Valves have been pinging for a long time I had 300,000 mile before I made a round trip from LA to New Orleans.My plan is to make 500,000, no work ever done to engine.Except for ping everything, is wonderful,I like my Volvo. I also have a 1984 Carrera which is a thrill but I like turning over those zeroes on long cross county tips most of all in my 240 waggon. How much longer can I go before having the engine rebuilt? Is it possible to make 500,000 without doing any thing at all? I bought this car new (good day at the race track), my hobbie is to just keep it going and like any hobbie I expect to spend money, it is worth it to me just in terms of something to believe in; so what should I do (I drive 85 to 90mph and have only 1 ticket since 1968 which is a miracle).If I drove the Porsche the way I drive the Volvo,I would not have a driver's license or insurance or even a car (nor my 72 Norton Commando which I am too bald to ride but which I still love starting up). In any case the question is can I do someting about valve ping? Should I do something about It??? Please give me a clue about making it to 500,000.>pi

What is valve ping? If you mean the clicking of the lifters then vlve clearance can and should be adjusted as a regular maintenenace item. If you mean emgine ping which is another word for the sound of preignition or knock this is another issue related to the knock sensor and timing. If preigntion is occurring on a reguler basis engine damage can result.

There is no standard mileage before engine rebuild. The indicators to consider would be oil consumption and compression. If it comes down to rebuilding I would swap the engine with a used one of lower mileage. Never heard of anyone rebuilding that engine.