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Be carefull resurfacing the head on the SOHC motor. Best I remember .010 is all you can safely go resurfacing. Anymore than that and you'll need a new head.



Single over head cam has nothing to do with it, it has to do with valve clearances. You can go 15 safely and more close to 20. But I recommend if going above 15 to buy a head saver steel shim. You don't have to buy or get a new head.

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