![\"20131213-164108.jpg\"](\"https:\/\/www.chinonthetank.com\/wp-content\/uploads\/2013\/12\/20131213-164108.jpg\")
<\/a><\/div>\nPiston on the right is the wiseco piston and the correct type of piston for a piston-port head.<\/p>\n
I’m slowly realizing I know jack shit about 2-stroke motors.<\/p>\n
I took my top end off.<\/p>\n
From what I can tell… Some dip shit before me put in a reed-valve piston into a piston-port engine.<\/p>\n
Let me back up a step if you know jack like me.<\/p>\n
Apparently in these old shitty jap 2-strokes, there are piston-port heads and reed-valve heads. Reed-valve is the newer style of the two.<\/p>\n
Basically it means what style of air \/ fuel intake is it. Piston-port uses the piston as the intake valve and the exhaust valve. Reed-valve uses flaps and piston as the intake valve and the piston as the exhaust valve. I’m sure my explanation is ultra generalized but from a beginner understanding it’s probably fine.<\/p>\n
Anyway, my engine is the older piston-port but when I took the head off the piston in it was a reed-valve piston since it has the holes on the intake side.<\/p>\n
The holes on the intake side of the piston lets the intake flow draw more air in which is something reed-valve heads want \/ need.<\/p>\n
No idea why someone put a reed-valve piston in a port-piston head. The holes would draw too much air from my understanding. I’m assuming it was a dip shit and this is one of the reasons the bike ran like total garbage. Anyway, I’m putting in a wiseco piston and doing the crank seals. Plus I’m going to try shaving down the bottom of the intake skirt a tiny bit as the dude in one of the bottom images suggests since I have a pod filter and jetted carb.<\/p>\n
Overall I’m cleaning this thing up a bit because it’s a piece of junk right now.<\/p>\n
Anyone know 2-strokes and have input \/ suggestions for me?<\/p>\n
Oh… and this thing is a joke to work on. Took like 5 mins to rip off the little shit it had on it. And another 5 mins to take the top end of the engine off.<\/p>\n