* Valve Damage: A broken valve likely caused significant impact on the piston crown. This impact could have transferred micro-fractures or stress to the cylinder wall, even if not visibly apparent. Honing only removes a very small amount of material. If there are subsurface cracks or imperfections, honing won't fix them, and they'll likely cause problems later.
* Piston Damage: The piston damage itself points to a significant event. The piston hitting a broken valve likely created pressure and heat far beyond normal operating conditions. This can create stress and warping in the cylinder wall that honing won't address.
* Head Damage: Damage to the head requires assessment. If it's just a slight dent from valve contact, repair might be possible. However, severe damage may require replacement or repair that goes beyond simple machining.
In short: While a hone *might* be sufficient *if* a very thorough inspection reveals no damage beyond minor surface imperfections, it's highly improbable. You should strongly consider having the cylinder professionally inspected and measured. They will determine if it can be honed or if it needs to be bored (oversized piston) and possibly sleeved.
Taking the risk of just honing could lead to a costly engine failure later on. The cost of proper inspection and the potential need for boring/sleeving is far less than rebuilding or replacing the entire engine after a premature failure.
