SHHHH.. dont tell my dad i took his engine apart, just to inspect the cylinder heads to see how much i could port & polish.
They are pretty pretty good but their are some spots that could be inproved but not enough to make a huge noticable differance. Engine is from his fjr 1300..
Mainly for people who race,
Port the cumbustion chamber.
B.B= bowl blend.
K.E= knife edge.
B=blend.