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My team and I have been working on this engine for a whole year: we have applied all our experience, involved the coolest specialists, used unique equipment. All this allowed us to build not only a powerful engine, but also a reliable one! In particular, the engine helped us win the endurance race on the Lider, and take 2nd place in the Supermoto.ru Minimotard Championship in the 2023 season. Watch our other videos about building racing pit bikes! Minimotard is the most accessible and popular class of road and circuit motorcycle racing. Our Telegram https://t.me/junkgaragemoscow VKontakte https://vk.com/junkmotorsport Crankshaft balancing Kirgizin Artem https://youtube.com/@kasp1971?si=uLZj... Filming and editing @semen_kirilov https://vk.com/rumkog Supermoto website http://supermoto.ru Telegram https://t.me/supermotorus 00:00 We will tell you here about [possibly] the most powerful YX160 engine in the world 01:06 This is the base: popular science - about the meaning of modifications 02:28 About the crankshaft, connecting rod and balancing 04:26 Custom "knee": how it is done 08:21 About the resource of a charged motor for a pit bike 09:40 Modification of the cylinder head 10:13 Nuances with crankcase halves 12:36 Roots Bearings: selection of Japanese analogues and installation 14:15 Fighting crankshaft runout 16:31 Subtleties, surprises and related modifications when assembling the bottom 23:49 Assembling the top: piston thermal clearance, reducing the compression ratio and a new chain 26:26 On the importance of setting the phases on this engine 27:28 Output figures. How much more powerful than stock was our engine? 31:00 What is the downside of the engine that we built? 31:30 Where else can you get the power of the YX160