12-07-2011, 12:33 PM
A lean engine does tend to run hotter than a rich. But a lean engine will burn all the fuel in the chamber and tend to "look" for fuel in intake.
On the other hand a rich condition has excess fuel exiting the chamber and igniting in the exhaust.
When you follow the flame travel from combustion, lean travels toward the intake burning he intake valve, and rich travels down the exhaust.
On the other hand a rich condition has excess fuel exiting the chamber and igniting in the exhaust.
When you follow the flame travel from combustion, lean travels toward the intake burning he intake valve, and rich travels down the exhaust.
'72 TBA...