Originally Posted by
WLIU
The price for the overhaul of a cylinder is usually in the $400 range, plus you often have to add the cost of a new exhaust valve, a new piston, and a new set of rings. On a mid-time engine that just is leaking past the exhaust valve, I have been able to just get the valve seats redone, the valves cleaned up, the bore checks OK, paint, and done. If you catch the problem early and no new parts are required, it is not expensive in aircraft terms. If you have to buy an exhaust valve for a Lyco, then the price starts climbing.
Wes
N78PS