Re-Do Banshee rebuilt this Banshee engine to 369 cc and posted it on our website for sale. With proper care and gas to oil mixture, this should be a strong running engine for years to come.
Our videos follow the engine build as it progresses. One video in the playlist shows why it's important to do a leak down test and what to do when it fails. Other videos show the engine passing its leak down test and heat cycling the engine on the test stand.
Watch the Build
Want to watch how this project came together?
- 👀 Watch the video below.
- ⬇️Scroll down for the link to watch the project's whole playlist on Youtube.
- ⬇️Keep scrolling to see the Project Specs below the video.
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Q- QUESTIONS About Your Project? Whether you're restoring a vintage ATV, upgrading your suspension, or planning an engine build, we're happy to help. We specialize in Yamaha Banshees. If you have a different project in mind, contact us and we will let you know if we can take it on and what you can expect. We are flexible and will work with you. We offer a range of services. We can:
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Project Specs
- BUILD NAME: Shop 369 Engine Rebuild - Was for Sale
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EXPECTED RIDING CONDITIONS: TBD by Customer
- Recreational dirt trail riding
- Recreational dune & trail riding
- High performance dune riding
- DISPLACEMENT: (refer to our Banshee Engine Displacement blog article to calculate, then delete this note)
- ENGINE CASES (CASE HALVES): Stock Cases
- CYLINDERS: Stock - Bored to 66 mm
- PORTED: Aggressive Dune Port - Between dune & drag port.
- PISTONS: Wiseco 66 mm - 513 Pro-Lite
- CYLINDER HEAD: Stock
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DOMES: n/a - Stock cylinder head
- CRANKSHAFT: Stock Crank 54 mm, trued and welded
- COMPRESSION: 190 psi (determines fuel recommendation)
- TRANSMISSION: Stock
- REEDS / CAGE: Stock - or - Moto Tassinari VForce4 Reed Valve System
- CARBS: Stock Mikuni with "MIC"
- CARB JETTING: 320 main, 27.5 pilot. (varies based upon engine build and elevation)
- NEEDLES: 5N7U needles for Stock Mikuni.
- NEEDLE CLIP SETTING: Center Groove on Slide Needle
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AIR SCREW ADJUSTMENT: 3/4-1 turn out for stock
- FUEL RECOMMENDATION: Race Gas (110 Octane minimum to 116 Octane) for 150-200 psi
- WATER PUMP IMPELLER: Stock - or - Billet Aluminum
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CLUTCH: Stock Clutch
- CLUTCH BASKET: Stock
- CLUTCH SPRINGS: 3 Stock & 3 Heavy Duty Springs
- CLUTCH LEVER: TBD by Customer
- EXHAUST: TBD by Customer
- STATOR: Stock
- TIMING: Stock (n/a)