that would depend on the engine's age, place of manufacture, and if it is modified (it has a ported head, V-stack, tuned pipe, Hi-performance carburetor, big-bore, ect.) or not.
If it was a chinese made engine, you are looking at about 8000-9000 rpm's stock.
However if it was a Zenoah G43-L, you are looking at 10,000-12,000 rpm's stock.
The modifications that are available for these engines can increase the engine power, but it also varies on what the modification is, where it can be placed, and will it affect the engine by helping it or causing damage. Anything can make any 43cc engine have a certain output of RPM's, but keep in mind that there are other things to look at when you determine an engine's power output. Suggestively, you should see a mechanic with a dynometer to see your engine's output if its on a scooter, chainsaw, weed eater, ect.
well 43cc engine problably around 25-30MPH
The engine size is NOT related to the speed. Speed depends on the make and type of engine, it's gearing, and on how well it is tuned
"43cc" is not a speed - sounds like the size of a small engine, but size does NOT define it's speed or horsepower.
A 43 cc scooter will usually top out at around 30-35 mph.
== Put on a better muffler, switch off the engine, or go slower.
It can go up to 45mp.with that engine do not fool it. {[it will go to fast]}.
how fast dose a 15cxp nitro car engine go in kph and how fast dose an 18cxp nitro car engine go in kph
how to make a pocket bike faster.
as fast as your engine turns the wheels
what is the sequence to start electra 43cc mini chopper
Not very fast, possibly about 25 mph.
it will go about 45-60mph