No, this isnt something i want to do, its just in theory


Do you think the engine would fit a 3rd gen, if not, why not

I think the extra .3L of displacement would be helpful, however the aftermarket support is next to none for other parts

discuss

you see that $0.99 380 motor that was just posted in the ebay thread hey? :badgrin: I was thinking the same thing, think it's been asked here before though a while back.

you see that $0.99 380 motor that was just posted in the ebay thread hey? :badgrin: I was thinking the same thing, think it's been asked here before though a while back.
nah, it would be such a useless mod, i was more thinking about why it would/wouldnt work and any benefits it might have...

nah, it would be such a useless mod, i was more thinking about why it would/wouldnt work and any benefits it might have...

Think it was decided that anything is possible, but for the (relatively) small increase in power and torque it's not worth the $$$ outlay.

Totally!
You might spend a certain amount of cash and find that you could have done a unichip,extractors and other things to make it go better than one of those engines.
I think as time goes on,the 380 aftermarket parts will start to become better and you probably find more options for them if other people do the research and development.

I dont see why not, Not that I know much about them but its pretty much the exact same motor, Dont see why it would not work.
probably need an aftermarket ECU

They fit without to much modification there are a few magna race cars getting around with them, and a member on MCA that has done this mod and they are suppose to be quiet quick aswell combined.

Thats awesome!
Any pics that i can check out of these cars with the engine in it?
I wouldnt mind doing it myself but i might end up eventually putting a turbo or SC on my rada so might not be worth it for the long run for myself anyway!
If the one on ebay goes cheap and someone has a mechanic as a friend,even better cause will make it a bit cheaper if they know what to help on and what is necessary to get it done.

']I dont see why not, Not that I know much about them but its pretty much the exact same motor, Dont see why it would not work.
probably need an aftermarket ECU

Thats correct as, We just got to look at your engine conversion Thats pretty damm good i think

6g75 and g674 are exactly the same mounts, weight etc, only thing different is the bigger capacity intake and manifold and also the exhaust is different.

Waste of money doing it though, you have more potential in the 6g74 and have the benefit of matching numbers incase you get sent to the pits

6g75 and g674 are exactly the same mounts, weight etc, only thing different is the bigger capacity intake and manifold and also the exhaust is different.

Waste of money doing it though, you have more potential in the 6g74 and have the benefit of matching numbers incase you get sent to the pits
True, but I always like the bigger block to start with rather then stroking it :P

Exhaust....Should be like my 3.5L conversion, just some spacers onto the standard SOHC dump's and bolted up fine! (due to the extra height of the block over a 3L)

So I would say - Realistically - $1000 for engine...$1200 for ECU - Tuning, Dunno really but could say $600, maybe throw on some adj cam gears...$300ish...all up you'd be looking at $4K or so...and when you can buy a supercharger for that amount, off the shelf, bolt on, be stupid not to buy the charger for bang for buck :)
Thanks Mightymag..

If you were to get ahold of a wrecked 380, you could in theory take out the wiring, ecu, and engine and adapt it to fit the 3rd gen from what ive been told. The main problem with the conversion was the new wiring setup. Also it has to comply with euro standards.

If you were to get ahold of a wrecked 380, you could in theory take out the wiring, ecu, and engine and adapt it to fit the 3rd gen from what ive been told. The main problem with the conversion was the new wiring setup. Also it has to comply with euro standards.

Not taking a dig but why does it have to comply with Euro standards?
I mean....You can put the 3.5L Manifold back on and most RTA places would just think its a standard motor
And if you used the standard ECU, wiring and assorted sensors, well, it should comply with euro standards anyway as your transferring the whole package over

Apparently the motor is straight bolt in and the top magna manifold will bolt onto the lower 380 manifold

There is a guy in SA who either has done or is doing exactly this

There is no reason the 3.5 ECU would not run this either

Apparently the motor is straight bolt in and the top magna manifold will bolt onto the lower 380 manifold

There is a guy in SA who either has done or is doing exactly this

There is no reason the 3.5 ECU would not run this either

Yep i looked into it back 2006 before i did my 3.5l rebuild and the engine itself is a bolt in swap. I was going to get rid of the 380's coil pack ignition set up and run the 3.5 magna dizzy, inlet manifold (due to the 380's having a non return fuel rail setup) and my pacemaker headers, also have to fit the 3.5 magna water/thermostat housing. Doing this means the 3.5 ECU will run it all fine because in reality doing the above makes the engine a direct copy of the 3.5 set up.

Has the 380 got a CPS or does it run through a dizzy like in the magna Gen 3 range? Would be good to do away with the Dizzy and just get an impulse of the Crank like in the Hyundais.:D

Has the 380 got a CPS or does it run through a dizzy like in the magna Gen 3 range? Would be good to do away with the Dizzy and just get an impulse of the Crank like in the Hyundais.:D

It runs coil packs with no dizzy and has a cam angle sensor on the front cam where the blanking plug is on the 3.5L. The 3.5L cam angle sensor is in the dizzy

I really don't understand why one of you guys hasn't done it yet.

If you look at the 380 dyno charts we are getting great hp out of these engines by just bringing them in line with the 6G74 in the Sports, specifically; sports muffler and a six cylinder intake. Fit extractors and its a quantum leap more.

In a light bodied Magna that will give you huge bottom and mid range torque and will still be a good top end (but will not rev as high as the G74).

I really don't understand why one of you guys haven't done it yet.

If you look at the 380 dyno charts we are getting great hp out of these engines by just bringing them in line with the 6G74 in the Sports, specifically; sports muffler and a six cylinder intake. Fit extractors and its a quantum leap more.

In a light bodied Magna that will give you huge bottom and mid range torque and will still be a good top end (but will not rev as high as the G74).

For the effort it wasnt worth it at the time for me (380 engines were hard to get back then) and building up the 3.5L in the end is a better prospect for me.

I really don't understand why one of you guys hasn't done it yet.

If you look at the 380 dyno charts we are getting great hp out of these engines by just bringing them in line with the 6G74 in the Sports, specifically; sports muffler and a six cylinder intake. Fit extractors and its a quantum leap more.

In a light bodied Magna that will give you huge bottom and mid range torque and will still be a good top end (but will not rev as high as the G74).

You will miss out on a few hundred RPM, I can live with that for the extra torque and power a bigger motor will bring.
I'm guessing the reason why no-one has just gone and done it is because something like this is mainly un-chartered territory.....(most) people are scared to do an engine conversion when what they have is good enough...thats how I see it anyway, Its never as straight forward as it looks :P

']You will miss out on a few hundred RPM, I can live with that for the extra torque and power a bigger motor will bring.
I'm guessing the reason why no-one has just gone and done it is because something like this is mainly un-chartered territory.....(most) people are scared to do an engine conversion when what they have is good enough...thats how I see it anyway, Its never as straight forward as it looks :P

Believe me, fit the same cams/head combo as the 380 and give the 3.5 a proper tune to suit (like the 380's had) and the power/torque difference the 300 extra cc'c made isnt that great, in all reality the 3.8L is fairly close to the ralliart 3.5L engine in terms of hardware. The extra capacity and the higher 10:1 compression will indeed help low down torque though which can be seen when comparing the 380 engine to the ralliart 3.5L

And before people go on about the ralliart head mods, they 380 has a complete open chambered combustion chamber where as the 3.0/3.5L have the figure "8" style chamber hence why they needed relieving around the valves,

If the one 380 head is still at the clearance place when i go there next, i will take a picture to explain what i mean.

Also why was taking off the coil packs mentioned? Why would you do that?
Yeah sorry Jasons VRX I really don't know about the whole head thing...Not very knowledgeable in that area :P

']Also why was taking off the coil packs mentioned? Why would you do that?
Yeah sorry Jasons VRX I really don't know about the whole head thing...Not very knowledgeable in that area :P

So that the stock 3.5L ecu could run the whole show as it wont run direct fire 6 coil pack ignition. You could keep the coilpacks on the engine if you are going to run full aftermarket ECU or try and adapt the 380 ecu into the car

IIRC one of the Magnas with a 380 donk is owned by someone from Mistibits in Greenacre

And also IIRC a manual TJ 3.5 was quicker round the track than the Magna with the 3.8L in it anyway.....

Jason -

the 3.5 ecu wouldn't need any adjustments you don't reackon?? fueling i don't think would be an issue but the ignition map?, my main concerns are not having a knock sensor and higher compression, the different chamber design might help this anyway (i'm only speculating)

it does sound like a different way of doing things definitly, especially if you have a 3.5 thats getting a bit long in the tooth, if you could get a relativly low KM 6g75, bolt it in with the 3.5 accessories..

Hmm, what about the engine cover - Think that'd fit over the top of a 6g74 manifold?

Hmm, what about the engine cover - Think that'd fit over the top of a 6g74 manifold?

What? :gtfo:

What's a 380 motor going for?

Jason -

the 3.5 ecu wouldn't need any adjustments you don't reackon?? fueling i don't think would be an issue but the ignition map?, my main concerns are not having a knock sensor and higher compression, the different chamber design might help this anyway (i'm only speculating)

it does sound like a different way of doing things definitly, especially if you have a 3.5 thats getting a bit long in the tooth, if you could get a relativly low KM 6g75, bolt it in with the 3.5 accessories..

The ignition map for 3.5L is tuned fairly conservatively so if 95 octane fuel was run in the 3.8L with 3.5 ECU im sure it would be ok. Remember that the ralliarts with 9.4:1 comp ran on 91 octane unleaded and had a more aggressive timing map than the stock 3.5L which had 9:1 comp. Of course the better option is to have a piggyback fitted and get it tuned to suit the 3.8L/3.5 ecu combo.

I can tell you that my engine which is running more than 11:1 comp has more ignition timing than the stock 9:1 engine admitidly i run mine on 98 octane but even on the lower 95 grade fuel i can safely run about "stock" timing.

What? :gtfo:

What's a 380 motor going for?

Caine (mitsubishi clearance) sold a complete brand new 380 3.8L engine for $2200, im not sure what theyd go for at the wreckers but it would be significantly more than a secondhand 3.5

cheers for that Jason, it's pretty much what i was thinking..

Remember when Caine sells an engine, it comes with wiring, manifolds, alt everything including oil and filter.

The ignition map would not pose an issue at all.

The 3.0 and 3.4 s4 engines have a CAS on the crank as well, I assume that the 380 has the same or can have one bolted on. Worst case, use the oil pump housing from the 3.5 and walah, there are the 2 mount bolt holes.

I would be keen to give this a go if I had a 3.5, but as I have a 3.0 am more hesitant.

Remember when Caine sells an engine, it comes with wiring, manifolds, alt everything including oil and filter.

The ignition map would not pose an issue at all.

The 3.0 and 3.4 s4 engines have a CAS on the crank as well, I assume that the 380 has the same or can have one bolted on. Worst case, use the oil pump housing from the 3.5 and walah, there are the 2 mount bolt holes.

I would be keen to give this a go if I had a 3.5, but as I have a 3.0 am more hesitant.

Really that just gives you a much better performance gain...

There isnt much difference in swaps between the 6g72/4 is there? Why should it be any different for 6g74/5?

Because you are going the extra step from 3.0 to 3.8, you would be pushing things a little for the ECU to keep up a map when you are increasing that far.

If I CBF changing to a 3.5 system then perhaps but then again I would need to have a car that is worth the upgrade lol

My 3.5 magna has done 220,000 (all by me). Im swaping engines either way, currently im looking at brand new 6g74.

I just want to know what am i getting myself into if i buy 380 engine? Oh yes & my car is mixer lpg, i know you cant put mixer on 380 but oh well whos gona know right?

Should i even bother thinking about it?

My 3.5 magna has done 220,000 (all by me). Im swaping engines either way, currently im looking at brand new 6g74.

I just want to know what am i getting myself into if i buy 380 engine? Oh yes & my car is mixer lpg, i know you cant put mixer on 380 but oh well whos gona know right?

Should i even bother thinking about it?

this sort of mod interests me...wonder how it would go with my mods added to the 380 motor. I am keen for a little more down low...but dont want to go FI with this car.

Guys,

Do it.


Without the restrictive exhaust and intake look at the power figures we are getting.

With extractors you're in the 160KW ATW range.

This is just the start. No one has opened the engine yet.

The cams are very mild and the CR is high. There is abundant torque down low which can be traded away.

All good for future development.

Guys,

Do it.


Without the restrictive exhaust and intake look at the power figures we are getting.

With extractors you're in the 160KW ATW range.

This is just the start. No one has opened the engine yet.

The cams are very mild and the CR is high. There is abundant torque down low which can be traded away.

All good for future development.

I agree to a certain extent :)

The only issue i see is that once you fit a 3.8L into a magna and "adapt it" to use the 3.5's ecu, distributer, fuel rail/inlet manifold/TB set up etc all you really have is a slightly larger slightly modified version of the 3.5L.
The major technical advantages of the 380's 3.8L which are the coil pack igntion, fueling system and greater ECU computing power (all of which help with low to midrange torque) are lost unless you adapt the whole 380 ecu over and or fit a decent fully optioned standalone aftermarket ecu.

When these engines become cheaper (which they will over time) then it will be a worthwhile option but until then a mildly modded 3.5L (to ralliart type specs) will give similar results with less running around. if that makes sense :)

What about trying to pick up a 3.8 Mivec out of a Pajero?

What about trying to pick up a 3.8 Mivec out of a Pajero?
Same deal, but then you will either need an aftermarket computer which can support MIVEC (Mine can) or as Jasons VRX said use the whole ECU setup.

I think it'd be a great swap!!!
But I would go along the lines of sort of what I've done to get maximum power..
Manual box + 380 engine + aftermarket ECU

Although in saying that can you not just bore out a 3.5L to make it 3.7L+?
Because then you can put some forgies in, and go with a CR you want.

What about trying to pick up a 3.8 Mivec out of a Pajero?


mmmm 184kw MIVEC 3.8L... Chuck a full aftermarket ecu, a high-flow 2.5" exhaust on and some extractors and you're laughing - 200wkw would be very acheivable methinks.

mmmm 184kw MIVEC 3.8L... Chuck a full aftermarket ecu, a high-flow 2.5" exhaust on and some extractors and you're laughing - 200wkw would be very acheivable methinks.
Thats very underrated aswell
3L MIVEC in the 3rd gens overseas (im sure anyway) make about 195kwish. A MIVEC 3.8L would be nuts.
Theres a guy in the US making a 3.5L DOHC MIVEC TT
insane power much?

']Thats very underrated aswell
3L MIVEC in the 3rd gens overseas (im sure anyway) make about 195kwish. A MIVEC 3.8L would be nuts.
Theres a guy in the US making a 3.5L DOHC MIVEC TT
insane power much?

I thought it was underrated too... supprised me how powerless it is considering what is it... I imagine its due to the euro standards bull****

I thought it was underrated too... supprised me how powerless it is considering what is it... I imagine its due to the euro standards bull****
Yep I'm sure if you pissed off the 56 cat's they have to make them so green you'd gain some power!

Would be a great conversion, then you could slap 3.8L badges from a commodore all over your car.

']
Would be a great conversion, then you could slap 3.8L badges from a commodore all over your car.
in that case, sign me up!

']Yep I'm sure if you pissed off the 56 cat's they have to make them so green you'd gain some power!

Would be a great conversion, then you could slap 3.8L badges from a commodore all over your car.

Perfect!

Screw the TT's gonna put a 3.8 in and slap commy badges on it!

YOu are all wrong

Paint the spark plugs red and stamp GO on top of the pistons

YOu are all wrong

Paint the spark plugs red and stamp GO on top of the pistons
and make sure you replace all of the fuses with red ones, the bigger the number the better

and make sure you replace all of the fuses with red ones, the bigger the number the better
LOL EVENNNNN if they work, replace them anyway.

I've heard if you replace a 5A fuse with a 40A one its actually better cause the fuse is bigger there is less resistance which will make your electrical system more powerful.

There is just so much possibility in a 380 engine!
Dont forgot to paint the engine cover...

Only hassle is that the car will feel like that much of a boat being heavy in the front, you may do 130 and not even know it

']I've heard if you replace a 5A fuse with a 40A one its actually better cause the fuse is bigger there is less resistance which will make your electrical system more powerful.

20 extra kW at the clear indicators, bro. :P

First person to do a 6G75 conversion has to follow the guidelines in this thread now, well done. lol

Its tempting to do it just for lols

Then TT it.

Only hassle is that the car will feel like that much of a boat being heavy in the front, you may do 130 and not even know it

is the 75 really that much heavier than the 74?

is the 75 really that much heavier than the 74?

Weird when you think about it, pretty much the same engine with less metal on the inside.....

How different are the heads etc? Gaskets and what not.

is the 75 really that much heavier than the 74?
enought to make it feel like a boat and you not knowing how fast your going....

Weight difference between the 2 engines is bugger all.

enought to make it feel like a boat and you not knowing how fast your going....
lol :P

enought to make it feel like a boat and you not knowing how fast your going....

so it feels like a stock executive then????? :D

i was having a good suss of a race magna at lonsdale mitsubits
its got a 380motor in a series 3 it sounded wicked
gad a pair of r32 gtr brakes an r32 gtr weels very impressive car when they have the right **** done to them under the hood.cant waght to c sum 380motors out there in sum magnas

Only hassle is that the car will feel like that much of a boat being heavy in the front, you may do 130 and not even know it
:bowrofl: :bowrofl: :bowrofl:


i was having a good suss of a race magna at lonsdale mitsubits
its got a 380motor in a series 3 it sounded wicked
gad a pair of r32 gtr brakes an r32 gtr weels very impressive car when they have the right **** done to them under the hood.cant waght to c sum 380motors out there in sum magnas

Uhh... what? :confused: