW@6250 rpm

tho the new ivtec is different and i dont know if theyve got it in the 3.0L, it would help if i could find stats for DOHC or SOHC for each but i couldnt. also these stats come from these sites so dont blame me if theyre wrong.
http://automobiles.honda.com/models/specifications_full_specs.asp?ModelName=Accord+Sed an
http://www.globalcar.com/datasheet/Mitsubishi/1996MitsubishiDiamanteV63000MIVEC.htm

Redav
10-06-2005, 08:57 AM
Some of you are basically saying that the belief is, is that MIVEC is the same as VTEC. Which still holds true if MIVEC has VVT engines with single cam. Because there are also single cam VTEC engines. You are making it sound like there are only dual cam VTEC's
Yes and no.

As Dave said, what we're saying is that Mivec / VTec relied on two camshaft profiles per cam, (regardless of SOHC or DOHC however I was only aware of DOHC Mitsu's), which are selected hydraulically. These days Mivec is SOHC VVT, (except maybe the up and coming Evo but I doubt it), so varies the timing of the same camshaft which I didn't think VTec ever was.

VRADA
10-06-2005, 09:00 AM
Yes and no.

In it's original form, Mivec was only DOHC = VTec except I think in it's original form there was SOHC VTec. These days Mivec is SOHC VVT, (except maybe the up and coming Evo but I doubt it), which I didn't think VTec ever was.


U just contradicted urself in that statement.
"in its original form there was SOHC Vtec"....
"These days Mivec is SOHC VVT, (except maybe the up and coming Evo but I doubt it), which I didn't think VTec ever was."

[SEIRYU]
10-06-2005, 09:04 AM
id like to see the 3ltr manual Mivec up against these boys

they think mivec was only ever in a 1.6ltr :nuts:

also the 2.0L V6 in the FTO GPX too wannit?

Redav
10-06-2005, 09:09 AM
U just contradicted urself in that statement.
"in its original form there was SOHC Vtec"....
"These days Mivec is SOHC VVT, (except maybe the up and coming Evo but I doubt it), which I didn't think VTec ever was."
I changed my post however you've missunderstood what I've said.

Mivec = Mitsu
VTec = Honda

The systems is based around the use of camshaft profiles and independant of SOHC or DOHC.

Just because it's SOHC doesn't mean it's not Mivec / VTec. What dictates whether it's really the same as the original form is whether it uses two cam profiles on the same camshaft or not.

I believe that originally there was SOHC VTec then it became DOHC VTec. VTec isn't VVT. No contradition there mate.


also the 2.0L V6 in the FTO GPX too wannit?
Yes and I'm sure he knows that.

VRADA
10-06-2005, 09:14 AM
Not in the second edition....
but the first was a bit unclear.

I know the difference between the two, one mate has a type r the other a fto.
all that VVt and **** like that i just ignore now, pointless added on crap that really isnt true to the name