Has any1 actually done this,or know of any1 who has done this as i'm keen to know for when i Eventually :roll: :roll: Recon my 3.5L
Any help would be great 8)

yeh i wanna do this to my 3.0l craig. check out rpw's engine upgrades. bit hefty thou

Trav

Yeh,sounds like an idea goin thru them,but i'm defenitely gonna be price hunting when the time comes,especially if it means a few hundred or more Dollars 8) 8)
Good idea Trav,how much did u want it bored to?3.5,Less?

if your in WA why not go with RPW. id trust them with my car more so then a work shop who doesnt work on mitsubishis all day...

just a thought...good luck stroking...

Yeah,but there are more than jus RPW,Though of course they are on the top of my list of Preferred to go to get it done.It jus all comes down to the cost and how much more power i can get stroked out of it 8) 8) 8)

hmm, i remember someone saying in the forum that the 3.5L is actually a stroked (or was it bored??) version of the 3.0L. if it's true, i would think that the engine block has already maxed out on it's 'cc potential'. further work on the size of the cylinders might weaken the engine block too much. not advisable [-X

Yeh it is Actually a 3 Litre bored out to a 3.5 L,if that's the case can anythin else be done?
PRolly have to go Emanage,Extractors etc

It's a bit of both.

It's not maxed out, but you'd have to go a completely custom built crank, and unless you're making it a serious drag car, it's not worth it.

You can bore and stroke the 3.5 out to 3.8 utilising the stock crank and going oversize on teh pistons without going through the walls.

We have done this to several 3.5 DOHC pajero engines (Same engine block) and the 3.0 engine we can modify out to 3.3 litres using same principles.

Not going to say how - :) have to keep some secrets.

But any cubic increase is worth torque which is always good.

Add it with some of our higher compression pistons, strengthened conrods and you have a very strong engine on your hands.

You can bore and stroke the 3.5 out to 3.8 utilising the stock crank and going oversize on teh pistons without going through the walls.

We have done this to several 3.5 DOHC pajero engines (Same engine block) and the 3.0 engine we can modify out to 3.3 litres using same principles.

Not going to say how - :) have to keep some secrets.

But any cubic increase is worth torque which is always good.

Add it with some of our higher compression pistons, strengthened conrods and you have a very strong engine on your hands.
and the complete cost ??

You can bore and stroke the 3.5 out to 3.8 utilising the stock crank and going oversize on teh pistons without going through the walls.

We have done this to several 3.5 DOHC pajero engines (Same engine block) and the 3.0 engine we can modify out to 3.3 litres using same principles.

Not going to say how - :) have to keep some secrets.

But any cubic increase is worth torque which is always good.

Add it with some of our higher compression pistons, strengthened conrods and you have a very strong engine on your hands.
Do u have a rough Estimate on the Price of getting this done??
Won't Be for a long while yet,but i Will keep you guys in mind for when the time comes to get this sort of thing done :D :D

Yup I'm interested in this too..

It normally costs around $2000.00 to fully remanafacture one of these motors and its worth aruond an extra $1000.00 to do the additional work to modify it out the extra 0.3 litres ie from 3.5 to 3.8 litres.

Prices vary according to what people have done at the time so this is a rough guide only

You can bore and stroke the 3.5 out to 3.8 utilising the stock crank and going oversize on teh pistons without going through the walls.

We have done this to several 3.5 DOHC pajero engines (Same engine block) and the 3.0 engine we can modify out to 3.3 litres using same principles.

Not going to say how - :) have to keep some secrets.

But any cubic increase is worth torque which is always good.

Add it with some of our higher compression pistons, strengthened conrods and you have a very strong engine on your hands.

Ahh I stand corrected...I thought they were already maxxed out.

[quote:f29e272c29="Mitsiman"]You can bore and stroke the 3.5 out to 3.8 utilising the stock crank and going oversize on teh pistons without going through the walls.

We have done this to several 3.5 DOHC pajero engines (Same engine block) and the 3.0 engine we can modify out to 3.3 litres using same principles.

Not going to say how - :) have to keep some secrets.

But any cubic increase is worth torque which is always good.

Add it with some of our higher compression pistons, strengthened conrods and you have a very strong engine on your hands.
Wheeew lucky u were wrong man 8) 8) 8)
Ahh I stand corrected...I thought they were already maxxed out.[/quote:f29e272c29]

It normally costs around $2000.00 to fully remanafacture one of these motors and its worth aruond an extra $1000.00 to do the additional work to modify it out the extra 0.3 litres ie from 3.5 to 3.8 litres.

Prices vary according to what people have done at the time so this is a rough guide only
In Doing this,does this Overhaul-recondition like the engine?
And has the Power been Put up Substantially with tis Done?
Thanx 8)

Yes the engine is reconditioned in the process with new pistons rings etc.

Like anything it all adds up but we usually at the same time stick the high compression pistons in 10.0 : 1 etc and with good mods you would be looking at an easy 220kw engine.

with good mods you would be looking at an easy 220kw engine.

Sh!t that's good power for your money...

Yes the engine is reconditioned in the process with new pistons rings etc.

Like anything it all adds up but we usually at the same time stick the high compression pistons in 10.0 : 1 etc and with good mods you would be looking at an easy 220kw engine.
That's the kinda Power i'd Want and it Being Recond at the sametime,makes it a perfect option for what i'm looking for,If the Cost,like you stated B4,as a rough $3000 all up,then I might be looking into getting a 5 Speed put in too,Do u have a rough Guesstimate on the price of that too,Cause Mitsi's in Melville quoted me $4000,jus wondering about ur price 8) 8)
Appreciate all this Dave,thanks mate ;)

Couldn't comment on the manuel conversion as not having done one before I really could not say.

$4000.00 seems about right at a guess

phwoar 3.8ltr twin turbo magna W00t w00t

:badgrin: :roll:

phwoar 3.8ltr twin turbo magna W00t w00t

it'd be nice, especially if it was the AWD model, imagine the torque steer in the FWD models :?

Couldn't comment on the manuel conversion as not having done one before I really could not say.

$4000.00 seems about right at a guess
Ahk that's Kewl
Thanx for the help so far man ;)

When will the process be available?

Interesting. Hmm, now, whether to obtain a current gen Magna with the 3.5L and bore/stroke it out or wait until 2005 and have the 3.8L engine bored/stroked to around 4.1L or so? Decisions, decisions... :badgrin:

Interesting. Hmm, now, whether to obtain a current gen Magna with the 3.5L and bore/stroke it out or wait until 2005 and have the 3.8L engine bored/stroked to around 4.1L or so? Decisions, decisions... :badgrin:
Yeh i was thinkin orf that too but i'd say that when that Engine can be Bought seperate.It'd Cost heeeeeps orf $$$$
3.5L are jus over 4 Grand alone,New :shock: :shock:
So Boring and Stroking a 3.5L will be my option,hopefully [-o<

[quote:55d980999d="fysh"]phwoar 3.8ltr twin turbo magna W00t w00t

it'd be nice, especially if it was the AWD model, imagine the torque steer in the FWD models :?[/quote:55d980999d]

Heh heh. Torque steer just adds to the fun!!!

Hmm 220kw out of a 3.8. With appropriate mods of course. Not a bad little number is it? Whack on a turbo or two and kick some ass.
HA HA
:badgrin: :badgrin: :badgrin:

Thats actually cheap to have that work done dave, good stuff, my mate had his pajero done and cost around $2800.oo and this was mates rates, so 3k for this is well worth the money.

Hey on the subject could a 2.4l be bored and stroked much more???

Hey on the subject could a 2.4l be bored and stroked much more???

What do you want? A 3.0l 4 cyl? :lol:

Thats actually cheap to have that work done dave, good stuff, my mate had his pajero done and cost around $2800.oo and this was mates rates, so 3k for this is well worth the money.

Hey on the subject could a 2.4l be bored and stroked much more???
Yeh i'd say u could 4 sure,1 orf my mates is gettin his TR astron II motor bored out to a 2.8 and gettin a Turbo done etc.Thru Dave,so i don't see why not 8)

ok mitsi man u said 10.01 compresion piston wil lthis be ok for 98 ron fuel or premium or would we have to add octane booster

Yes we modify the 2.4 out to 2.7 litres with boring and stroking.

Yes you cna run 10 : 1 pistons on premium if the car is tuned properly.

phwoar 3.8ltr twin turbo magna W00t w00t

:badgrin: :roll:

5-speed manual 3.8ltr twin turbo awd magna. *drool*

Interesting. Hmm, now, whether to obtain a current gen Magna with the 3.5L and bore/stroke it out or wait until 2005 and have the 3.8L engine bored/stroked to around 4.1L or so? Decisions, decisions... :badgrin:

The new 3.8 *is* a 3.5 bored and stroked. So I'm guessing it'd be near it's limit, probably 1 or 2mm off being at max bore

Yes you cna run 10 : 1 pistons on premium if the car is tuned properly.

or you can run 13.1 to 1 like booya :badgrin: :roll:

hehe... i love high compression!! its awsome! you saw it dan, sounds and goes like hot shit! 8)

Gee, Ben. All you need is Nick's stage two camshafts and your car will really be like a diesel!

13.1:1? Man, that's high!

Gee, Ben. All you need is Nick's stage two camshafts and your car will really be like a diesel!

13.1:1? Man, that's high!

stage 3 grinds on the way ;) 8)

booya when was the last time you put your car on a dyno how much power does your car male at the moment?

After speaking with various insurance companies over the last few days I think staying N/A (i.e no Turbo!) is the way to go for me (atleast for the moment) to save some money on insurance each year etc

With such an engine (3.5L --> bored out to ---> 3.8L) what other N/A mods would yeiled the best torque and overall hp increases combined?

Extractors, Stage 1 Cam, Oversize (or Twin) TB, rising rate FPR (FSE) etc???

Anything else i'm missing...all suggestions/thoughts welcome.

cheers

Wasnt the 3L originally bored or stroked to 3.5, and now the 3.5 to 3.8?

Seems like the 3L had a lot of spare metal :shock:

yeah i think u might be right!! now that u think of it, the 3.0's and 3.5's look exactly the same from the outside

Wasnt the 3L originally bored or stroked to 3.5, and now the 3.5 to 3.8?

Seems like the 3L had a lot of spare metal :shock:

Yep...I said that earlier ;)

So theoretically its possible to go from 3.0 to 3.8?

:badgrin: :badgrin: theoretically.. wots the answer to this? :badgrin: :badgrin:

Different head on the 3.5litre right?? Perhaps you'd need to grab a head off a 3.5L to do this?

Well there's a guy in the US that made the sohc 12v 6G72 into a 4 litre...so I would assume it's possible. The 3.5 came from a 3.0...and the 3.8 came from the 3.5...it's logical.

The 3.0 SOHC 24v and 3.5 SOHC 24v heads are the same.

The camshafts are different and before any one asks - no they cannot be interchanged

if you had a 3 litre mivec, could you then bore that to 3.5 or 3.8 ?

The 3.0 SOHC 24v and 3.5 SOHC 24v heads are the same.

The camshafts are different and before any one asks - no they cannot be interchanged

But a long time ago you once posted some people where using the 3.0 cams on the 3.5s?

i dont know redav, would it?

Yes the engine is reconditioned in the process with new pistons rings etc.

Like anything it all adds up but we usually at the same time stick the high compression pistons in 10.0 : 1 etc and with good mods you would be looking at an easy 220kw engine.

How many kms b4 a 3.5L would be worn out enough to rebuild it to these specs being cost effective?

I would say 220,000 would be the earliest you would need to do this sort of work. I've seen the magna V6's go to 290,000kms without a hitch providing they are regularly serviced.

But if the 3.0 is the "yard stick" engine and then the 3.5 and 3.8 and just variants, wouldnt it stand to be logical that the 3.0 is the strongest engine out of the bunch? Unless of course the crank and conrods in the latter engines and much more refined.

would the engines be done as swap or would u have to send ya engine to rpw den sent back ??

The 3.5 is a different block to the 3.0.

The coupla of differences I know of are, its taller and the main bearing housings are retained by 4 bolts each, not 2 like in the 3 litre.

The sump and heads are the same bolt pattern thou so it is very similar, but it is not the same.

RPW doesn't have to do it (although it would be nice if they did) but any good engine builder can rebuild and engine to your specifications.

The 3.5 is a different block to the 3.0.

The coupla of differences I know of are, its taller and the main bearing housings are retained by 4 bolts each, not 2 like in the 3 litre.

The sump and heads are the same bolt pattern thou so it is very similar, but it is not the same.

First everyone says its just a bored/stroked version, now you are saying its a different block? lets all work out our storys before posting shall we lol

lets all work out our storys before posting shall we lol

I don't need to work out anything. I know its different. Have a look at the service manual, and you will see what I mean. Yes the 3.5 has a slightly bigger bore, and also has a longer stroke, most of the external components are bolt on (the same). The block is 'taller' to cope with the extra stroke!!

Just ask those with extractors on the 3.0 if the block is different.

tooslow is spot on. While both the 3.0L and 3.5L motors are essentially the same, the 3.5 has a taller block as a result of the longer stroke.

I would say 220,000 would be the earliest you would need to do this sort of work. I've seen the magna V6's go to 290,000kms without a hitch providing they are regularly serviced.

Oh well another 5yrs at this rate!

Another question, The orange light shaped like an engine in the dash comes on from time 2 time and it wont start. You have to turn the key on and off a few times or a lot. Mitsubishi can`t find a prob. Can you help?

According to RPW the cams from 3.5 will fit the 3.0 and visa versa. Below is the reply to an email i sent to RPW about Stage 1 cams....
RPW.....
"The new cams we now manafacturer are a multifit camshaft and could be swapped
back into the 3.0 engine yes.
But these would take approx 4 weeks to manfacture.
These cams do not require valve springs."

----- Original Message -----
> Hi!
> I am soon to contact one of you Melbourne distributors to purchase a set
of \"RPW Stage 1 Cams\" for a 1999 TH 3.5 Magna Sports. When I sell the car
in a year or so I plan to swap the cams into my TF 3.0 Sports. Will they be
a straight fit from the 3.5 to the 3.0 or would I need to modify them or
purchase a different set specifically for the 6G72 3.0?
> Would the cam timing need to be altered for the 6G72 3.0?
> Also would you recommend new valve springs with these cams for both 6G72 &
6G74 & if i purchase new valve springs can I swap them over to 3.0 later?
......

so it seems if the Stage 1 cams are "Multifit" and can be swapped from 3.5 to 3.0 then you could fit ralliart magna cams to a 3.0 (though i would recommend the valve springs as well)...

RPW will be making those cams multifit. But the ralliart cams will not go into a 3.0 head. You can put a 3.5 head on the 3.0 engine and then run them, that was the word from Dave when he posted b4 about the dissy drive gear being slightly different.

So mitsi denuine 3.5 cams will not fit a 3.0 and vice versa, but you can just swap the heads over!! :) Althou, I would investigate this as the 3.0 runs 13 deg BTDC timing whereas the 3.5 runs 10 deg BTDC. So if the TDC sensor on the cam (in the dissy) is not in the same spot (could be why mitsi put the differences in there) the computer will get incorrect signals.