[FREDDY SANDOVAL]

Get a new jug, or send that one out to get re nycasiled

Order a new top end piston/ring, wrist kit, new head and a set of gaskets

Once you put it back together make sure to clean the pipe and silencer real good from possible debris, cleaned out your carburetor, and check your jets for not too lean

Check you cooling system for any malfunctions, before you hit the track for a break in session.

[josh martin]

Freddy is one the money with the upper end rebuild advice. While you are at it, check the shaft seals on the crank and for cracks in the carburetor boot. While the crown of the piston looks like the engine has been running rich, the damage to the skirt and pitting on the piston surface look like damage from being run too lean. Leaking crank seals and/or a cracked carb boot can cause this and make proper jetting impossible. Burned one down for exactly these reasons with similar looking damage.

[Greg Lindahl]

Manny.

Save yourself a lot of heartache by rebuilding the entire engine.  The parts you’re finding in the top end are likely a reflection of the whole engine.

Get an original Honda service manual and follow the specifications religiously and you’ll be happy.

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