Hay fellas

Have been doing alot of reading about the 6G75 engine since being fitted to my vehicle. Came across this thread on another car forum witch has worried me and want someone to ease my mind lol.

Admin Edit:
[Link to some random car forum removed]

Thankyou

Wouldnt be a huge concern as i havent heard of it in australia yet

Yeah, i heard about this, im putting one in my AWD TL and also own a TMR 380 so maybe ill do this

Hay fellas

Have been doing alot of reading about the 6G75 engine since being fitted to my vehicle. Came across this thread on another car forum witch has worried me and want someone to ease my mind lol.

Admin Edit:
[Link to some random car forum removed]

Thankyou

Yep, read that too. The engines referred to as failing are not in your common drive-to-the-shops 380s, most are supercharged/turbocharged/full on competition engines.
That thread implies that under heavy load, the main bearing bolts stretch, causing main bearing failures. The same failures have also been attributed to oil surge during high "G" cornering, ie once again, competition use. It's common for street engines to show weaknesses in competition use.

Don't thrash your car, drive it like you love it, and everything will be hunky-dorey.

Yeh cause i heard of the early model 3.8l engines having some bearing failures but mitsubishi fixed this in the later model 3.8l. Wonder if this was the bolt problem causing the bearings or the bearings them selves. Its a little bit off a worry. Bloody 3.5l didnt have these little glitches.

Anyone know what the cost could be to do this if need be

http://www.rpw.com.au/shop/index.php?page=shop.product_details&product_id=2151&category_id=917&flypage=flypage.tpl&option=com_virtuemart&Itemid=1

Can anyone confirm of these are the bolts this guy is talking about?

I have prepped over 30 of these motors and have countless 380 customers and am yet to see this trollip

Sure, if you put your car on a track every weekend perhaps then maybe but for street use a waste of time and money

Look at the guy who works for me, he drives his 6g75 Verada fairly hard all the time, 12 months on and not an issue at all. Another has big cams and again gets driven hard, was the first one I fitted nearly 3 years ago, again no issues.......

If you are charging the motor then of course you need to beef it up but most are na

Don't panic.

I think it is really something to be aware of if you are pushing big revs regularly, (or if you are getting a motor built anyway maybe consider it as a 'insurance policy if not too dear').

In a stock motor there is really no need to rev it that hard though, even with my cams there is not much need to rev past 6200, because after that you are dropping outright power anyway.


Treat it as an option not a necessary item.
Look at you needs/driving habits, and weigh that against the costs of any modification.

Don't panic.

I think it is really something to be aware of if you are pushing big revs regularly, (or if you are getting a motor built anyway maybe consider it as a 'insurance policy if not too dear').

In a stock motor there is really no need to rev it that hard though, even with my cams there is not much need to rev past 6200, because after that you are dropping outright power anyway.


Treat it as an option not a necessary item.
Look at you needs/driving habits, and weigh that against the costs of any modification.

:stoopid:, could not agree more. it looking like an easy fix as well

Don't panic.

I think it is really something to be aware of if you are pushing big revs regularly, (or if you are getting a motor built anyway maybe consider it as a 'insurance policy if not too dear').

In a stock motor there is really no need to rev it that hard though, even with my cams there is not much need to rev past 6200, because after that you are dropping outright power anyway.


Treat it as an option not a necessary item.
Look at you needs/driving habits, and weigh that against the costs of any modification. i agree also , ofcourse if you consistantly redlining it somethings got to give, so the weakest link obviously is these bolts

Fooz has done something like 50,000km on his supercharged 380 and hasn't had the need to open the motor (yet)...

Fooz has done something like 50,000km on his supercharged 380 and hasn't had the need to open the motor (yet)...

Yep 53K actually & don't have a problem holding it to 6000 with the tippy instead of letting it change lower on the auto.

Yep 53K actually & don't have a problem holding it to 6000 with the tippy instead of letting it change lower on the auto. Do you have stock internals Fooz?

Do you have stock internals Fooz?

Yep never opened the engine

For some reason me thinks its not the revs that affect but it's the pressure of the charger-turbo on internals. IPRA guys rev neally 7500rpm on stock internals n/a.

For some reason me thinks its not the revs that affect but it's the pressure of the charger-turbo on internals. IPRA guys rev neally 7500rpm on stock internals n/a.

Almost certainly. I cant see centrifugal forces causing that kind of failure alone. It would surely be the dramatic increase in compression pressure as the turbo spools up

Maybe it s a random thing, maybe engines that were assembled on a monday and the dood tensioning the bolts missed a couple, i dont know, but it seems to be more in the US by the sounds