Ok here's the plan in theory... 3.0l MIVEC heads put onto a 3.5l block sound reasonable? only shortfalls so far is that i need to get ahold of an ECU from an FTO to make this sucker work, and the timing covers may not line up. I have access to the MIVEC engine already now all i need is the time and a bit more funds to get the work started. Has anyone attempted something like this before?

Sounds interesting :)

Keep in mind you'll only have 9:1 CR though, any plans for higher CR pistons?

id say yeah its on the cards. Whats the CR on a 3.0 MIVEC?

I. since i got my 3rd gen, have always wondered if this would work. And if it does think about the power gains. The 3.5 mivec listed on wikipedia had 194kw stock and somewhere aroun 330nm. It would be a beast.......ntm the awesome sound it would make.

fto ecu would be useless, the ecu from a 2L is never gonna work properlyon a 3.5L. you will need to go full aftermarket, something with mivec/vtec/ivvti control. i would go to some1 that tunes FTO's and see what ecu they use as they have the experience tuning mivec and would have some idea where to start.

would also need the chamber volume of the mivec heads and the bore, stroke, installed height of piston in 3.5, volume of any dish/recess in 3.5 pistons, head gasket thickness, so you can check CR

pajero pistons for a 10:1 CR, use the rocker covers and timing covers from the mivec motor.

I dont reckon you will see 194kW tho.

What I'm really interested to see is how the MIVEC heads respond to nice set of decent cams, supposedly that heads flows fairly well unmodified.

pajero pistons for a 10:1 CR



will only be 10:1 if the mivec and pajero heads have same chamber volume

Very interesting thought.....

Hope this comes to see daylight the thought of a 3.5l mivec is tempting... hmmmm

There would have to be software to unlock the fto computer, from there you could adjust for the fuel compensation, yes?

it just wouldn't work well enough to justify... the fto mivec is a completely different engine model (6A12) and is only a 2L. you could probably make it work... i personally wouldn't bother for the bit extra a proper ecu would cost.

Stupid question but have you checked if the head gaskets are the same so you do know they actually fit??!@?

']Stupid question but have you checked if the head gaskets are the same so you do know they actually fit??!@?

what a stupid question!

good idea mate, check everything out first, like what tuffy said

Apparantly there is a Mivec 6g74 according to Wiki, so these heads would most likely fit (assuming Wiki is correct).

Secondy, there are 6g72 Mivecs motors, and ive heard that the 6g72 heads fit straight onto a 6g74

yeah, SOHC 6G72 and 74 heads have zacharys desease.

Heck, even the DOHC heads from the pajero are exactly the same underneath. :D

Apparantly there is a Mivec 6g74 according to Wiki, so these heads would most likely fit (assuming Wiki is correct).

Secondy, there are 6g72 Mivecs motors, and ive heard that the 6g72 heads fit straight onto a 6g74

Yep they do, same gasket and whatnot, i think an american galant or something like that has the Mivec 3.5l, not sure though i remember reading it somewhere.

ok guys some feedback for you. yes the gaskets are the same and yes this can be done relitively easily. the guy who im dealing with has built several MIVEC magnas, in fact the last 3.0l MIVEC TE he did ran 14 seconds untuned!! the pistons are the issue at the moment and what the hell im gonna do about an ECU. i was only assuming on the FTO venture but if its full aftermarket thern thats what its gonna have to be. the plan is to get started in the next 3 months

Full aftermarket is the best way I believe. The cost isnt to bad either, considering the amount of tunning options that are available.

ok guys some feedback for you. yes the gaskets are the same and yes this can be done relitively easily. the guy who im dealing with has built several MIVEC magnas, in fact the last 3.0l MIVEC TE he did ran 14 seconds untuned!! the pistons are the issue at the moment and what the hell im gonna do about an ECU. i was only assuming on the FTO venture but if its full aftermarket thern thats what its gonna have to be. the plan is to get started in the next 3 months
Pics or it didn't happen.

Pics of what? Fool.

Kennyghost, all the best with the build mate. Sounds interesting and unique.

ok guys some feedback for you. yes the gaskets are the same and yes this can be done relitively easily. the guy who im dealing with has built several MIVEC magnas, in fact the last 3.0l MIVEC TE he did ran 14 seconds untuned!! the pistons are the issue at the moment and what the hell im gonna do about an ECU. i was only assuming on the FTO venture but if its full aftermarket thern thats what its gonna have to be. the plan is to get started in the next 3 months
His name isnt Dave since your in Perth by any chance?? Dude from mogwa (also a member on herre once upon a time) had a 3.0Mivec TE done by him, and had all sorts of headaches and cost him quite a fair bit of $$$ if memory serves me correctly. The guy sold it, and brought an evo 8 instead.

Nice idea though, if i had the patiance and the $$$ i would prob do it as a nice little project

His name isnt Dave since your in Perth by any chance?? Dude from mogwa (also a member on herre once upon a time) had a 3.0Mivec TE done by him, and had all sorts of headaches and cost him quite a fair bit of $$$ if memory serves me correctly. The guy sold it, and brought an evo 8 instead.

Nice idea though, if i had the patiance and the $$$ i would prob do it as a nice little project

this was a white one with a big ass spoiler on the back
also had chrome rims
not sure but i think the guys name was keith or something
apparently the whole car had to be stripped and everything put in from the donor car

apparently the whole car had the be stripped and everything put in from the donor car



OUCH.... ALOT of work.!:redface:

Maybe thinking of another guy that im thinking of rob.

Hmm. GL with the project anyways dude :)

Pics of what? Fool.

Kennyghost, all the best with the build mate. Sounds interesting and unique.
Pics of the MIVEC engine/head in a magna :nuts:

Was I THAT hard to understand? I want to see the car and its hardware... bloody hell.

Pics of the MIVEC engine/head in a magna :nuts:

Was I THAT hard to understand? I want to see the car and its hardware... bloody hell.


Is it that time of the month again Lucy....?:bowrofl:

this was a white one with a big ass spoiler on the back
also had chrome rims
not sure but i think the guys name was keith or something
apparently the whole car had to be stripped and everything put in from the donor car

that would be keefer i think. used to come into my work all the time...looks like a serial killer lol

Is it that time of the month again Lucy....?:bowrofl:
I'm not sure, ask KJ.ei? :)

that would be keefer i think. used to come into my work all the time...looks like a serial killer lol

haha yeah that would be him

I'd say it's a good plan...

Buy mivec heads for way too much or buy 2 new billets which will make more power to the limits of the stock flow, springs etc etc.

Actually scrap that. The DOHC heads will come in handy anyway.

The way i see it, when increasing power even further mivec is often deleted from the system anyway.

Im interested to see if you can get it working though. Also i havent heard of how anyone goes about tuning them.

ok yes its keifer who has the 3.0l mivec white magna and his friend/relative Anthony did the conversion. yep its a big job doing the whole engine swap and there was alot of work involved but i have been assured that in onli swapping the heads and the computer upgrade it will be far less of a headache and will prove some pretty awesome gains. oh and ill get some pics of keifers engine next time i see him