Exhaust port timing?

[Sprint 77]

Do most of you strong engine builders set your exhaust port timing at 180 degrees?


I run 100 LL octane fuel always so I was thinking of dropping the cylinder by about .030" for more squish, What are some of you other engine builders doing?

 

[Kaz the Minotaur]

I have a question related to porting...


Will changing the porting effect when the motor "gets on the pipe"?

 

[Sprint 77]

Yes it can make it earlier or later depending on how you do it most generally it is later in RPM but way more violent after porting

 

[Kaz the Minotaur]

Violent is good!