I just ported and polished my intake and surge tank, runner, remove butterfly. how to clean the port head (without removing the head ... lol)the secondary port have really a lot of dirt inside
are what could be its posible? mazda millennia forged piston kl 2.5l bore is 84.5mm pin diameter 21mm or 0.827
http://www.importperformanceparts.net/imports/wisecopistons_mazda.html