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Banshee Bob's 353 Stocker Rebuild - Completed Dec 2025

Banshee Bob's 353 Stocker Rebuild - Completed Dec 2025

Banshee Bob needed this stock engine freshened up and he sent it to us from Michigan. It was a pretty standard rebuild that went together smoothly. The engine sounded crispy in the engine stand and the carbs synced right up. After Virgil shared video with Bob of the engine running, we sent it back to Bob to be reinstalled in his Banshee. Bob then completed the break in process after he reinstalled the engine in the chassis.

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.

 

Q- QUESTIONS About Your Project?
A- You can call 📞📱 or message us at 541-419-6054. 

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:

  1. Help you select the parts for your DIY build and ship them to you.
  2. Help you Pack and Ship your Engine to us, then build your engine and ship it back to you to install.
  3. Complete the whole engine build for you and install in your Banshee.
  4. We can inspect, repair and service the whole Banshee for you if you'd like.
  5. We can build or restore your Banshee, if that's what you need.
  6. We may also be able to locate a local Banshee for you and install your newly built engine in it.

Project Specs

  • BUILD NAME: Banshee Bob's 353 Stocker Rebuild
  • EXPECTED RIDING CONDITIONS:  Recreational dune & trail riding
  • DISPLACEMENT:  353cc 
  • ENGINE CASES (CASE HALVES):  Stock Cases, repaired
  • CYLINDERS:  Stock - Bored to 64.5 mm
  • PORTED:  Stock Porting
  • PISTONS: Wiseco 64.5 mm - 513 Pro-Lite
  • CYLINDER HEAD: Stock
  • DOMES:  23cc - Stock cylinder head
  • CRANKSHAFT: HotRods 54 mm (stock stroke), trued and welded
  • COMPRESSION:   (determines fuel recommendation)
  • TRANSMISSION:  Stock 
  • REEDS / CAGE:  Moto Tassinari VForce4 Reed Valve System
  • CARBS:  Stock Mikuni 
  • CARB JETTING:  
  • NEEDLES:  5N7U needles for Stock Mikuni. 
  • NEEDLE CLIP SETTING:  Center Groove on Slide Needle
  • AIR SCREW ADJUSTMENT:  3/4 turns out
  • FUEL RECOMMENDATION:  Premium Non-Ethanol (91-94 Octane) for 125-150 psi
  • WATER PUMP IMPELLER:  Stock - or - Billet Aluminum
  • CLUTCH: Stock Clutch
  • CLUTCH BASKET: Stock
  • CLUTCH SPRINGS:  3 Stock & 3 Heavy Duty Springs
  • EXHAUST:  TBD
  • STATOR:  Stock
  • TIMING: Stock (n/a) 

 

 

 

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References:

  • We calculate engine displacement based on the bore in the engine's cylinders and the stroke length of the crankshaft. Click here for more explanation in our Banshee Engine Displacement blog article. 
  • Click here for information about Banshee engine break-in procedures. This includes our recommendations for Fuel to Oil Ratios and Selecting the Correct Fuel.

About the Authors:

This project article was written by Janel with plenty of help from Virgil. Virgil is the Banshee mechanic, and I am the website mechanic. I do own and ride a Banshee, which helps. 

The Re-Do crew hopes sharing our project info and specs may help some with their own projects, or that you find it interesting. I want our technical info to be accurate and helpful.

Please do let us know if you like our project articles, or if you think I need to correct something. You can send an email to info@redo-parts.com - and your comments will be passed along to me. 

Thanks ~Janel 😉👌

Email to: info@redo-parts.com