Single Cylinder Overhead Valve (OHV) Engine Kit

Description

Sharing most of the moving parts with our single cylinder flathead model, this engine features pushrod actuated valves set in the cylinder head. This configuration is generally able to spin faster and run more efficiently than our flathead design it has so much in common with. For engine enthusiasts, this model pairs well with our other single cylinder models to showcase engine evolution in the last 75 years.

Measuring about 8.625 by 11.75 inches, our OHV  engine is not patterned after any particular engine – but is more about style and shared parts with our flathead engine.  The cam and combustion chamber have been split into two and relocated to either side of the piston to allow easy visualization of how the engine works (this technically makes it a cross-flow flathead engine).  It has our most detailed build manual, including a section on how four stoke engines work.  The manual is detailed enough to diagram where to spread the glue.  This is one of our easiest kit to assemble, and we rate it at a “precocious 13 year old” skill level.  Please view the links below to check difficulty.

This engine features twin cams, a 2.5 inch bore, and a 2 inch stroke.  It has around 60 parts.  Expected construction time is around 1 to 6 hours.

Building this engine:

Please view the Instructions to see if this kit is appropriate for you.