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    • How, why, and the process of building a billet engine block as illustrated by Bullet Race Engineering's Honda B-Series block

      It does not matter what the platform is at some point you will surpass the capability of the factory engine design when adding power/torque. In the Honda world this is fairly common. It's even common in the Nissan GTR world. What do you do when that happens?


      You go to a billet engine block. The factory design can only be reinforced so many ways but it is always a compromise. A ground-up billet design for the application is the proper (albeit expensive) way to do it reliably.

      Do you really think those 1500+ horsepower Hondas and 2500+ horsepower Nissan GTR's are doing it on factory blocks? Absolutely not.

      This is how you get to a custom billet block capable of huge power according to Bullet Race Engineering:

      1. Start with an OEM block. Scan it to establish baseline dimensions
      2. Improve the design to make it more rigid, more durable, more reliable
      3. Load a 130 kilogram block of 6061 aluminium billet into the 4-axis CNC mill
      4. Remove most of the material until it looks like a Honda B-series
      5. Keep removing metal
      6. Now you have a block suitable for all Honda B-series applications that is better in every way and only requires minimal modifications to replace the original block
      7. Throw the original block in the skip with the swarf - it's still worth a few dollars as scrap metal














      What you see there will hold 1700+ horsepower and will run you $7500+ dollars. That may sound like a lot but it is actually affordable. For one, you have the Honda volume so several of these will sell plus it being a four-cylinder requires less material and makes for an easier design.

      A Nissan GTR VR38DETT 4.0 liter 2500+ hp capable billet engine block can run over $25k.

      How much power do you want to reliably make and what do you want to spend? That is what it comes down to.

      This article was originally published in forum thread: How, why, and the process of building a billet engine block as illustrated by Bullet Race Engineering's Honda B-Series block started by Sticky View original post
      Comments 7 Comments
      1. inlineS54B32's Avatar
        inlineS54B32 -
        That looks like a Formula 1 quality block. Unbelievable quality here. Awesome stuff!
      1. imola_shaun's Avatar
        imola_shaun -
        Bullet have a whole array of billet blocks in the catalogue. Check this video out for a billet 4g63 block. The number are just insane.


        But I really want to see someone in Australia chuck their Nitto stroker kits into a billet RB30 block
      1. micklej's Avatar
        micklej -
        Forgive my newbie ignorance.So these cars with billet engines aren't really the car they are in. Those GTR-S and Porsches etc are not really GTR-s and Porsches ? Or have I not understood ?
      1. subaru335i's Avatar
        subaru335i -
        Billet subaru blocks are the $#@!tttt. Willall also working on full billet heads to match.

        https://www.iagperformance.com/IAG-W...g-eng-1610.htm
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by micklej Click here to enlarge
        Forgive my newbie ignorance.So these cars with billet engines aren't really the car they are in. Those GTR-S and Porsches etc are not really GTR-s and Porsches ? Or have I not understood ?
        It's still the same motor architecture just reinforced with a custom block that is much stronger than the factory piece.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by micklej Click here to enlarge
        Forgive my newbie ignorance.So these cars with billet engines aren't really the car they are in. Those GTR-S and Porsches etc are not really GTR-s and Porsches ? Or have I not understood ?
        The high HP Porsches are on their OEM Mezger cases.
      1. micklej's Avatar
        micklej -
        Cheers for that bud.