After drilling a hole in the piston, my engine now revs less.
I use NT carburetor. A hole in my piston. I tried both possibilities. With and without holes. I turned more rpm without the hole. After the hole was drilled, the rpm dropped. and the smoke increased. I thought it had something to do with the carburetor. I bought and installed OKO PWK. But unfortunately the problem is the same. It chokes at the last throttle and the revs do not increase as before. I use a G2 reed valve. Are full gas mixtures rich or lean? Main jet 115. Pilot jet 38.
What matters to me is top speed
I use NT carburetor. A hole in my piston. I tried both possibilities. With and without holes. I turned more rpm without the hole. After the hole was drilled, the rpm dropped. and the smoke increased. I thought it had something to do with the carburetor. I bought and installed OKO PWK. But unfortunately the problem is the same. It chokes at the last throttle and the revs do not increase as before. I use a G2 reed valve. Are full gas mixtures rich or lean? Main jet 115. Pilot jet 38.
What matters to me is top speed