first question. what would i have to do to put a 3.5 l engine into my 3 l? its manual.
second question. how much is it to rebuild a 3l with stronger internals capable of withstanding over 200 kw?
(turbo or supercharged)
and what would be the cheapest route.
thanks :happy:

The search button is your friend,

If your looking at turbo or supercharged, And by now i'm sure you've seen EGO's thread + the select few who have turbo'd and supercharged, You would know that your going to need a deep pocket, time and of course alot of patience. Contact the members direct via PM, That will be your best chance to gain the know how aside from your thread.

Cheapest start is Ralliart cams and an ECU re-flash mate. That should get you started.

im just thinking my engine wont hold up 200 thou :( expensive to rebuild?

With labour, forged pistons, lets say you get another crank (75 crank perhaps?) rods, gaskets, bearings, you'd be looking around the $5K mark. Basic rebuild kit with just new pistons and rings, bearings and gaskets is about the $800 mark (been a while since I checked hey)

this is what you do.

keep your pipedreams on hold for now. put a 3.5L in (motor....$700?) and enjoy it for what it is.

then when you have $5K for a rebuild and $5K+ for FI stuff, then go do it.

im just thinking my engine wont hold up 200 thou :( expensive to rebuild?

mate dave from lancer city find him on ebay basrd in caloundra you can get a low k 3.5l cheap from him
put it this way i got my spare car a 3l te and not doing timing belt etc as its done 220000kms cheaper for me to buy a second had motor off him for 300 than do timming belt etc just driving it untill to dies i think around 500 for a 3.5l
a real low 3.5 less than 50k for around 700

stock internals will handle 200+kw at the flywheel. if you're talking at the wheels, at the very minimum I would replace the stock pistons with forgies. you can probably pick up some suitable ones for less than $1k.

but then, while you've got the engine apart, you might as well do head work, crank, rods, cams, etc...

and then a heavy duty clutch and LSD.

that's starting to get spendy, and you haven't even bought the FI kit yet!!

just wanted estimate on the cost. if i put a 3.5 l in what has to be modified just the trans

The 3.5 bolts up to the 3 manual box just fine. The first gear ratio is slightly different in the two boxes IIRC.

The 3.5 bolts up to the 3 manual box just fine. The first gear ratio is slightly different in the two boxes IIRC.

lose much power from the gearing difference?

First gear on the 3L box is shorter so it accelerates faster.

I think the 3.5L clutch is slightly stronger, worth replacing anyway whilst the donk is out.
Sprintex Magna made 225kW at the fly with stock internals.

clutch plate stronger or gearbox?

Clutch plate, gearbox besides the 1st gear is the same (as already mentioned)

How much do you have to spend? Or how much are you GOING to spend?

well loans are the limits. but if i could get away with a 3.5 L for under 2G with lowish k's id be happy. howmuch would it cost for a mech to do a swap?

Clutch disk is different, you can easilly run the 230mm clutch on your 3.0 flywheel or get a step machined and run the 240 if you really feel the need

There will be other slight differences, top alt bracked, top PS bracket, cross over pipe but in theory this should all come with the second hand motor you buy

The 3.0 ECU will happily run the 3.5, if you want to however I can supply a 3.5 ecu and loom (has barra sensor in the 3.5) if you want to go that bit further

so i can still use my clutch. cause its preaty new only got it 3 months ago. so other then that not many troubles. sounds like that will be the way to go. if i got an engine for say 700 what would be the minimum to get the 3.5 in. and running good

well loans are the limits. but if i could get away with a 3.5 L for under 2G with lowish k's id be happy. howmuch would it cost for a mech to do a swap?

Somebody on AMC recently had a 3.5 conversion done on his TE for $1600 installed ($800 for the engine, $800 for the labour). I would say that was one of the more expensive conversions for a 3.5. Engine had something like 80,000km I think.

thats good that would be ok :D i want a low k engine mines past 200 thou must be running out of life

to add to that will i need it mod plated?

thats good that would be ok :D i want a low k engine mines past 200 thou must be running out of life

to add to that will i need it mod plated?

Check with whatever form of RTA you have there, my guess is yes on the mod plate. 200k is nowhere near end of life. Mine is approaching 300k and still has plenty of power :P Too bad about its smoking problem though.

oh dean and whats my engine model?

6g72 3.0 v6 24v sohc

thanks.

thats good that would be ok :D i want a low k engine mines past 200 thou must be running out of life

to add to that will i need it mod plated?

Cant see why RTA would really care as the Verada was the same shell and same designation of shell and had had the 74. In addition to that when I got my pink slip for the wagon, it was done with the 74 in it and they did not even ask

I know Vic Roads do not care as the same series of car came with the 74 engine both in the KE, KF as well as Magna from TH onwards (same car, different trim)

true thanks ill ask around.

True Mal, I work for transport so I spoke to some of the guys at regency before I did my conversion. The 3.5 is an option in the magnas and is in all the veradas. They really don't care about our 3 litre to 3.5 litre engine swaps. They only car about the cars out there that go from 4cylinder to v8 overnight and don't upgrade the brakes.

I did a brand new engine swap in to mine, engine $1300, labour $0, other bits to get it running $200.. best thing I ever did on the car.

You can however get a used 3.5 engine off of ebay for heaps cheaper and pretty much drop it in and it will work.

Have a look at my ride thread, I put a bit of info in there when I did the engine swap, it will help you decide :)

ill have a loook mate thanks. did you put yours in yourself.? make much difference? did you change the clutch?

ill have a loook mate thanks. did you put yours in yourself.? make much difference? did you change the clutch?

Same flywheel, same clutch, works great. Yes did it myself :)

http://aussiemagna.com/forums/showpost.php?p=1143879&postcount=128
There you go, check it out-

thanks mate so you put in everything yourself how long did it take you? the 3.5's rev less?

whilst both the 6g72 and 6g74 are over-square (bigger bore than stroke), the 6g72 has a 76mm stroke compared to the 85.8mm stroke of the 6g74.

with the mass of the piston moving much less per rev, it makes sense that the 6g72 would be more willing to rev out to 7k or so. that's not to say the 6g74 won't get there, but it takes more energy to move the pistons that fast.

cheers,
.wook

is the 3.5 a better engine to start with for modding?

is the 3.5 a better engine to start with for modding?

I think so.

others disagree.

personal choice really. there are some very big HP 3L engines, and there are some very big HP 3.5L engines.

what are some of the upsides of the 3l?

Depends how much money you want to spend. Bang for your buck would be to put a 3.5 in and start on that. Unless you're going to spend huge and go twin turbo, forged internal 3.0 etc etc

Have you driven a 3.5 manual? I think you'll be happy with just doing a conversion, the extra torque is great! :)

as mentioned, it revs easier.

the 72 came out in a lot of different cars, in a lot of different setups (Twin Turbo, DOHC 24v, SOHC 12v, etc...) which means a lot more people have been modding them. that *should* lead to cheaper performance parts.

http://en.wikipedia.org/wiki/Mitsubishi_6G7_engine

oh ok i see nah i havent drove one but ive been in one evan just being in one i noticed the torque. my 3l used to be preaty good but i think its starting to loose its punch. i think a 3.5 is the way to go ;)

Yes, It is the way to go.

True Mal, I work for transport so I spoke to some of the guys at regency before I did my conversion. The 3.5 is an option in the magnas and is in all the veradas. They really don't care about our 3 litre to 3.5 litre engine swaps. They only car about the cars out there that go from 4cylinder to v8 overnight and don't upgrade the brakes.

I did a brand new engine swap in to mine, engine $1300, labour $0, other bits to get it running $200.. best thing I ever did on the car.

You can however get a used 3.5 engine off of ebay for heaps cheaper and pretty much drop it in and it will work.

Have a look at my ride thread, I put a bit of info in there when I did the engine swap, it will help you decide :)


Do you know how hard it would be to put a 6g72 DOHC in a 2nd gen that had a v6 already? Would it need a form filled out and thats it, or a quick inspection, full inspection, or to be engineered?

You need a change of engine number. if your lucky you can get away with it as its's technically still a 3L 6G72, you *may* need to get it engineered but chances are slim, well, In VIC anyway.

i just changed engine numbers to my DOHC and they were fine about,, didnt ask any q's or anything. The computer system didnt flag any potential issues. Pity its still not in drivable condition at the moment

Mat, Boss wrecking have some low K ones there. I got 6g72 there last weekend, but there were 74's there also on the same pallet and one was one from a 2000 car that looked like a cracker!. They run them hard in the shed before they pull them, if they are crap they just leave them in the wreck, for parts. $600-700 should see you right or I think they will fit one for $1800 if you can't do it your self. And in QLD I'd just stick it in.

I believe the 6G74 is a better start as it has the 4 bolt mains versus the 2 bolt mains of the 6G72. I dont see why you would need rods as the stock items are forged, if its a newer 3.5l with the "skinny" rods, just get the older version "fat" rods. I would love to see someone do a turbo setup on the 3.5l, would be cool, and even better a turbo setup on the 3.5l dohc....hint hint tuffy!! personally i want to put a snail on a 30M version, what a great starting point, more power stock than some get with a supercharger. I reckon 30M engine into jap AWD model plus Turbo = FUN!!!

hey matt if you get an engine ill def help out with the swap, mates rates as well

There ain't no replacement for displacement! 6G75 3.8ltr. I've said it before all of the sohc family are good engine but the extra valve area and displacement of the 6G75 makes it the 1st choice for me.

Cheers Dave

There ain't no replacement for displacement! 6G75 3.8ltr. I've said it before all of the sohc family are good engine but the extra valve area and displacement of the 6G75 makes it the 1st choice for me.

Cheers Dave

yes and after having just fitted one to an AWD, I am now looking hard for a second hand one to drop into my TE, if it goes that hard in the AWD, I am really keen to see how it performs in my FWD

Has made the AWD a desirable car to own now, had Mits made the AWD with this sort of performance in the first place I am sure more would have sold instead of palming off the slug they did with the power of a freakin AstronII

Wish i had known 3.5 was a cheap option, spent nearly 1k fixing a dodgy dizzy

yes and after having just fitted one to an AWD, I am now looking hard for a second hand one to drop into my TE, if it goes that hard in the AWD, I am really keen to see how it performs in my FWD

Has made the AWD a desirable car to own now, had Mits made the AWD with this sort of performance in the first place I am sure more would have sold instead of palming off the slug they did with the power of a freakin AstronII

Is there a thread for this somewhere? Would be something good to read up on. There's a wrecked 380 here and I have a spare sprintex kit sitting around. Photos would be to die for.