Looks like it will rev quite a bit harder than the limit we have imposed by our ECU

http://www.youtube.com/watch?v=Xrgu146_G20&NR=1

could be the 3.8L MIVEC...?

Looks like it will rev quite a bit harder than the limit we have imposed by our ECU

http://www.youtube.com/watch?v=Xrgu146_G20&NR=1

That's the Mivec motor with increased redline by reflashing ecu which the 9G boys can now do.

It might rev to 7,000RPM but will it do it reliably? The engine's cam profiles and fuel/ignition timing maps are designed to work within the stock rev range, I doubt a decent gain will be achieved without aftermarket cams and a remap. Video fails to show the power curve too which is disappointing.

cams are very mild. 380 engines are run in the IP Magna's and make 220kw at the wheels, so their owners are the people to speak to. Piston will not survive well at high rpm with any sort of poor tuning.

What's an IP magna?

Improved Production... ......my engine is the same except they run bigger cams (now), tb's & of course more aggresive tune.
Redline for mine is 7000rpm.....it pulls hard all the way to its new limit.

The EMS is from the 6G74 3.5l engine as is the lower injection manifold and the TB as you note. Ports are largely untouched apart from matching the manifolds to each other and CR is std. Even with the bigger cams that they now run there is little point running them this hard. The 6G75 will always make much more power than the 6G74 simply due to valve sizes. I have a detailed article in the next issue of Race Magazine if anyone is interested.

The EMS is from the 6G74 3.5l engine as is the lower injection manifold and the TB as you note. Ports are largely untouched apart from matching the manifolds to each other and CR is std. Even with the bigger cams that they now run there is little point running them this hard. The 6G75 will always make much more power than the 6G74 simply due to valve sizes. I have a detailed article in the next issue of Race Magazine if anyone is interested.


yeah...always interested in a good read mate.

Questions for Nero.

I have a few mild intake & exhaust mods on my manual 380 (extractors, high flow 3rd cat, straight through mufflers, 90mm Galant intake snorkel, lower resonator tube end cut off and connected to the fog light hole in the front bar) and a Chiptorque Xede piggy back fitted by Steve Knight and tuned to run on 98RON.
With these mods it revs out a bit higher & cleaner than stock, but the rev limiter still cuts in around 6,400. It feels like it has more to give and it's a pain that 2nd gear is all over at 80km/h. I know that second gear running out so soon is mainly down to the gearing, but my questions are:

1. Could Steve Knight, by tweaking the Xede, bump up the rev limiter a bit?
2. If he could, what would be the best compromise increased rev limit. 6,800? 7,000?
3. Is there any point in doing this, would I gain much, or would I be wasting my time and/or putting too much stress on the stock internals?

KJ.

1. Could Steve Knight, by tweaking the Xede, bump up the rev limiter a bit?

No. The rev limiter is a function of the Bosch ECU, not the Exede. The Exede provides a modified signal to the ECU; it can't change basic functions.

AFAIK Knotched is correct. However let me say that two of the guys who run the Magna's are ex-MMAL. One in particular worked in the engine labs doing the 6G75 and he also does the race engines (which are largely stock BTW) and these blokes are really the guys to ask. However his information and from other friends in OEM engine labs in Australia I would suggest that the Bosch gear is perhaps left alone - it is very complex. The upside is that engines just need more cam, not more revs. The magna's engines peak in the mid fives and do not need to rev to 7000+ unless there is a specific need for the driver to stretch to avoid a shift and their 220kW ATW is made in the low 6'000's. What a 380 really needs to make use of this is an LSD, which is a challenge as you all know. BTW std rev cut is 6300.

.... What a 380 really needs to make use of this is an LSD, which is a challenge as you all know. .


have I got a surprise for you......:happy:

Is an awd system? :io:

Is an awd system? :io:


Nope...have already fitted a quaife LSD into the auto, just waiting on the machining of the drivers' side driveshaft.

Then we have lotsa more traction...:D

you'll certainly get my attention if you find an LSD to fit the manual! The Magna box LSD's will not fit without modification. I think I will look at the Wavetrac LSD during next week.

you'll certainly get my attention if you find an LSD to fit the manual! The Magna box LSD's will not fit without modification. I think I will look at the Wavetrac LSD during next week.

Are yo0u sure? The US guys have available Quaifes to fit the 5 & 6 speed manual Eclipses so the 5 speed should fit the 380. There were also a couple of TMR custom manual LSD's floating around from the prototype but dunno what happened to them.

you'll certainly get my attention if you find an LSD to fit the manual! The Magna box LSD's will not fit without modification. I think I will look at the Wavetrac LSD during next week.



You want an LSD for a manual Magna?

Quaife QDH7B is the part number you need.

Oops...misread your post...you'll need to do some work to make it fit a manual 380, agreed.

You want an LSD for a manual Magna?

Quaife QDH7B is the part number you need.

You read his post wrong, he said the Magna LSD doesn't fit so I assume he has a manual 380??

Great minds think alike at 10:54 am fooz...:D

RPW have "suggested" for many months that they have a Quaife LSD for both auto & manual 380s, see this page http://www.rpw.com.au/shop/index.php?option=com_content&task=view&id=202&Itemid=51 under 5. Drive Line Upgrades:

"3. Manuel and Auto models are known for there weak differentials. Upgrading to a Quaife Limited Slip Differential has many benefits including increased gearbox strength, increased traction, reduction of wheel tramp, better road feel and handling. For anyone considering the following group three modifications, this is something highly recomended"

A bit ambiguous, they imply that they have Quaife LSDs ready to fit but somehow I doubt it.

Blackstar has already pretty well proven that no-one has an LSD ready to slot straight into an auto 380 without a few mods, so I guess the same thing applies to a manual 380. At least from an Oz supplier.

KJ.

I don't have a 380, I am building up a 900kg spaceframe mid engine car with the 380 drivetrain, hence my interest. There is nothing wrong with the std diff for the application it was meant for, but it is not ideal for a more sporting bent. The LSD will not affect gearbox strength; in all FWD transaxle a diff failure will lead to steel being flung through the rest of the transaxle with the usual bad consequences. Were the final drive sealed then a diff failure would only lead to loss of drive, so an LSD has no effect on driveline strength per se. Axle tramp can be fixed...but I have no idea what 'group three' modifications are. Final drive bearings are a different size, this is why the LSD will not fit the 380. I am not sure that the manual 5spd eclipse is the same transmission as the 380.

Magna racing article in this. Will be on the shelves in 4-5 days:
http://i129.photobucket.com/albums/p234/NRoshier/Coverissue23screen-1.jpg

Thats pretty sweet! Will get myself a copy for sure!