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Hope someone can teach me on this. Is it true that some valves are special and are not supposed to be lapped and if you do, you will do more harm than good? Second question: what is it precisely, that causes valves to wear?
There is a tool for lapping valves. Fits in a battery drill and it oscillates the valve. Saves loads of time and sore palms.Had mine for about 35 years and still going strong. They have something similar on Amazon for about 20 quid
Quote from: deltarider on January 10, 2022, 10:29:49 AMHope someone can teach me on this. Is it true that some valves are special and are not supposed to be lapped and if you do, you will do more harm than good? Second question: what is it precisely, that causes valves to wear?Additional question to this, what would make the valves special (do I have them? )
If you have that much pitting on the valve faces, the valve seats will also be pitted If you keep grinding you run the risk of stepping the valve face. This thread explains what needs doing. http://www.sohc.co.uk/index.php/topic,20419.150.html