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6023 - Signature Series Brad Hill Edition Full Mod Zenoah 4 Bolt 30.5cc Game Over Engine

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This engine is our premier oval racing engine 

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6023 - Signature Series Brad Hill Edition Full Mod Zenoah 4 Bolt 30.5cc  Game Over Engine

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    After quite a few years of prototyping our oval racing engines we've come up with the Brad Hill "Game Over" signature series engine. The 30.5cc version is intended for the advanced oval racer and can be overpowered if you're new to racing. If  you're new to racing take a look at the 28.5cc Brad Hill oval engine sku 6223. This engine is designed and tuned exclusively for oval racing and is not suited for bashing. It offers a great balance of torque and rpm's and is the fastest engine currently in the DLMRA series. Check out Bodies-by-hill facebook page for custom built top of the line late model bodies. or email 


    The following modifications have been done. Just like the rest of our engines this is cnc ported and comes standard with a billet crankcase.
    1. Deck cylinder to raise compression without using a thinner cylinder gasket
    2. Reshape piston
    3. Lighten piston
    4. Relieve piston to prevent seizes 
    5. Modify intake port for better flow
    6. Adjust intake duration to our specs
    7. Resurface all ports
    8. Modify transfer ports for better flow
    9. Enlarge and reshape exhaust port
    10. Adjust exhaust duration to our specs
    11. Remove stock crank and install stuffed crank
    12. Install all new gaskets and c-clips when engine is assembled
    13. Re-bevel all porting and stock bevels to prevent damage to the piston and/or cylinder

    This engine now comes with a TR/OBR billet crankcase at no extra cost. Every long block or engine is now CNC ported and hand finished. CNC porting and hand finishing is all done in-house by the OBR staff. We do not contract out any of our porting so every engine is modified to our exact specifications. We are able to offer higher accuracy this way as well as more power. Our CNC machine has allowed us to take our porting to the next level due to us being able to do cylinder work that is not possible to do by hand.

    Additional Information

    Manufacture OBR
    Sale Price No

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