Okay so I have this weird engine rattle that only occurs when the engine is hot, and nearing top speed or closing the throttle slightly to maintain speed.
Does anyone have an idea what it might be? I'm guessing possible engime knock myself.
Setup: 15.15 SHA with a 66 jet, short intake manifold, 65cc airsal kit, machined down 65cc cylinder head for higher compression (185 psi compression), and a basic but wide exhaust to match the cylinder.
It does a nice 35mph with my weight on it and rides smoothly, apart from this dang rattle!