So The 6G75 is an unreliable engine.
News to me.

now if it was so unreliable,
Why is it a must have in the improved production Magna's???
Why do many of the guys craving more performance want it???

There is one engine I know of from the forums that let go.

ONE

And it was from Oil starvation caused by the lack of sump Baffles in the 380.
This was becuase of EXTREME cornering on a Race track.
No namby pamby 6G75 has had issues. ECV ticks loudly but nothing in the block

So Please

ENLIGHTEN ME WITH the UNRELIABILTY

Show me the evidence

I REALLY NEED TO KNOW WHAT TIMEBOMB I AM DRIVING AROUND IN

Apparently they cheaped out on big end bearings on early 6G75 engines, something to look out for - but thats the only negative I've heard.

Apparently they cheaped out on big end bearings on early 6G75 engines, something to look out for - but thats the only negative I've heard.

I haven't heard anything about this, would be interested to know where that info came from.

If you mean this: http://www.aussiemagna.com/forums/showthread.php?t=89629&p=1415911&viewfull=1#post1415911

Only thing i can say is reading through threads. The 3.5l does sound like a more reliable engine than the 3.8l.

Then you have to learn to read.

The 3.5L "sounds" like a "MORE" reliable engine than the 3.8L.

It doesn't matter if it's true or not, but I do think you've read way too much into an innocent comment especially when it doesn't say the 3.8L engine is "unreliable" at all.

Chill out a little :)

I haven't heard anything about this, would be interested to know where that info came from.

The IPR guys were swapping out the stock 3.8L bearings cos they were poo quality compared to the 3.5L bearings. Dave TJ has stated that on here a few times and ive seen it with the 3.8L ive been involved with.

I doesnt take much additional work to change out the big end bearings when doing the sump swap anyway (for 3.8L magna fitment) and for the price of decent bearings its cheap insurance just incase in my opinion.

Thanks Jason for clearing it up.

So unless I am bouncing my 6G75 off the rev limiter, not doing regular maintenace and treating the car like shit

I should have NO WORRIES

Thanks Jason for clearing it up.

So unless I am bouncing my 6G75 off the rev limiter, not doing regular maintenace and treating the car like shit

I should have NO WORRIES

For 99% of people on here a well maintained basically stock 3.8L in NA form will be reliable, just like the 3.5L... Add a decent amount boost to a otherwise stock 3.5/3.8 engine though will show up weaknesses in things like bearings, pistons etc. but then that is already well known and effects alot of engines that were not factory forced inducted.

@ Oggy I may have read into an innocent comment but this is the Tech forum

if I said something like the electric supercharger is the most AWESOME thing EVER in my opinion. And there was NO RIGHT OF PROPER REPLY for any one else and was left in a TECH FORUM it raises some questions on the validity of those tech forums

We asked for evidence and those posts were kindly deleted and left with a GUT FEELING POST??

Just want the COLD HARD TECH FACTS not some gut feeling

Thanks Again Jason your Knowledge is INVALUABLE.

Really lucky to have you around here

No need to thank me :)

Its just a case of forum members listening to/reading what other who have worked on these engines talk and write about.
There is always going to be differences in opinions on alot things but at the end of the day that happens in everyday things as well.

They might have cheap bearings but I wouldn't say unreliable. Mine is just about done 40,000km supercharged & I don't drive it like a granny that's for sure ;)

Dammit Mecha I just read through all that drivel to find the second last post is what you were talking about. lol

I'm an apprentice at mitsubishi and in the nearly 8 months I've been there I've only seen one 380 come in with a hole in the sump from a con-rod letting go. The mechanic that did the engine swap was sure the dude was thrashing it hard though. The window regs also like to fail as well :| plenty of those come in.

Chillax mate, no one said the 6G75 was unreliable.

Yeh i never said it was an unrealiable engine people are jumping the gun. Im not gonna go through threads and show u. Look em up yourself in your own time. A couple that i can remember a few high oil consumpion threads lots off ticking noises threads and a few more but im not gonna dig em up. But i just thought id throw it out there

Ticking in the 380 is almost ALWAYS the Emissions control valve. not the motor but a peice of shitty plastic and rubber

High oil consumption from one guy in that thread.
I have driven my 380 up and down the length of the East coast and not had any consumption issues. I dont mess about either

I hope this clears up some of the SO called issues

Any more you want me to clarify??

Modern engines are very reliable, given developments in metallurgy, oils, and many decades of experience in bolting the things together. The 380 motor would be just as reliable as any modern engine. Now if you want to talk about unreliable engines from Mitsu, lets talk about the original Astron engines in the Sigmas. On second thought, lets not . . . lol

Love the ASTRON!

Unreliable?
The astrons were heaps reliable, they just were a shitter of a motor. They were loud, leaky and lacked power, but they kept on going and going and going....

My dad's Sigma and my first gen Magna are testament to the abuse that the Astron series motors can take without dying.

As my dad said to me before he sold his Sigma to a wrecker "I'd buy another one of these if they made them brand new"

RIP Astrons

ASTRON disasters:
cracked block. Drop welsh plug, cook motor.
broken big end bolt, rod through side of block.
weak rings, burning oil before 160,000 km.
soft head material, receding head bolts.
balance shaft bearing seizing up.
chains and guides wearing out.

Mmmm - don't think I ever got a Sigma up to 200,000 km without major engine problems.

with the Pajero clubs, they are saying the 3.8's are a LOT more reliable than the 3.5's :)

FYI.

Unreliable? Since when????? Mines been great so far (110,000km). I'd be more concerned about mitsu auto boxes failing before the motor does.

Unreliable? Since when????? Mines been great so far (110,000km). I'd be more concerned about mitsu auto boxes failing before the motor does.


Its not, I was making a point about misinformation in a Tech forum based on a gut feeling

ASTRON disasters:
cracked block. Drop welsh plug, cook motor.
broken big end bolt, rod through side of block.
weak rings, burning oil before 160,000 km.
soft head material, receding head bolts.
balance shaft bearing seizing up.
chains and guides wearing out.

Mmmm - don't think I ever got a Sigma up to 200,000 km without major engine problems.

Must have been bad luck? Maybe you're not so lucky with the mitsubishis? Maybe not too good mechanically?? Your started threads seem to be about TS magnas that have constant problems...

Anyhoo...

Must have been bad luck? Maybe you're not so lucky with the mitsubishis? Maybe not too good mechanically?? Your started threads seem to be about TS magnas that have constant problems...

Anyhoo...

Food for thought there! lol Maybe I should get a Commodore and start doing hectic burnouts, bro?

hahahaha :p
seriously though, the Pajero guys/wreckers/repairers have been saying that they have ooodles of 6g74 pajero's that have blown blocks (bearings funny)
ironically a recent story is that the 3.8L blocks of rolled 4x4's don't sell...so you can pick them up for nothing (comparitively)
ironically there are meant to be plenty of 380's with snapped cranks.

all hearsay and un-substantiated with hard figures.

Are you serious?! Which wreckers has 3.8L motors that sell for literally nothing?!

I'l love that info as well lol

I thought a certain percentage of 380 engines had oil consumption problems?

Well apparently a few people have experienced oil consumption with their 380 motor, only for it to completely disappear after the next service from Mitsubishi. Could this just be a bad batch of oil used?? Maybe wrong
Viscosity??

I seriously can not believe this trifle is still going on

There were about 44k 380's made. If these were such bad engines I am sure we would have found out long ago

I have fitted many to magnas with no issues, have plenty customers with 380's anfd again no issues

In pre production I believe were bore issues as well as big end bearings being a little tight but also have been told very few of these made it into production cars anyway

This thread was simply made as an attempt to argue a single statement with another member and has proven to be about as worthwhile as watching grass grow with no valuable info at all and more talk about other parts and motors than the topic was about in the first place

Its not, I was making a point about misinformation in a Tech forum based on a gut feeling

Too right Mecha.

At the end of the day a car is only as reliable as its service record

Interesting info mal. Is there any known info on consumption problems with the Outlander 6B31 v6 engine?

my dads 380 (150,000ish kms) uses oil to the point it doesn't register on the dipstick between services.
Series 3, driving instructor so its on the go a fair bit.
He had a TW magna which used no noticeable oil between services (sold it with over 300,000kms)

What oil is he using? Has he tried switching to something else?

Clackers i would check it hasnt got the consumption problems mentioned above

Ive had people claim an engine is unreliable, then when ask how often they service it, they say "when it breaks". on the cnc machines at work, regular service is vital, and the same applies to vehicles.

my dads 380 (150,000ish kms) uses oil to the point it doesn't register on the dipstick between services.
Series 3, driving instructor so its on the go a fair bit.
He had a TW magna which used no noticeable oil between services (sold it with over 300,000kms)

Perhaps he should consider a slightly thicker oil?

Apparently the amount of oil it has been using is in the "normal" range according to Mitsubishi.
It gets serviced at a dealer so its whatever oil they use for logbook services (usually at mt barker)

5W-30 magnatec usually from a dealer (sydney dealers tend to use it alot) but depends on the deal they have going