6G75 forged engine - Club4G Forum : Mitsubishi Eclipse 4G Forums - 2006-2012 Eclipse Authority

z80 · February 25th, 2011, 06:13 AM

Hey guys I am in Australia.

Been lurking around the forum here for a while.

I don't own any of the vehicles hosted here but we have a model 380/9g that uses a 6g75 as some of yours here have.

So in case anyone is interested I have finished a build of a forged 6G75.
It's all forged, balanced,ported and is ready to go in the car in two days.

I waited and watched another similar thread on here but it has been quiet for a few months there so here is my build.

It's my first build so go easy on me.

It's a supercharged vehicle already and I want to increase from 7 psi with stock internals to 12 psi with fully forged internals.

The engine reconditioner tells me it is bullet proof/indestructible.

It may be of interest to some.

I elected to have custom forged pistons made up, instead of reboring the block to fit the pistons, each piston is mated to the block.

The rods are huge and the crank already forged has been Nitride treated to a depth that is obscenely hard.

Heads are all polished,ported etc etc

Here are pics of the engine at the rebuilders workshop.

Interestingly the best con rods came from a US company and are same rods as they supply for a 6G74 engine...worth noting.

enjoy!

Here are a few happy snaps in random order for your enjoyment.

The entire engine will be fully balanced, the crank is away being Nitride treated at the moment.

the man

the other man

6g75 sump showing baffles

more of the same

the block, no lip which is great

another view of the block

heads

another heads pic

old pistons etc, still perfectly serviceable.

oil pump mechanism

old and new piston comparison

another old and new comparison

The bolts are stamped ARP

kit of bits

another kit view, rings etc...rings are cast by the way, as per the stock rings

note the new rod's busihing, the pin is tapered inside to reduce weight.

Pauter logo

note the massive improvement in material mass

z80 · February 25th, 2011, 06:17 AM

more ring views

rods again

where do you get it?

z80 · February 25th, 2011, 08:59 AM

Here is the engine bay that the motor will be going into.

(The forged 6G75 is a spare engine)

Note the Sprintex supercharger at the rear next to firewall...

Will be going from 7 psi to 12 psi

NitroGlisson · February 25th, 2011, 09:02 AM

Sweet! Thanks for sharing that with us. I'd be interested in seeing more of that SC application. Please update as you progress.

DarkSidEclipse · February 25th, 2011, 09:11 AM

Quote:

Originally Posted by NitroGlisson

Sweet! Thanks for sharing that with us. I'd be interested in seeing more of that SC application. Please update as you progress.

Don you can check it on RPWs website as well. Thats the 380 with a Non Mivec 75 that comes stock Super Charged

Isamu · February 25th, 2011, 09:20 AM

would that S/C fit in the eclipse?

sample07 · February 25th, 2011, 09:46 AM

Sweet work. I'd be interesting in seeing the list of parts you swapped out for the motor build.

joeyb · February 25th, 2011, 10:03 AM

awesome man just awesome. thanks so much for the great pictures z. +rep

Isamu · February 25th, 2011, 11:06 AM

Quote:

Originally Posted by sample07

Sweet work. I'd be interesting in seeing the list of parts you swapped out for the motor build.

same engine, just a spare one being dropped in from what it sounds like

DarkSidEclipse · February 25th, 2011, 11:36 AM

Quote:

Originally Posted by Isamu

would that S/C fit in the eclipse?

Im sure it would RPW offered it at cost if anyone wanted to test it, but no one has taken them up on it yet

And that why there are still only 2 turbod GT's and one option for a Super Charger for some reason everyone is afraid to be the first to do something

tjh · February 25th, 2011, 05:29 PM

I thought RRE tested that sc and it did not fit due to the firewall in the eclipse

z80 · February 25th, 2011, 05:59 PM

Quote:

Originally Posted by sample07

Sweet work. I'd be interesting in seeing the list of parts you swapped out for the motor build.

-pistons custom made by SPS forgeing company in Australia.
-rods from the US..."Pauter" brand
-arp rod bolts
-nitride treatment on crankshaft
-CNC heavy duty bearing shell
-balancing by removing crank material,replacing with heavier mass dowel
-head port and polish
-cams untouched
-stock head gasket
-8.5 static compression ratio
-sump gaskets,etc...stock
-cast rings supplied by pauter

-no rebore, measurement of each bore and custom piston each cylinder.
-light hone, engine had only done 25k miles out of a wreck.

Hope that's clear enough.

z80 · February 25th, 2011, 06:07 PM

Quote:

Originally Posted by tjh

I thought RRE tested that sc and it did not fit due to the firewall in the eclipse

If I owned an Ecllipse i would modify the firewall to make it fit.
I have that much satisfaction in the performance of the unit.

It comes with a piggy back ECU..a perfect power SMT6 which drives a 7th injector to dump fuel in the manifold on large power demand.

The supplied ECU mapping out of the box just works on our cars.
The piggy back kit does have a version that you can tune your own maps yourself.

Here is my stock one, power is so smooth and no violence.

It's tuned for street use, not the drag strip.

It has a LSD so takeoffs are superb....something that is a must for FWD cars...note no torque steer, camera is on steering wheel.

Remember its a 9G, your car is much lighter and would fly like a rocket in comparison.

YouTube - Redblower's Channel

anyway...just wanted to talk about the engine forgeing cause doesn't seem to be anyone on the net that has posted about finishing it yet.

z80 · February 25th, 2011, 06:33 PM

Quote:

Originally Posted by DarkSidEclipse

Don you can check it on RPWs website as well. Thats the 380 with a Non Mivec 75 that comes stock Super Charged

Close, but not quite accurate.

My car has had the supercharger added after it left the factory.

The factory fitted ones only came in 20 cars, they are collectors items, most went into museums and private collections and never get driven.

The car pictured in the start of this thread is not a TMR380....it is a stock 9G GT with accessories added to bring it near the same spec.

TMR - Team Mitsubishi Ralliart sold me the supercharger kit.

I would not perservere with RPW, they are..err...in a different league.

Having said that...I do own a TMR380 as well...just rarely drive it.

The GT is my daily driver and dont really want to put a lot of miles up on this TMR380...it's too rare to fiddle with.

I fiddle with the dark red GT...more boost...forged...LSD...AWD...

Here's some pics , don't drive it much.

z80 · February 25th, 2011, 06:37 PM

Anyway...a forged 6G75 can be done, has been done.

And it's not rocket science either.

So get on with it guys, turbo charge it if that's easier.

If your engine builder has any questions call this man, very helpful and did the job..

Rob Rennie
Engineworx Pty Ltd
phone 61-3-52672150

Australia.

cya

DarkSidEclipse · February 25th, 2011, 06:59 PM

Quote:

Originally Posted by tjh

I thought RRE tested that sc and it did not fit due to the firewall in the eclipse

Not the RPW SC just a roots SC

DarkSidEclipse · February 25th, 2011, 07:03 PM

Thanks for the info I did not know they only made 20 of the ralliart version. There are a couple guys who working on building forged 75's right now. There is also a guy with a Vortec SC that bored it out to 4.0

Question since you are from AUS the statement you made about RPW? Is there something you can shed some light on, or something we should know?

joeyb · February 25th, 2011, 08:07 PM

so that roots blower is stock right? how has it treated you?

TwilsonD7 · February 25th, 2011, 08:15 PM

Didn't RRE test the alpIne supercharger, not this one. And we know forged is possible. There's one already out there and another 8 coming this summer. You can push way more then 12 psi.

TwilsonD7 · February 25th, 2011, 08:17 PM

Big problem the eclipse guys are having was heat issues. And you running stock header??

joeyb · February 25th, 2011, 10:48 PM

holy crap man good call, tom - no long tubes, z?

also - how does that roots-type sound? one of the reasons I love the Vortech centrifugal type is b/c it sounds like mad max and the knight rider.

ALBOE · February 25th, 2011, 11:16 PM

Quote:

Originally Posted by TwilsonD7

Didn't RRE test the alpIne supercharger, not this one. And we know forged is possible. There's one already out there and another 8 coming this summer. You can push way more then 12 psi.

and one in the spring (;

DarkSidEclipse · February 26th, 2011, 12:27 AM

Quote:

Originally Posted by TwilsonD7

Big problem the eclipse guys are having was heat issues. And you running stock header??

Quote:

Originally Posted by joeyb

holy crap man good call, tom - no long tubes, z?

also - how does that roots-type sound? one of the reasons I love the Vortech centrifugal type is b/c it sounds like mad max and the knight rider.

Yes you can see it. He is using the TMR Kit, which actually came on the TMR 380 stock @ 7-8 psi

Oh and joey if you have heard a Mustang, Vette, Dodge, or GTP that is what it sounds like

That his car

http://www.youtube.com/watch?v=zwlutWC59sQ

z80 · February 26th, 2011, 03:04 AM

Quote:

Originally Posted by TwilsonD7

Big problem the eclipse guys are having was heat issues. And you running stock header??

Nope stock header has twin precats.

Kit i am using has twin mandrel bent pipes with Euro4 emissions compliant fitted rear cat back with relocated lower O2 sensors behind it.

Fully emissions compliant...just louder,breathes better and more power.

about 20hp more just by doing that.

z80 · February 26th, 2011, 03:08 AM

Quote:

Originally Posted by joeyb

holy crap man good call, tom - no long tubes, z?

also - how does that roots-type sound? one of the reasons I love the Vortech centrifugal type is b/c it sounds like mad max and the knight rider.

The sprintex supercharger manufacturer claims that the volumetric efficiency of their blower is higher than anyone elses...that means charge temperature is lower.

With the bullet proof engine i will put it to the test.

But...am having "Laminova " cores fabricated into the plenum chamber as an IC solution just in case.

read about laminova cores here from the Aus distributor, am sure you have one in the US as well.

Laminova Intercooler Tech

z80 · February 26th, 2011, 03:11 AM

Did I mention i have a custom LSD in my auto?

It's a must with that much power.

The Quaife QDH7B is the best for our drivetrains.

But it needs machining of the crown wheel, the splines on the driveshafts need resetting and case hardening.

No wheel spin or torque steer though...

Just noticed it's 4 am in the US and 8pm saturday night here in Aus....LOL

ALBOE · February 26th, 2011, 04:09 AM

haha! I need to purchase an LSD

MitEclipse07 · February 26th, 2011, 09:06 PM

^ Ya i second Alboe's post. I need one to. Question for ya Z, how much did you pay for the LSD? U.S. Dollar please lol. Get a good deal from anyone in particular for the LSD?

dejectedangle · February 26th, 2011, 09:24 PM

Just wondering y you did not do a overbore? Also what kind of rings did u use like stainless steel chrome plated or what??? Nice build if your going to do over 10 psi I have heard you need stronger valve springs idk if ur doin head work or not...

Please get your car up and runnin and do 15 psi man I want to see it alive

dejectedangle · February 26th, 2011, 09:27 PM

Oo sorry what compression are the pistons

roy_robinsonV · February 26th, 2011, 11:15 PM

Man them stock rods make me nervous

z80 · February 27th, 2011, 07:15 AM

Quote:

Originally Posted by MitEclipse07

^ Ya i second Alboe's post. I need one to. Question for ya Z, how much did you pay for the LSD? U.S. Dollar please lol. Get a good deal from anyone in particular for the LSD?

You are looking around the 1300 dollar mark for the Quauife QDH7B.

z80 · February 27th, 2011, 02:34 PM

Quote:

Originally Posted by dejectedangle

Just wondering y you did not do a overbore? Also what kind of rings did u use like stainless steel chrome plated or what??? Nice build if your going to do over 10 psi I have heard you need stronger valve springs idk if ur doin head work or not...

Please get your car up and runnin and do 15 psi man I want to see it alive

rings are cast, no need to bore, easier to forge pistons to bore size according to the machinist, valve springs are fine apparently...

z80 · February 27th, 2011, 02:34 PM

Quote:

Originally Posted by dejectedangle

Oo sorry what compression are the pistons

stock is 10:1 new pistons are 8.5:1

z80 · February 27th, 2011, 02:35 PM

Quote:

Originally Posted by roy_robinsonV

Man them stock rods make me nervous

they are the weakest link, but bearings are as well.

All addressed in this build...hopefully

z80 · March 1st, 2011, 04:59 AM

The key was turned at 5:30 this evening and the engine roared into life...first time.

Just sounds like a new engine, no rattles or whistles...just a smooth whine.

Unfortunately the smaller supercharger pulley was machined all wrong and doesn't fit.

So will just be running around on 7.5 psi still.

Probably won't hurt to run it on a proven relieable boost for a week or so...

ALBOE · March 1st, 2011, 06:04 AM

great news! Can't wait to see the end result (:

Isamu · March 1st, 2011, 06:33 AM

oh! does that mean we get a sound clip, or vid soon?

z80 · March 1st, 2011, 04:56 PM

Quote:

Originally Posted by Isamu

oh! does that mean we get a sound clip, or vid soon?

you can always go here and check out the other clips.
the 5 psi clip is there and a few others.

YouTube - Redblower's Channel

MitEclipse07 · March 9th, 2011, 10:06 AM

any new updates with this Z?

February 25th, 2011, 06:13 AM	#1 (permalink)
z80 Member Join Date: Dec 2010 Vehicle: 380Gt Posts: 55 Rep Power: 2	6G75 forged engine Hey guys I am in Australia. Been lurking around the forum here for a while. I don't own any of the vehicles hosted here but we have a model 380/9g that uses a 6g75 as some of yours here have. So in case anyone is interested I have finished a build of a forged 6G75. It's all forged, balanced,ported and is ready to go in the car in two days. I waited and watched another similar thread on here but it has been quiet for a few months there so here is my build. It's my first build so go easy on me. It's a supercharged vehicle already and I want to increase from 7 psi with stock internals to 12 psi with fully forged internals. The engine reconditioner tells me it is bullet proof/indestructible. It may be of interest to some. I elected to have custom forged pistons made up, instead of reboring the block to fit the pistons, each piston is mated to the block. The rods are huge and the crank already forged has been Nitride treated to a depth that is obscenely hard. Heads are all polished,ported etc etc Here are pics of the engine at the rebuilders workshop. Interestingly the best con rods came from a US company and are same rods as they supply for a 6G74 engine...worth noting. enjoy! Here are a few happy snaps in random order for your enjoyment. The entire engine will be fully balanced, the crank is away being Nitride treated at the moment. the man the other man 6g75 sump showing baffles more of the same the block, no lip which is great another view of the block heads another heads pic old pistons etc, still perfectly serviceable. oil pump mechanism old and new piston comparison another old and new comparison The bolts are stamped ARP kit of bits another kit view, rings etc...rings are cast by the way, as per the stock rings note the new rod's busihing, the pin is tapered inside to reduce weight. Pauter logo note the massive improvement in material mass Last edited by z80; February 25th, 2011 at 06:16 AM.

February 25th, 2011, 09:02 AM	#4 (permalink)
NitroGlisson Soon to be SC'd :) Name: Don Glisson Join Date: Sep 2009 Location: Raleigh, NC Vehicle: 2008 Eclipse GT Posts: 25,379 Rep Power: 30	Sweet! Thanks for sharing that with us. I'd be interested in seeing more of that SC application. Please update as you progress. __________________ Mods: Nitro's Little Girl With Attitude Last edited by NitroGlisson; February 25th, 2011 at 09:04 AM.

February 25th, 2011, 09:20 AM	#6 (permalink)
Isamu The Fallen Tournaments Won: 3 Name: Isamu Join Date: Apr 2007 Location: Guam Vehicle: 300zx(TT) nismo 370z(T) Posts: 14,318 Rep Power: 21	would that S/C fit in the eclipse? __________________ Like our Facebook page:UAM 2009 Z34 SC STAGE 2 2010 Z34 NISMO Single Turbo 2013 FRS

February 25th, 2011, 09:46 AM	#7 (permalink)
sample07 Diamond Dog Name: Ryan Join Date: Apr 2007 Location: Indianapolis Vehicle: 2007/GT/MT Posts: 771 Rep Power: 6	Sweet work. I'd be interesting in seeing the list of parts you swapped out for the motor build. __________________ 2007 Eclipse GT/MT ~ RRE Headers, Progress Springs, Injen CAI, Isotta Pedals, Poly Front Motor Mount, Tanabe Axle, back, TB Bypass, Rear Windshield Washer Delete, Rear Seat Delete, DRL Delete, Glowshift Gauge Pod, 6000K HID's, Centric Slotted Rotors Lowest timed run 13.984 @ 102.17mph My Garage Indycarz.com Admin

February 25th, 2011, 10:03 AM	#8 (permalink)
joeyb Hard Core 4ger Name: Joe Join Date: Jun 2009 Location: Norman, OK Vehicle: 08 Eclipse GT - SC Posts: 9,333 Rep Power: 14	awesome man just awesome. thanks so much for the great pictures z. +rep __________________ "Has blower and many modifications." ~347 WHP / ~309 WTQ / ~6 lbs Boost

		Club4G Forum : Mitsubishi Eclipse 4G Forums - 2006-2012 Eclipse Authority > Performance and Technical > Eclipse Performance
6G75 forged engine

February 25th, 2011, 06:17 AM	#2 (permalink)
z80 Member Join Date: Dec 2010 Vehicle: 380Gt Posts: 55 Rep Power: 2	more ring views rods again where do you get it?

February 25th, 2011, 08:59 AM	#3 (permalink)
z80 Member Join Date: Dec 2010 Vehicle: 380Gt Posts: 55 Rep Power: 2	Here is the engine bay that the motor will be going into. (The forged 6G75 is a spare engine) Note the Sprintex supercharger at the rear next to firewall... Will be going from 7 psi to 12 psi

February 25th, 2011, 05:29 PM	#11 (permalink)
tjh Senior Member Join Date: Sep 2007 Location: Santa Fe NM Vehicle: 2006 Eclipse GT Posts: 790 Rep Power: 5	I thought RRE tested that sc and it did not fit due to the firewall in the eclipse __________________ http://i190.photobucket.com/albums/z...h_8eaef76f.jpg Current mods: F5 CAI, tint, Ruffracing R281 19x8.5 RRE [update coming]

February 25th, 2011, 06:37 PM	#15 (permalink)
z80 Member Join Date: Dec 2010 Vehicle: 380Gt Posts: 55 Rep Power: 2	Anyway...a forged 6G75 can be done, has been done. And it's not rocket science either. So get on with it guys, turbo charge it if that's easier. If your engine builder has any questions call this man, very helpful and did the job.. Rob Rennie Engineworx Pty Ltd phone 61-3-52672150 Australia. cya

February 25th, 2011, 07:03 PM	#17 (permalink)
DarkSidEclipse Did u see GT on the back? Join Date: May 2008 Location: Somewhere in between KY and TN Vehicle: 2006 Eclipse GS W26 Posts: 8,552 Rep Power: 67	Thanks for the info I did not know they only made 20 of the ralliart version. There are a couple guys who working on building forged 75's right now. There is also a guy with a Vortec SC that bored it out to 4.0 Question since you are from AUS the statement you made about RPW? Is there something you can shed some light on, or something we should know? __________________ "No, no, no, light speed is too slow. We're gonna have to go right to MIVEC speed."

February 25th, 2011, 08:07 PM	#18 (permalink)
joeyb Hard Core 4ger Name: Joe Join Date: Jun 2009 Location: Norman, OK Vehicle: 08 Eclipse GT - SC Posts: 9,333 Rep Power: 14	so that roots blower is stock right? how has it treated you? __________________ "Has blower and many modifications." ~347 WHP / ~309 WTQ / ~6 lbs Boost

February 25th, 2011, 08:15 PM	#19 (permalink)
TwilsonD7 Senior Member Name: Thomas Join Date: Sep 2007 Location: Fort Lauderdale Fl Vehicle: 2008/Eclipse/GT Posts: 4,176 Rep Power: 10	Didn't RRE test the alpIne supercharger, not this one. And we know forged is possible. There's one already out there and another 8 coming this summer. You can push way more then 12 psi.

February 25th, 2011, 08:17 PM	#20 (permalink)
TwilsonD7 Senior Member Name: Thomas Join Date: Sep 2007 Location: Fort Lauderdale Fl Vehicle: 2008/Eclipse/GT Posts: 4,176 Rep Power: 10	Big problem the eclipse guys are having was heat issues. And you running stock header??

February 25th, 2011, 10:48 PM	#21 (permalink)
joeyb Hard Core 4ger Name: Joe Join Date: Jun 2009 Location: Norman, OK Vehicle: 08 Eclipse GT - SC Posts: 9,333 Rep Power: 14	holy crap man good call, tom - no long tubes, z? also - how does that roots-type sound? one of the reasons I love the Vortech centrifugal type is b/c it sounds like mad max and the knight rider. __________________ "Has blower and many modifications." ~347 WHP / ~309 WTQ / ~6 lbs Boost

February 26th, 2011, 03:11 AM	#26 (permalink)
z80 Member Join Date: Dec 2010 Vehicle: 380Gt Posts: 55 Rep Power: 2	Did I mention i have a custom LSD in my auto? It's a must with that much power. The Quaife QDH7B is the best for our drivetrains. But it needs machining of the crown wheel, the splines on the driveshafts need resetting and case hardening. No wheel spin or torque steer though... Just noticed it's 4 am in the US and 8pm saturday night here in Aus....LOL

February 26th, 2011, 04:09 AM	#27 (permalink)
ALBOE Senior Member Name: Alex Join Date: Nov 2008 Location: Houston, TX Vehicle: 2012 Camaro Posts: 5,547 Rep Power: 11	haha! I need to purchase an LSD

February 26th, 2011, 09:06 PM	#28 (permalink)
MitEclipse07 Senior Member Name: Travis Join Date: Oct 2009 Location: Oceanside, CA Vehicle: 07 Eclipse GT Posts: 477 Rep Power: 3	^ Ya i second Alboe's post. I need one to. Question for ya Z, how much did you pay for the LSD? U.S. Dollar please lol. Get a good deal from anyone in particular for the LSD?

February 26th, 2011, 09:24 PM	#29 (permalink)
dejectedangle OWNER OF C4G Name: Rick Join Date: Mar 2009 Location: Connecticut/ NY Vehicle: 2008 GT-SC Posts: 2,901 Rep Power: 6	Just wondering y you did not do a overbore? Also what kind of rings did u use like stainless steel chrome plated or what??? Nice build if your going to do over 10 psi I have heard you need stronger valve springs idk if ur doin head work or not... Please get your car up and runnin and do 15 psi man I want to see it alive __________________ THE FIRST EVER 4G RUNNING STG 3 SUPERCHARGER TEAM BIG SUPERCHARGEERS

February 26th, 2011, 09:27 PM	#30 (permalink)
dejectedangle OWNER OF C4G Name: Rick Join Date: Mar 2009 Location: Connecticut/ NY Vehicle: 2008 GT-SC Posts: 2,901 Rep Power: 6	Oo sorry what compression are the pistons __________________ THE FIRST EVER 4G RUNNING STG 3 SUPERCHARGER TEAM BIG SUPERCHARGEERS

February 26th, 2011, 11:15 PM	#31 (permalink)
roy_robinsonV fastest 4g in colorado Name: roy Join Date: Jul 2009 Location: denver Vehicle: 08 gt Posts: 1,990 Rep Power: 5	Man them stock rods make me nervous

March 1st, 2011, 04:59 AM	#36 (permalink)
z80 Member Join Date: Dec 2010 Vehicle: 380Gt Posts: 55 Rep Power: 2	The key was turned at 5:30 this evening and the engine roared into life...first time. Just sounds like a new engine, no rattles or whistles...just a smooth whine. Unfortunately the smaller supercharger pulley was machined all wrong and doesn't fit. So will just be running around on 7.5 psi still. Probably won't hurt to run it on a proven relieable boost for a week or so...

March 1st, 2011, 06:04 AM	#37 (permalink)
ALBOE Senior Member Name: Alex Join Date: Nov 2008 Location: Houston, TX Vehicle: 2012 Camaro Posts: 5,547 Rep Power: 11	great news! Can't wait to see the end result (:

March 1st, 2011, 06:33 AM	#38 (permalink)
Isamu The Fallen Tournaments Won: 3 Name: Isamu Join Date: Apr 2007 Location: Guam Vehicle: 300zx(TT) nismo 370z(T) Posts: 14,318 Rep Power: 21	oh! does that mean we get a sound clip, or vid soon? __________________ Like our Facebook page:UAM 2009 Z34 SC STAGE 2 2010 Z34 NISMO Single Turbo 2013 FRS

March 9th, 2011, 10:06 AM	#40 (permalink)
MitEclipse07 Senior Member Name: Travis Join Date: Oct 2009 Location: Oceanside, CA Vehicle: 07 Eclipse GT Posts: 477 Rep Power: 3	any new updates with this Z?

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