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Re: Gasoline: Leaded or Unleaded ??
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Posted by george md on September 08, 2004 at 23:27:06 from (65.216.222.118):
In Reply to: Gasoline: Leaded or Unleaded ?? posted by Bob T on September 08, 2004 at 19:11:16:
If you fellows worked in an automotive machine shop , you might have a different outlook on the no lead gas . Engines with hard seats or flame hardened cast seats don't have a problem with no lead gas. The older engines with the seats that are part of the head or those that had flame hardened seats that the hardening has been ground thru will wear the seat quite rapidly.For hobby or show tractors it will take a long time to cause a problem . Recommend that if you have the head off for any other reason that you get seats installed while it is off, saves the work and gaskets of doing it later. I have had ford and chevy heads in with the seat worn away so far that the lifter could not compensate for any more seat wear and then burned the valve. Install a set of hard seats and the problem goes away to stay. We did not have this trouble before no lead gas. george
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