MiVEC?

[IceDragon]

What is MiVec, and is there any theoretical way to put it onto a car that did not come with it, sort of like how there are honda v-tec conversion kits?

 

[tstkl]

http://www.mitsubishi-motors.com/corporate/about_us/technology/performance/e/mivec.html

great, now we are going to have videos of kids in their lancers with mivec kits screaming mivec at every shift.

 

[IceDragon]

But my major question is... CAN you put mivec onto a DSM???

 

[tstkl]

my major answer is


NO



unless you want to drop like 100k into research and design of a head that fits our blocks and can use the mivec system, as well as an ecu that controls all the stock shit plus the new mivec system, to get like 1 mpg more in the city and like 10 hp up top, you won't ever be able to put mivec on a dsm. Get the idea out of your head, or go to honda just so you can put vtec into it.

 

[SILV BLT]

Controlling the system wouldn't be hard at all. You could use your stock ECU and an RPM switch to activate the MIVEC system. But like he said, you'd need the head from one of the few MIVEC vehicles to magically fit our block, or design/modify one to fit. Neither of those options sounds like a possibility.

 

[Evan K.]

I have seen pics of a prototype HK$ system that added variable valve timing to a non-MIVEC evo a few years ago. This was well before any noise that Mits was going to do such a sysem.

 

[IceDragon]

Yup, I remember that story, that is why I ask... I saw that EVO thing, but maybe it is just inbetween evo's and can't ever go to a DSM... ohhhh wellllll

 

[BISHILVR]

Got mivec?

 

[TwoLiterLaser]

You mean you ACTUALLY want to sound like a street bike at 5,500 RPM?

 

[IceDragon]

Yeah, it would be awesome to rip through first and sound like a screaming banshee...

 

[rjclagett]

Yeah, it would be awesome to rip through first and sound like a screaming banshee...

Then just buy a Honda, and save some money

 

[drivemusicnow]

Okay everyone who's not serious about this, or doesn't have any actual information/ideas should probably not talk.

The 4cyl motor that has mivec is called a 4g69. Same motor series, quite possibly the same or similar oil/coolant ports, and most likely a similar bore/design to the dohc 4g64.

Now I honestly think that it COULD be done. I think you'd have to put a lot of time into some custom fabrication to make sure certain things are taken care of, like possibly need custom cam sprockets in order to make sure the valves are properly timed, and possibly some machining to close/open oil or coolant passages. The head gasket would be another challange, however you could probably modify one from either the 4g64 or 4g69 to work.

I think the 4g69 head is "reverse" compared to ours in that the cam gears are the opposite side of the head. This is another issue, and actually something I discussed with a buddy of mine on a different application. We couldn't come up with any reason why you couldn't take a "reverse" head, port what was the exhaust side out heavily, add larger vales to what was the exhaust side, and make it the intake side. This would solve the "backwords" issues, and while the cam gears would be about 180* out of "stock" positioning, and you would have to use the opposite flanges for each (Ie the intake flange would now be the exhaust flange) I DO think you could do it.


But what it comes down to is that it would cost a significant amount of money, and would not at all be worth it.

 

[FORMONTOYA]

Okay everyone who's not serious about this, or doesn't have any actual information/ideas should probably not talk.

The 4cyl motor that has mivec is called a 4g69. Same motor series, quite possibly the same or similar oil/coolant ports, and most likely a similar bore/design to the dohc 4g64.

Now I honestly think that it COULD be done. I think you'd have to put a lot of time into some custom fabrication to make sure certain things are taken care of, like possibly need custom cam sprockets in order to make sure the valves are properly timed, and possibly some machining to close/open oil or coolant passages. The head gasket would be another challange, however you could probably modify one from either the 4g64 or 4g69 to work.

I think the 4g69 head is "reverse" compared to ours in that the cam gears are the opposite side of the head. This is another issue, and actually something I discussed with a buddy of mine on a different application. We couldn't come up with any reason why you couldn't take a "reverse" head, port what was the exhaust side out heavily, add larger vales to what was the exhaust side, and make it the intake side. This would solve the "backwords" issues, and while the cam gears would be about 180* out of "stock" positioning, and you would have to use the opposite flanges for each (Ie the intake flange would now be the exhaust flange) I DO think you could do it.


But what it comes down to is that it would cost a significant amount of money, and would not at all be worth it.

Well said............and I agree, with enough money, just about anything is possible. However, you have to weigh-in as to cost vs gain.

Not worth it.

 

[talonTSIDriver]

to my understang, even with v-tak, it only will basically give you the larger cam without the crappy low end that you tend to get with bigger cams. So really its not going to give you a whole heck of a lot of more overall power, but it will give you a nicer power band to work with and you will have a lot better of a STREET car. As for maybe an acctual race car, i would say mivek or v-tec is not really worth it. I have a honda prelude, originally built by real-time (if you know real-time, they build some serious race cars) they put in a non-vtec head with big cams because it was not worth it to have v-tek when you are almost always in the higher rpm's anyways.

 

[Superbeast406]

I would imagine the easiest way graft Mivec into a dsm would be to get the whole drive train, ECU and wiring harness from a donor car then fabricate custom mounts and axles, hoses, exhaust....etc. This would involve less research than making that head work on our system, but lots of fabrication.