Hi Rysium,
Notice the G26 piston and transfers. It also has a full disk counter weight to stuff the case.
Dave
ORIGINAL: davewallace
Hi Jose,
I did some calculations and found that the 25cc trimmer transfers are less then 50% of the diameter of the cylinder bore. It should be OK, but I would recomend opening the exhust side transfers only. this will leave the center ring support while giving more cross section area. I am attaching a pivture of a G26 cylinder and piston. By the way your english is great.
Dave