Channel: KartFab

Category: Autos & Vehicles

Tags: honda gx390 performance modsforged pistonstage 4 modsbillet connecting rodpiston ring orientationbillet crankshaftsmall engine performance partsmini bike stroker enginemini bike enginehow to use cut to length pusrodsstroker engine buildhonda gx390 modschromoly push rodshow to lap valvessmall engine performance modsblack venom roller rockersengine buildhow to cc a cylinder headhow to use plastigagepredator 420cc modsgo kart engine

Description: Ever wondered what putting 5x more horsepower onto a mini bike would do? Check out the Honda gx390 performance mods build video that goes over the big block engine swap from the forged piston, billet rod and crank on the bottom end, to the black venom ratio rockers, heavy valve springs, 3 stage header, and flat-slide mikuni carburetor on the top end. Plus a little bit of riding at the end. *PARTS USED IN THIS BUILD* Honda GX390 Engine amzn.to/2zQIOrW GX390 Starter amzn.to/2uxHdCl Predaotr 420/Gx340/390 Billet Connecting Rod bit.ly/2mqzp0I Honda Gx390 1.2 Ratio Roller Rockers bit.ly/2LpKfPr 90mm -.050" compresison height piston bit.ly/2uIlp6o GX390 +.200" (70mm) stroker crank bit.ly/2uLyGuT GX390 Crank Bearings amzn.to/2JyefHh GX390 Oil Seal amzn.to/2NlSxs0 GX390 Magnetic Oil Plug bit.ly/2NrT4ZL 90mm .043" head gasket bit.ly/2NYiyic 35mm Intake Valve bit.ly/2L7ij6G 31mm Exhaust Valve bit.ly/2zZx0Uz Billet Retainer Kit For Valves bit.ly/2mulnel GX240-390 & 301-420 50 lb HD Valve Springs bit.ly/2msY98K Rotating Assembly Balanced by NR Racing GX390 Valve Lifters amzn.to/2L6lifW GX390/420 275 Camshaft bit.ly/2No1LEs GX390 Crankcase Cover amzn.to/2Jzynso GX390 Gasket(s) amzn.to/2uxT1Ez GX390 Valve Cover Spacer bit.ly/2uLAFPR Cut To Length Push Rods bit.ly/2mthxT2 Mikuni TM32 Flatslide Carburetor amzn.to/2Ltf9q5 Billet 32mm Intake Manifold bit.ly/2LtYjHG GX390/Predator 420 Exhaust Header bit.ly/2uHhdDV 40 series Torque Converter Kit bit.ly/2Nsg7U2 Billet Thumb Throttle amzn.to/2zQHh5a Adjustable Throttle Cable bit.ly/2JzAL2k *TOOLS & CONSUMABLES USED IN THIS BUILD* Piston Stop amzn.to/2NZNxKN Degree Wheel amzn.to/2zPQXwD Timing Light amzn.to/2uxhMAX Gasket Maker amzn.to/2uxU8Ef Bearing Puller amzn.to/2mrjGOP Plastigage amzn.to/2moGJKm 12 Point Socket Set amzn.to/2L2yiTH torque wrench amzn.to/2L82pJu Feeler Gauge amzn.to/2NYzBkl Assembly Lube amzn.to/2NWIMlc Dremel Rotary Tool amzn.to/2muFnxE Carbide Rotary Burrs amzn.to/2O1Tp6n Dial Indicator amzn.to/2zLZNLS Green Grease amzn.to/2uwq3F4 Valve Lapping Compound amzn.to/2O13DnM Valve Lapping Tool valve_lapping_tool Isopropyl Alcohol amzn.to/2mpX9lz 50ml Class A Burette amzn.to/2L3Ojsp Micrometer amzn.to/2uxvKTo Mill amzn.to/2L9rHHi Piston Pliers amzn.to/2zRgc1R Piston Ring Compressor amzn.to/2uv9NEk Dry Erase Marker amzn.to/2uxY4ov Caliper amzn.to/2NZlQlt Abrasive Chop Saw amzn.to/2uxsB5Y *Compression Ratio Calculator* bit.ly/2zSEOas *Free Go Kart Plans* kartfab.com/go-kart-plans GET MORE KARTFAB youtube.com/c/kartfab Instagram: instagram.com/kartfab Like KartFab: Facebook.com/KartFab Follow KartFab: Twitter.com/KartFab KartFab Google+: plus.google.com/+KartFab Rock Intro 3 by Audionautix is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0/) Artist: audionautix.com