Re: hardened exhaust valves and seats for M

Posted by dr.sportster on February 25, 2005 at 18:07:13 from (209.247.222.85):

In Reply to: hardened exhaust valves and seats for M posted by zooeyhall on February 25, 2005 at 08:05:24:

Just my opinion ; the time to replace seats is when they are sunk so deep that the vavle train geometry from the stem sticking out further the other side gets messed up.Why mess with an iron head valve seat for worry of unleaded.Vavles dont need lead to seal.

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