How I Built the 78cc 12hp+ Racing Bicycle Engine!

In this video, I show how I built a motorized bicycle hybrid engine, with useful and important information such as how the two stroke exhaust pipe and engine works, increasing stroke, port durations, what parts to use and more. ► Join my Discord: https://discord.gg/B39Zb3dSSW ► 5% off any products: https://smolikperformance.com/trentbikes ► Membership or Donate: https://www.youtube.com/channel/UCMmcPP5S3f9xpLMAUc0D2aQ/join https://ko-fi.com/trentbikes ► Instagram: https://instagram.com/trent.bikes builtnotboughtbikes.myshopify.com scooterswapshop.com RDManu.com treatland.tv Facebook posts: https://www.facebook.com/groups/715437322418730/posts/1600843313878122/ https://www.facebook.com/groups/715437322418730/posts/1600869270542193/ https://www.facebook.com/groups/715437322418730/posts/1601362530492867/ List of Builds: https://pastebin.com/u/trentbikes $1,677 MXS Racing Hybrid Engine build $1,572 actually spent --------- Top end parts --------- MXS Zuma Vertical Racing $280: https://scooterswapshop.com/products/msx-zuma-vertical-70cc-16hp-sport-kit?variant=40154175241 Stage6 Streetrace pipe $230: https://www.maxiscoot.com/en/product/exhaust-stage6-streetrace-cnc-red-black-derbi-minarelli-am6-81433 High Flow Intake kit $125: https://www.maxiscoot.com/en/product/intake-kit-mxs-racing-highflow-reed-valve-stage6-viton-yamaha-bw-s-slider-59239 TM24 carburetor $120: https://amzn.to/48svXc1 (I bought used $65 @Tan_Boi Industries) CNC Smolik Head (Custom, MinVert 6mm Studs, MXS intake kit) $125: https://collabs.shop/bza0fz --------- Bottom end parts --------- 66/80cc bottomend w/ 45x45mm stud spacing $100: https://amzn.to/40kCoMp 66/80cc Crankcase Gaskets $4/ea: BTG Multi-Plate Clutch $300 (used $250): https://collabs.shopify.com/product/162235317 RDManu.com Crankshafts $250 (presale): https://rdmanu.com/products/rdm-crankshaft-2023-q3-4-presale?_pos=6&_sid=62ac262eb&_ss=r Save your months worth of wait: https://builtnotboughtbikes.myshopify.com/products/rdm-cranks?_pos=2&_sid=fab9efa92&_ss=r (Contact Mitch Green on facebook, he owns this site) 10mm Spacer $35: https://builtnotboughtbikes.myshopify.com/products/minarelli-spacers?variant=44830689460447 Extra base shims/gaskets, transfer ports fully open, and good squish gap (0.7 - 1mm), OR recessed heads. 10pcs M6x120mm $12: https://amzn.to/3ZcqByN 20pcs M8 to M6 $7: https://amzn.to/4eAnbdB Timken 6003 Bearings for 17mm crankshafts $14: https://amzn.to/3NM0l7N 2pcs 15x27x5 and 15x27x7 Crankseals for 15mm crankshafts $5ea: https://www.aliexpress.us/item/3256805401802799.html --------- Ignition system parts (recommended) --------- GruBee Ignition upgrade $40: https://www.grubee.net/collections/skyhawk-2-cycle-all/products/good-boy-hp-cdi-magneto Parmakit CDI $71: https://www.treatland.tv/parmakit-cdi-box-for-sooo-many-bikes-p/parmakit-cdi-box-57001.29.htm BR9HS-10 Spark Plugs $4ea: https://amzn.to/4fOWH98 (-10 = 1mm gap, can be re-gapped) 0:00 Intro 1:05 Buying parts 5:53 Unboxing parts 8:15 Information before building 12:02 Building the engine 23:23 First starts & fixing issues 24:35 Riding tests & top runs 36:25 Bad crank & conclusion #motorizedbike #2stroke #bikelife