check into the hyabusa V8. they took 2 4 cyl's and made a V8.

anything i possible with enough money, my guess though is when he is done he could have just bought a V12 lambo instead of having a kit car with some 1 off engine.

as for ecm, just do like most oe V12's and use 2. run 2 seperate mafs, etc. basically electronically you have 2 seperate V6's. its wild to drive a V12 with only 6 cylinders firing, bmw will shut down an entire bank if the secondary dme has failsafe faults.

 

Interesting thanks for the info..

 

Lots of neigh-sayers in this thread.

It can be done.. but it wont be cheap.

the VQ35 is an aluminum block. Alum. is difficult to weld (not as east as Iron)

Any standalone worth its salt can operate 12 cyl.

You can not just weld a crank together. You will need to mock the 2 cranks, and have a new crank made.

You'll also have to consider block cooling, etc etc etc..

If you have the money (and LOTS of it in this case) anything is possible. It would be cheaper to find a v12.

 

I remember that article. It was in SportsCompactCar shootout a few years back

 

I can only imagine how much a custom crank would cost...

again thx all opinions and or suggestions are greatly welcomed...

 

Well i know the top secret v12 supra is a Toyota Century motor? Whatever that is, but interestingly they are using 2 Fcon pros since they only go up to 8 cylinders they use one for each bank, as they explain on their video.

 

The cost wouldn't be much less than building a V12 from scratch.

TK

 

You would be better off starting with an inline 6 since you could use two of the heads. Pretty much the same idea as the hayabusa V8. http://www.h1v8.com

If you look at what he had to do just to make it work right, you can start to see what would be involved in this. I would rather the lightweight V8 than the incredibly long V12 anyway.

 

Just get a V12 out of a mid to late 90s BMW 750iL, cheaper, and will actually work.

 

Tell your friend to get the v12 from a Jag XJS.

http://en.wikipedia.org/wiki/Jaguar_V12_engine

Probably cheaper than the alternatives.

 

Thx for the replies again. He just bought a lift for his garage so this car is gonna under some sort of surgery sooner than later. Hopefully i'll try to follow up with some pix.

 

copy and paste the engines together.

 

just tell your friend to look into the Peugeot 907 technology.

http://en.wikipedia.org/wiki/Peugeot_907

2 3.0 v6 engines working together. so its entirely possible.

 

Or an older V-12 from a BMW like with the Ultima kit car...What the Op's friend wants is a pretty good head ache, unless you have good machining skills/welding/CnC expertise...just my 2 cents

EDIT: George beat me too it!

 

it is actually a really interesting concept and it has been done before, one engine in the front and one in the back, in a delorean, i believe. however setting up the tb's to work in a seamlessly joint manner, as well as the whole differential setup issue is what makes this an impossible setup. you would have to control the output of both engines, which also means controlling the intake charge temps and afr ratios, and they would have to be exactly the same otherwise you would get erratic behavior. let me see if i can source it.

ok yea apparently this guy was successful, though its a questionable design lol.

link...
http://www.gendreaumicro.com/tenpointtwo/11472index.htm

it has two different modes, an independent fwd mode, powered by a 2.0 prelude engine, and a 4wd mode, where the rear engine is a 500 cubic inch caddie motor. the transmissions are setup to shift seamlessly and the rear auxiliary engine is controlled from within the cabin. the engines run independently with different differentials. considering the rear engine creates a lot more torque then the front, i am assuming it is impossible to achieve any sort of practicality with it, much less any sort of performance.

 

http://www.youtube.com/watch?v=W0kN_4YdhsI

 

isnt combining 2 6 cyls called a w12 instead of a v12? like in the bently continental gt its a twin turbo w12 so its pretty much 2 single turboed 6 cyls put together and in the veyron its a w16 so its 2 twin turbo v8s put together am i right?

 

not a w unless you combine them in a w shape. im thinking he was suggesting a back to back configuration AKA v12

 

By the time he is done, the price tag will be close enough that he could have just bought a REAL Lambo.