Yes, this is normal.
It has to go to the bottom of the exhaust port. The 2 ports on the other side are the intakes, uncovered by the piston skirt into the bottom of the engine when the piston goes up. Amazing isn't it?
The 4 ports on the sides are called "transfers". They transfer from bottom to top, as does that 3rd intake port at the back of the cylinder.
wow thought something was wrong, but just my luck as soon as the cylinder was on it was back off again, when i tried to tighten up one of the nuts on the head another stud had pulled its way out of the cylinder with threads on it haha, have to take it tomorrow to get sorted and im ordering a heli coil kit tonight
Steve
this is to help "set & seal" the new gaskets, do the heat cycles, allow to cool completely, then retorque the head and base nut
but you cant really get into the cylinder base nuts with a torque wrench, so ill have to build it all up then take everything off again ?
http://www.blasterforum.com/engine-13/blaster-engine-break-44174/
Also, for some reason the way Yamaha designed the engine, the piston doesn't totally uncover the transfers by about 1.5mm, weird huh.
yeah i noticed that lol !