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Hardened Valve seats and guides

hje_326

CB750 Enthusiast
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I know in older cars you can replace the stock valve seats and guides to move away from leaded gasoline additives. Do they make hardened replacements for motorcycles?
 
The stock seats are fine in the 750 with unleaded. If you need new guides use A.P.E. guides...best in the business.
 
70's and older harleys and british are the only ones i know of. i dont believe unleaded is an issue for any of the japanese motorcycles made during the seventies . carbs are sure sensitive to ethanol though.

edit,i didnt see dd had already replied
 
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