All posts tagged Knucklehead

This is a new motor build for bruce, it’s a balanced and blueprinted engine with a barn-find patina finish.

This build was extremely challenging. The poor condition of the cylinder heads made for a lot of work. It took ~6hrs of welding, grinding, and machining to save the heads. All of the mounting tabs were broken, and there were cracks in the exhaust ports. Numerous fins were missing, and the cam cover was chrome plated – which needed to be undone. We chemically aged it to help match it to the rest of the engine.

This is the other Kuncklehead that Highway Choppers is working on.  The motor is done and now they are working on the chassis.

This is Gov’s late 30s/early 40s Drake Knucklehead.  It is a water-cooled, custom Knucklehead motor that was used strictly for dirt track racing in the late 30s and early 40s.  These types of motors were run in Midget Cars.  We are completely rebuilding and having to manufacture some of the parts because of how rare it is.  He plans to put it back in a race car.


This motor came from an original unrestored 1939 Knucklehead.  The customer wanted to keep the original patina on the motor.  We disassembled the motor, cleaned the inside, rebuilt all the internal parts, but left the outside in its original condition.  This will look very nice in his unrestored, original 1939.  Below is the start-up video.

We are restoring this for Larry.  The motor went through start-up already.  We installed the motor and transmission in the frame and are continuing the restoration process.