A “ring job” is an out of date term. It was a common job, especially on in line engines from Henry Fords Day until the 60s. Most independent shops did complete ring jobs and polished the valves and there were travelling machinists who did the work at used car lots repairing the engine only as needed. They could even turn the crankshaft down and polish it from under the car. If a cylinder was not galled ‘10-Up’ rings could be installed on weak cylinders to increase compression and reduce smoking and oil burning without machining the cylinder. A quick patch job, run the clock back to under 60,000 miles and a clunker could become a cream puff over night. Today the engine compartment on even the most basic models makes such a project totally unrealistic.