hi

how big (cc) can I go in enlarging combustion chambers?
and what is the safest side to enlarge ?

http://www.9q9q.org/index.php?image=tCIoNKkLH897 ( check this pic )

please post pics of ported / enlarged chambers if you have

your help is highly appreciated

 

ttt

 

The only gain you'll have from removing material in that area is to unshroud the valves. In this case they are not shrouded as they look to be stock sized valves.