whipper
Well-Known Member
Hi Im about to top pin my 225 promax. Who has done this. Who has not? If you havent are you worried about it and if you have have you ever had a problem with it? Im interested to find out how many side pinned 225 ProMax motors have failed? Im definatly going will 33cc heads because that will put me at a stock HP for my altitude. Im running at 2000ft and have 121 accross the board. With 33cc that should put me at 140 up hear. A little better than stock. I have A brucato ACU to feed the motor.