Q for mechanical types - lapping valves

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d0dja

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After months of faffing trying to get the spares I can finally start rebuilding my bike's head. I'm transferring the old valve gear to the new head -- I need to lap the valves. How much do I need to do that? Just a quick one, or give them a long polish in? Does it just need to be a thin ring, or try get the whole sealing edge to mate?

Any anyone know where I can get (or rent) a valve compressor cheap? Autozone only have a huge one for R350, and it's not the kind of thing I'm going to need very often.

 

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