Jeff picked up a Banshee to enjoy at the Oregon coast — but on his very first ride, the crankshaft failed. Since he knew he wanted a solid and exciting engine setup anyway, he reached out to Re-Do Banshee to explore his options. After talking with Virgil, Jeff decided on a 421 Cub build.
The engine turned out great, and Jeff couldn’t be happier with the results. 👍🙂
For more info on Jeff's build:
- Watch the video. 👀
- Scroll down ⬇️ for the link to watch the build's whole playlist on Youtube.
- Keep scrolling down ⬇️ to see the build specs below the video.
| Q- Have questions about selecting parts or getting help with your build? A- You can call 📞📱 or message us at 541-419-6054. |
We are flexible and will work with you. We can:
- Help you select the parts for your DIY build and ship them to you. - OR -
- Build your engine and ship it to you to install. - OR -
- Complete the whole build for you and install in your Banshee.
Jeff's Engine Specs
- BUILD NAME: Jeff's 421 cc (Cheetah) Cub Build
- DISPLACEMENT: 421 cc
- CYLINDERS: 68 mm Cheetah Cub Cylinders - from Cast Precision Industries, or CPI.
- PORTED: As Cast. This means they are untouched from the casting at CPI.
- PISTONS: Wiseco 68mm
- CYLINDER HEAD: Redline Racing Cool Head
- DOMES: 19 cc
- CRANKSHAFT: HotRods 58 mm stroke. This is +4 mil over the stock stroke of 54 mm. Crankshaft was trued and welded.
- COMPRESSION: 185 / 187 psi
- REEDS / CAGE: Mototassinari V-Force 4 Reeds and Cage
- CARBS: Keihin 35 mm PWK
- CARB JETTING: Started with 170 main jets and 50 pilot jets at our shop. Jeff's Banshee ended up needing larger mains after the plug chop. This 421 is jetted to run at the Oregon Coast.
- NEEDLES: CEL
- AIR SCREW ADJUSTMENT: 2 turns out
- FUEL RECOMMENDATION: Race Gas (110-116 Octane)
- WATER PUMP IMPELLER: Billet Aluminum
- CLUTCH: Modquad Lockout Clutch with Cover
- EXHAUST: Shearer Big Bore In-Frame pipes with Shearer silencers.
- TIMING: Set to 4 degrees advanced