Quote:
Originally Posted by THE CREW CHIEF
About twenty five years ago all we had was EGT's. We would lean the carb out until
it hit 1,350 F for circle track and about 1,450 F for drag applications.Whenever you
take fuel away it's going to get hot very quickly.
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You were likely going from a rich condition to something closer to stoich. This results
in an increase in flame temperature. In contrast going from stoich to 30:1 will reduce
flame temperature substantially.
Changing air fuel ratio can change the combustion rate. Slower flame rates
can result in an increase in post flame reactions with higher EGTs