Here is good ring test - get on the highway. Force transmission to downshift to high-rev the engine. The floor it. Then quickly completely let go of accelerator pedal.
Have someone follow you, get them to watch exhaust. If it smokes more around times when you let go of accelerator then you have shot rings.
Have someone follow you, get them to watch exhaust. If it smokes more around times when you let go of accelerator then you have shot rings.