6209 - CNC Ported Full Mod Zenoah 30.5cc 4 Bolt Long Block - Billet Crankcase

This long block 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. Full Mod - Our top of the line engines. Check out this engine in action: http://www.youtube.com/watch?v=NhQ50CvSVIM  The full mod 30.5cc has proven to be one of the most popular engines we build. This is a great way to upgrade to a full mod 4 bolt engine and save some cash. To complete this long block you will need a flywheel, coil, covers, carb and clutch. All of thse items can be removed from your stock engine. Our long blocks come with a complete 4 bolt Zenoah crankcas