tuning

Ok gents, got an interesting one for you. Got finished up porting and polishing an OEM cylinder and it almost feels like I’m hitting a rev limiter about halfway through the throttle curve. Absolutely cannot get it to build rpms. I’ve dropped the clip position thinking I just wasn’t getting...

What aftermarket carb should I use just did the tors removal it has 40 bore over fmf pipe 14t sprocket, it's a flat track set up with 18.5 tires thats why inused a 14t sprocket.....oh yea and learned quick nibbi carbs are not recommended for blasters