http://media.mitsubishi-motors.com/pressrelease/e/corporate/detail215.html - May interest some.


Would it be possible if you could fine one to put the head off the 6G72 Mivec on a 6G74? Does anybody know how the mivec is actuated? Electrical, hydraulic or pneumatic? Obviously you would need to get a different timing belt and other things but do they line up?

Would be awesome if you could, but i heard those engines aren't compatible with our petrol, is this true?

I believe somebody on here is running a 6G72 Mivec? Or is might just be a DOHC.........Im sure somebody else will know more than me though :)

I believe somebody on here is running a 6G72 Mivec? Or is might just be a DOHC.........Im sure somebody else will know more than me though :)
killbilly and gotrice both have the DOHC 6G72 non mivec.

killbilly and gotrice both have the DOHC 6G72 non mivec.

Theres a 3rd gen with a swapped engine in it too.......somewhere....

I know there was at least one 6g72 mivec into a magna, it was a full engine swap including the 5 spd tranny and ecu. Mitsiman I think also had another engine. I was just wondering if you could combine 6g74 bottom end and 6g72 mivec top end.

Theres a 3rd gen with a swapped engine in it too.......somewhere....
yes thats Dajajajajajajaja

swapped his 6G74 with 6G72 (MIVEC? im pretty sure)

yes thats Dajajajajajajaja

swapped his 6G74 with 6G72 (MIVEC? im pretty sure)

Sweet! Im not going crazy :)

I know there was at least one 6g72 mivec into a magna, it was a full engine swap including the 5 spd tranny and ecu. Mitsiman I think also had another engine. I was just wondering if you could combine 6g74 bottom end and 6g72 mivec top end.
Why not just do an engine swap with a 3.5L mivec?

If you can find one.....

mean solara?? i thought it was him, the conversion is useful in terms of the power it (DOHC mivec) makes having 198kws, although the torque is still less than the 3.5L SOHC i believe, the mivec is 315nm, please correct me people

yes thats Dajajajajajajaja

swapped his 6G74 with 6G72 (MIVEC? im pretty sure)
Did he? Meansolara did, didn't think someone else did it too. I know there was one kicking around QLD but that was done years ago.


Why not just do an engine swap with a 3.5L mivec?
The engine isn't the right orientation for our cars without some re-engineering.

mean solara?? i thought it was him, the conversion is useful in terms of the power it (DOHC mivec) makes having 198kws, although the torque is still less than the 3.5L SOHC i believe, the mivec is 315nm, please correct me people

Your not far off:
6G72 MIVEC
Type: 2972cc EFI DOHC 24v V6 with variable valve timing
Power: 201kw @ 7000rpm
Torque: 301nm @ 4500rpm
Gearboxes: FWD 5spd and 4spd Auto
Source: 96-97 Diamante 30M-SE
I have read 198kw somewhere else too. Pretty minor tune changes I would guess.

Could buy the whole car for 4k.
http://www.adstuff.co.nz/bb20897e14745b15/carstuff/details.html?ref=AS-43566

I have read 198kw somewhere else too. Pretty minor tune changes I would guess.
It's just a lack of consistancy between sources. I've read 198, 199, 200 and 201 all for the same models.

Yeah no difference really. Still does anyone have any ideas on if this would work assuming you could find the top end off one. Can someone confirm that the heads from a magna 3 vs 3.5 are interchangeable, pretty sure but not 100%.

Found this too on a NZ site.
176- BRAD WATSON- 95 DIAMANTE 30M- ALBANY- 14.207@163.0

Yeah no difference really. Still does anyone have any ideas on if this would work assuming you could find the top end off one. Can someone confirm that the heads from a magna 3 vs 3.5 are interchangeable, pretty sure but not 100%.

Found this too on a NZ site.
176- BRAD WATSON- 95 DIAMANTE 30M- ALBANY- 14.207@163.0
Well, when I investigated consumables between our 3.0 and the Mivec engine the head gaskets appeared to be all the same.

Tidy result. I remember a user by the name Loz (not on here) pulled a flat 15 and 150kW at the wheels with only a muffler swap.

http://www.adelaidejap.com.au/mitsubishi.htm
Found one, maybe there are others. It does seem to use the same gaskets and bolts.

there was one of these gdi engine's available up here at gold coast when i was looking into getting the mivec. the one wreaker had both

just wondering, wouldn't it be more viable to buy a diamante from NZ and get it shipped over here ? http://www.autotrader.co.nz/used-cars/search.aspx?N=279%204294967233%204294966948

they go pretty cheap, dunno about shipping and that, but like looking at that MIVEC
engine at http://www.adelaidejap.com.au/mitsubishi.htm
its like 2.5k, can get a Diamante for about 4k....

personally I'm more interested if anyone can find the 6spd manual from the eclipse?

woops! I got mixed up, yeh it was mean solara! :redface:

http://media.mitsubishi-motors.com/pressrelease/e/corporate/detail215.html - May interest some.


Would it be possible if you could fine one to put the head off the 6G72 Mivec on a 6G74? Does anybody know how the mivec is actuated? Electrical, hydraulic or pneumatic? Obviously you would need to get a different timing belt and other things but do they line up?
They are actuated using oil pressure. I've attatched a technical pdf from mitsu about the SOHC mivec, obviously the DOHC would be different but the general idea would be the same. Be awesome if the 6G72 MIVEC head could just bolt onto the 6G74:badgrin: Massive torque and power there.

Massive torque and power there.
It would be interesting to see, but I think the power and torque would just be due to the cam profile. If that were the case, just a billet/reground cam could yield similar results and it doesn't require anywhere need the coin or time.

true, it would also be interesting to see what if any CR changes there were.

There would definatly be CR changes. I forgot to consider that :redface:

Having the two cam profiles to play with though would be awesome, as you could have the conservative grind for 0-3000/4000 prm then a really aggresive profile from then to 7000 or more:badgrin:. I was wondering though. The '72's have a 91.1mm bore whereas the '74's have a 93mm. That may pose some problems. Although the head could always be machined. The '72 MIVEC also came with the 10:1 compression ratio as well. Specs here (http://english.auto.vl.ru/catalog/mitsubishi/diamante/1996_9/16743/)

Thanks for the info guys, keep it coming. As for CR, couldnt changing the deck height fix the CR assuming the original pistons didnt have specific valve clearance issues?

Engine: Type 6G74 V6
DOHC 24-valve MIVEC
(Fitted with a 32 mm restrictor)
ECU multi-injection
Bore / stroke: 93.0x85.8 mm
Displacement: 3,497 cc
Maximum power: 191 kw/260 ps/6,000 rpm
Maximum torque: 353 Nm/36 kgm/3,500 rpm

Thats what it makes with a 32mm restrictor.

thats would be sweet if the mivec heads fitted on the normal block.

being able to have to cam profiles would be so good, could keep the easy driving car for traffic then change to more agressive cam :)

so really someone need some mivec heads to have a look. how hard are they to get?

If you were to replace the whole engine with a complete mivec what would have to change?

Engine mounts, gear box, ECU?

Well the easiest option is to just rip out the current motor, gearbox and ecu and replace them with the MIVEC motor, 5 speed tippy auto and MIVEC ecu. Engine mounts shouldn't be a problem in third gens as they are in the same position. Unless you want to put it into a second gen, as you'd need to weld in new mounts otherwise you'd have 5 reverse gears and 1 forwards lol.

Of course you could always put in new poly mounts. Since the motor/frontcut may have also been sitting around for a while it'd be a good idea to replace the water pump. Also while it's out of the car it'd be a piece of piss to change the timing belt so that should be done.

Duno if I should buy a second gen cheap and do it up with the mivec, buy a 3rd gen exec, or do up a commy

Duno if I should buy a second gen cheap and do it up with the mivec, buy a 3rd gen exec, or do up a commy
3rd gen or commy. can't mivec up a 2nd gen with the mivec this thread talks about.

yes thats Dajajajajajajaja

swapped his 6G74 with 6G72 (MIVEC? im pretty sure)


nope not him, well not his car anyways

3rd gen or commy. can't mivec up a 2nd gen with the mivec this thread talks about.
Technically it's possible. The engine should fit in without too much bother, from what I can tell the second and third gen engine bays are the same size. Just the mounts would need to relocated and engineer certificated, so that the engine and transmission is round the right way. Just depends on whether the cost of engineering and welding would be more than the added cost of the third gen.

Technically it's possible. The engine should fit in without too much bother, from what I can tell the second and third gen engine bays are the same size. Just the mounts would need to relocated and engineer certificated, so that the engine and transmission is round the right way. Just depends on whether the cost of engineering and welding would be more than the added cost of the third gen.

Welding is free, my dad owns a foundary...