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  • V12 conversion help

    does any one know how to professionaly install a BMW 850i 5.0L V12 motor into a 11' stretched IFG 6.0 diablo body? do i use the porsche 930 Trans??? can it physically fit?? what do i need to do in order to accomadate this motor conversion??

    HELP!!!!!!!!

    Any help would be great!!!
    *http://www.lambo-builder.cjb.net*

  • #2
    Re: V12 conversion help

    There's a little info at Lambo Lounge on this: http://www.lambolounge.com/Chassis/E...MW-V12/BMW.htm
    Bob custom '84 Fiero SE --->>> custom F408
    http://www.madmechanics.com/forum/cu...ilepic37_1.gif

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    • #3
      Re: V12 conversion help

      Why wouldn't it fit in the kit? (=body?) I'd worry about getting it to fit in the frame. I guess this engine is still a bit smaller then the real Diablo engine.

      I don't want to ruin your idea but:
      from the website RCR gave:

      You can find these engines on Car-Part.com from $700 up to an average unburnt one for around $3500. You can see by the number of burnt ones BMW has a problem in this area. At these prices I consider it a throw away engine. It would cost more to rebuild one than it would cost to buy one from salvage.
      So I think you'd better get yourself an M5 engine if you want a BMW engine. Last weekend me and my friend were driving around in a BMW 525i automatic, the power is amazing (and so is the sound ).

      EDIT:

      BTW: Don't get me wrong...I think the idea of a V12 in there is very good (will look real). Maybe you should look at the Jaguar and Mercedes V12's too

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      • #4
        Re: V12 conversion help

        Hey thats a good idea (Jaguar or Mercedes) ;D

        I never really thought of them before but as a possible donar engine options. Now you mentioned the frame, but how will the motor and the porsche 930 Tranny fit in there ?? that was my question, will it actually fit in the frame or will i be required to do some custom welding and cutting in order to accomodate it?
        *http://www.lambo-builder.cjb.net*

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        • #5
          Re: V12 conversion help

          If you give me a pic I MAY be able to help you, I've seen these BMW V12's at the car dump nearby...

          BTW: I don't want to ruin your thread but can you give me a little info about the Porsche tranny-thing (gearbox?)? What's the reason for using that and would it be usefull in a fiero frame?

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          • #6
            Re: V12 conversion help

            oh no, its no problem at all........

            The reason being is because like the real lambourgini's, the motors are transversaly mounted like a rear-wheel drive application, except its behind the driver and it gives it the "REALISTIC" look. Porsche engines are manufactured this way like the real lambos and ferraris so naturaly its the only option on the market if your looking for the "Real" look. Also the porsche transmission can handle 700HP+ so i won't hesitate to bolt on lots of goodies and naturaly thats the only way i think that i can fit a V12 into the frame unless (someone can give me a better suggestion) there are apparently other solutions to the porsche, i heard that the Audi 5000s tranny can do the trick but thats why im posting this tread
            *http://www.lambo-builder.cjb.net*

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            • #7
              Re: V12 conversion help

              I read about the audi 5000 tranny on another website (will look for the adress in a couple of minutes)
              But for that one you needed a conversion kit which costs over 1000 dollars. Can you use the porsche tranny with the BMW V12 without spending much money on a conversion kit?

              FOUND IT:

              http://www.lambolounge.com/

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              • #8
                Re: V12 conversion help

                I think that putting a V12 into the Diablo should take some serious consideration. It might look more realalistic when you open the hood but at what cost. If you have looked at the V8 Diablo with the Porsche/Audi tranny, they stick way out the back. So it will be difficult to make the car look authentic with the tranny hanging out the back end of the car. Infact, you have to cut out a fair bit of fiberglass to get the tranny and cradle to fit back there. This is a picture of a beautiful V8 cradle.
                So that is the price you pay for the transaxle. The closest to finished V12 I have seen is the CCD build and the tranny is placed 2" further back than with the V8. So if you are going for an authentic looking car, the transaxle is not the way to go. If you want an authentic looking engine bay then get a V12 but don't let anyone look at the back of the car.

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                • #9
                  Re: V12 conversion help

                  DaMn..........

                  Ok well thanks for your help looks like i have to re-do my whole engine conversion, thx janice
                  *http://www.lambo-builder.cjb.net*

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                  • #10
                    Re: V12 conversion help

                    In a countach...the transmission is on the other side of the engine (between the seats...). I don't know if that's possible with any engine/tranny...but I guess it should be worth checking that out.

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                    • #11
                      Re: V12 conversion help

                      In a countach...the transmission is on the other side of the engine (between the seats...). I don't know if that's possible with any engine/tranny...but I guess it should be worth checking that out.

                      Same with the porsche 911 transmission(though it's awd)

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                      • #12
                        Re: V12 conversion help

                        If you're really interested in a Jag v-12 check out jag-lovers.org. Beware they are heavy, like 750 pounds and the electronics SUCK-expect to replace that right off the bat. The other thing its you've got to clean the engines up. As more emissions and extras were added they just threw them on the engine. Open up the hood of a 85 XJS and you'll see a rat's nest of tubes, wires and hoses. Its shockingly bad

                        On the plus side they were designed to be the everyman's V12. They will put out good power, with cams and exhaust 360 flywheel horsepower is realistic. Its got a 90 mm bore and a 70 mm stroke with OHC so they'll rev. They're also cheap any scrap yard should be able to get you a running one with guarenteed compression for $1,000. The newer engines had fuel injection with intakes hung over the side,like a lambo. While it only has two throttle bodies, you can convert to four of them. Of course, weber's are an option too.

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                        • #13
                          Re: V12 conversion help[img]http://www.kitcar.ca/F


                          Hi I don't know if the setup is still available it used corvette suspension front and rear , a reverse drive on a tubro 400 with a chev v8 but the V12 Jag also used the turbo 400 so you could use a Jag engine on this setup for a countach or a Diablo.

                          Gene

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                          • #14
                            Re: V12 conversion help

                            Ok.......

                            Um im still thinking about the whole V12 conversion setup and here is preaty much all the information that i can gather:

                            1. Difficult setup with import V12 into Fiero chassis and even if i get it to fit, like janice ho's picture showed that the under carrige of the tranny was sticking out from the bottom.

                            2. Best choice to go with V12 conversion is to construct a custom tubular chassis.

                            If i had missed something can someone please give me help, also i have finally decided for my first build, im going to go with either a V8 archie kit, or a porsche 915 conversion with a corvette LT1 motor. I am construction a website www.lambo-builder.cjb.net the site is still under heavy construction, expect a launch date of around september 17th, 2002 check it out!!!!!
                            *http://www.lambo-builder.cjb.net*

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                            • #15
                              Re: V12 conversion help

                              how expensive is this porsche 915 transmission?

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