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    • A proper M3 engine swap - Brintech Customs sticks an S85 V10 into an E46 M3

      Get out of here with your dime a dozen LSX into BMW swaps. Yeah, yeah, an LS V8 is cheap, easy to find, and can make a bunch of power affordably. So what? If cheap and easy is your thing do not buy a BMW M3 in the first place.


      You want to swap a different motor into your BMW? This is the one you swap in. The S85 V10 out of the E60 M5 is arguably the best BMW M street motor of all time.

      This is an engine offering performance similar to the modern Ford Shelby GT350 Voodoo V8 and BMW had it on streets way back in 2005.

      BMW had the balls to give the M5 a high revving V10 but not a big enough pair to stick that motor under the hood of a 3-Series or Z4. AMG would have done it, you can believe that.

      The E92 M3 should feature the S85 V10. It would have been a German GT350 except in a lighter chassis, with a dual clutch transmission, and a decade ahead of the curve.

      We can't all get what we want though. Actually, scratch that, Brintech Customs can give you exactly what you want. They decided to swap the S85 V10 into the E46 generation M3 and the engine looks right at home.

      This is an M3 engine swap done right. Anything else is simply not the way BMW M would do it themselves. That may be fine for ghetto garage builds but not for BimmerBoost.com.






      A quick walk around below showing the initial engine installation preparations. Clearances and fitment here are tight, but achieved while retaining a stock M3 steering rack location.












      This article was originally published in forum thread: A proper M3 engine swap - Brintech Customs sticks an S85 V10 into an E46 M3 started by Sticky View original post
      Comments 6 Comments
      1. maxnix's Avatar
        maxnix -
        DCT on a S85? That is interesting in itself!
      1. leveraged sellout's Avatar
        leveraged sellout -
        Only problem might be the weight, these are insanely heavy engines, even heavier than the boat anchor S54. If I remember correctly, the M156 weighs less than even the S65...not sure how BMW managed to make a 5 liter engine so heavy...although I suppose it pays off.

        Even more incredible is how they still managed 50/50 weight distribution in the E60 M5...much of that is due to the all-aluminum front end, which most people don't realize they have. Sure makes getting a magnetic work light to stick a real pain....
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
        the M156 weighs less than even the S65.
        How is that possible when the S65 weighs less than the S54?
      1. 93siro's Avatar
        93siro -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        How is that possible when the S65 weighs less than the S54?
        We found out the S65 weighs 15kg more than the S54 on our scale. I know BMW said otherwise, but they might be saying longblock vs longblock or something else. Dressed up with all the accessories, S65 is heavier. Same goes for the transmission, around 10KG there as well.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 93siro Click here to enlarge
        We found out the S65 weighs 15kg more than the S54 on our scale. I know BMW said otherwise, but they might be saying longblock vs longblock or something else. Dressed up with all the accessories, S65 is heavier. Same goes for the transmission, around 10KG there as well.
        Ok wth accessories but the block itself you found to be lighter, right?
      1. 93siro's Avatar
        93siro -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Ok wth accessories but the block itself you found to be lighter, right?
        It has to be, otherwise I don’t know how BMW states S65 is lighter. We only weighed the engines with water pump, alternator headers etc... we didn’t bother to strip them to see whats what; and the S65 came out to be heavier. The problem with the S65 is sheer size and weight of the heads. Really big and really heavy stuff.