Craig:

That's correct. No such guide or seat change was necessary in aircraft engines since they've always used the proper seats. It kinda brought the cars up to the standard of the airplanes! <vbg>

Walter


On Mar 30, 2005, at 9:00 AM, Craig Berland wrote:

 "It is not a vapor pressure issue.  It   *IS*  an  octane issue.  
  The vapor pressure is mostly a  climb to altitude without vapor lock issue. George"
 
I agree with George on this 100%. The only thing I would add and George may have data to
support or resolve this...."No Lead" fuel required valve rotators and hardened valve seats to
prevent burnt valves and seats in auto engines. 1975 was the year. Dang, am I getting old?
Craig Berland