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Greetings All.

Ok guys, I thought I would hold a discusssion on some MIVEC issues.
Now, Personally, I do not see why you would not be able to swap a 3.0L SOHC head and cams with a 3.0L MIVEC DOHC head and run the MIVEC off a g-reddy emanage...whats the matter with that?? I mean the g-reddy would intercept the signals on the way to the ECU and adust them accordingly...Also, the g-reddy has a function to adjust the MIVEC rpm activation...I also do not see why not a DOHC head & rocker gear wouldent be able to run on a SOHC donk...G-reddy would fix this up...right??

Hmmm, food for thought peoples...I had the technical diagrams somewhere on my computer of the 6g72, both SOHC and DOHC...Ill see if i can find it...

Cheers,
--Tonba
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Greetings All.

GOOD NEWS!! I have the diagrams for the SOHC and the DOHC 6g72, both turbo and non-turbo models. I have specifacations, diagrams on how to actually assemble the donk and all!! :D
My god...at 123 pages, its going to be a damn long read...:doubt:

Ill keep you guys informed...Any other ideas/thoughts/comments would be good!

Cheers,
--Tonba
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post post post!

Hey Tonba, do you always write "Greetings all" everytime you write a message? Or do u have some sort of template stowed away on the puter that you copy and paste?? hehe....

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Greetings All.


post post post!

Hey Tonba, do you always write "Greetings all" everytime you write a message? Or do u have some sort of template stowed away on the puter that you copy and paste?? hehe....
No, for some reason I just do it automatically...been doing it for years now :nuts: no templates or anything...

Im looking into it...Ill TRY and post the relevent pages...

Cheers,
--Tonba
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Greetings All.

Is it possible to extract pages from PDF files?? If so...HOW? Cause I wanna post them up. :D

Cheers,
--Tonba
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Does it cover the MIVEC dohc 24v 6G72? Because I had the pdf that covers the SOHC 12v 6G72, DOHC 24v 6G72 and the TT version. Just wanting to make sure you are looking at the right one mate! The document you mention sounds like mine, it doesnt cover the DOHC 24v 6G72 MIVEC.

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Greetings All.


Does it cover the MIVEC dohc 24v 6G72? Because I had the pdf that covers the SOHC 12v 6G72, DOHC 24v 6G72 and the TT version. Just wanting to make sure you are looking at the right one mate! The document you mention sounds like mine, it doesnt cover the DOHC 24v 6G72 MIVEC.
Sounds like it mate! I know Im not looking at the MIVEC one...but still...If we can get a DOHC head on the 24v SOHC...We're laughing!! I just thought it would be an interesting and productive discussion...

Cheers,
--Tonba
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Greetings All.

Ok...What I want to know, is, what is stopping us from getting a DOHC head & running gear, strapping on a G-reddy E-manage and driving off?? Or re-do the ECU wit ha non-turbo GTO ECU plus g-reddy e-manage??

Cheers,
--Tonba
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Greetings All.


Sounds like it mate! I know Im not looking at the MIVEC one...but still...If we can get a DOHC head on the 24v SOHC...We're laughing!! I just thought it would be an interesting and productive discussion...

Cheers,
--Tonba
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Wont go on a SOHC 24v as they're the wrong way around. You'd need to find mivec heads.

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Greetings All.


Wont go on a SOHC 24v as they're the wrong way around. You'd need to find mivec heads.Hmmmm...I always thought the WHOLE engine was mounted the other way...Oh well...

Ok guys, Im off to bed...:coffee: Been one long ass day for me...

Cheers,
--Tonba
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Greetings All.

Hmmmm...I always thought the WHOLE engine was mounted the other way...Oh well...

Ok guys, Im off to bed...:coffee: Been one long ass day for me...

Cheers,
--Tonba
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Yeah the whole engine is the other way around. The blocks are different too, and the bolt pattern is too

im more interested in knowing how to get some mivec heads onto my 3.5ltr V6.. so far i havent found any relevant information on this.. I wanna 200kw+ n/a motor and i think a 3.5ltr mivec as a damn good way to do it... anyone have any ideas??

emanage wont run mivec,
u need a complete replacment ecu, and one that can handle it aswell,
haltech or autronic can do it

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Greetings All.


Yeah the whole engine is the other way around. The blocks are different too, and the bolt pattern is too
Whats so different about the blocks?? Also, is the belt on the left hand side of the bay???
I still dont see why they would change the design sooo dramatically...

Wanna shead some light on this...? :D

Cheers,
--Tonba
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Whats so different about the blocks?? Also, is the belt on the left hand side of the bay???
I still dont see why they would change the design sooo dramatically...
Well, they did. I don't fit gaskets for a start. They're the same family of block, not the same block.

The belts are on the right hand side of the bay for the DOHC 24v 6G72.

Find a MIVEC, you're just asking for problems...

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Greetings All.

Would It be possible to run the MIVEC DOHC heads without using the MIVEC function??

Cheers,
--Tonba
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Greetings All.

Would It be possible to run the MIVEC DOHC heads without using the MIVEC function??

Cheers,
--Tonba
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probably be their would be no point to it, a normal DOHC head would run just as well, mivec is only good because of the variable valve timing, take that away and its isactly the same as a DOHC head

Would It be possible to run the MIVEC DOHC heads without using the MIVEC function??

probably be their would be no point to it, a normal DOHC head would run just as well, mivec is only good because of the variable valve timing, take that away and its isactly the same as a DOHC head
Well, I'd suspect it's better than SOHC as there could be better timing with the valves but it's hard to say. I wouldn't do it just for that either so probably pointless for the effort involved.

Thing to remember is that if were to magically use Mivec heads without using the Mivec component then you'll suffer from either a) peak power at 5500rpm which is probably a good 20-30kW less than what the engines actually good for or b) crappy amount of torque up until 5500rpm.

If you were to disable the mivec controller, you would be stuck with the fisrt cam profile. The second cam profile will never switch and the engine will produce peak power at whatever the 1st cam is set for, you will most likelly not be able to rev to the redline as it would be way out of the 1st cams efficiency range.

emanage wont run mivec,
u need a complete replacment ecu, and one that can handle it aswell,
haltech or autronic can do it

the e-manage does have the function to switch profiles so i would stick with it, every other input of the ecu should stays the same, u will lose many functions such as even controlling the auto trans if u go full replacement.

also it really wont matter that the blocks are the wrong way round, it just means on your car they will be facing the other way that they are on the car they came out of.

tonba would you mind emailing me the document, im very intrested.
cheers

http://home.swiftdsl.com.au/~baker/monster/files/6g72.pdf

That'll be the document he has. It doesn't cover the MIVEC though, nor the SOHC 24v 6G72 or 6G74.

I still think you should find MIVEC heads, at least you know they'll fit.

I still think you should find MIVEC heads, at least you know they'll fit.

Are you saying MIVEC heads will bolt straight up to a 6G72?
I thought it was decided a long time ago the bolt pattern was different so that woudln't work.

-Dan

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Greetings All.

No, no...the MIVEC heads will bolt up...its the DOHC heads from the 3000GT that we are unsure about...


Cheers,
--Tonba
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No, no...the MIVEC heads will bolt up...its the DOHC heads from the 3000GT that we are unsure about...
Well, fat chance they would bolt up to a 6G72-S4. 6G72 might though.

Well, from what I understand, our 2nd gens have an ECU and TCU whereas out 3rd gens have once ECU which controls the transmission too. It looks as though the 30M has both ECU's and TCU's.

Are you saying MIVEC heads will bolt straight up to a 6G72?
I thought it was decided a long time ago the bolt pattern was different so that woudln't work.

-Dan
Redav discovered the dohc mivec and the 24v sohc 6G72’s have the same head gasket so would have to bolt on. The next question will be setting up the timing belt, making sure the tensioners can be mounted. Also where the distributor goes, but those are probly small hurdles. Planning to look into all this next year. Got too many cars now, need to get rid some or build big garage first.

the e-manage does have the function to switch profiles so i would stick with it, every other input of the ecu should stays the same, u will lose many functions such as even controlling the auto trans if u go full replacement.

also it really wont matter that the blocks are the wrong way round, it just means on your car they will be facing the other way that they are on the car they came out of.

tonba would you mind emailing me the document, im very intrested.
cheers

maybe this is true, but wen i was lookin into it i was goin to bolt the mivec engine up to my manual gear box but this needed a complete new ecu to be done... so no idea