Description
Yamaha Blaster Trail Ported Engine
This Yamaha Blaster trail ported engine combines fast trail porting with a freshly bored cylinder and rebuilt crankshaft. Built by KOR, it provides an assembled engine option for riders replacing an existing engine or completing a Blaster project.
Engine build details
- Fast trail cylinder porting.
- Fresh 66.75 mm cylinder bore.
- Wossner forged piston.
- Rebuilt crankshaft with Wossner connecting rod.
- Cylinder head modified for high-octane pump fuel.
- Fresh gaskets and seals.
- New OEM main bearings.
- New OEM transmission bearings.
- Oil injection block-off.
- Five-wire OEM stator included.
- Engine cases without damage.
- Rebuilt primary basket
- Stainless steel hardware
- Boyesen Pro-Series reeds
Application and installation
This engine is intended for a Yamaha Blaster project. Confirm ignition compatibility before ordering, particularly when installing an engine equipped with a five-wire stator into a machine with a different ignition arrangement.
Contact KOR for the required fuel octane, break-in procedure, and confirmation of supplied external components. Carburetor jetting must suit your exhaust, intake, and engine configuration. Use the Ken OConnor Racing jetting calculator.
Discuss your build with KOR
Contact KOR to discuss availability and your installation, or browse The Blaster Store for supporting parts. Shipping will be charged after the sale and depends on location.
Call (860) 230-5003 with questions about fitment.
