Or just remove the governor, people act like its a big no no. It's a small engine that costs $100
But buy the correct parts for safety and you'll see a big difference .
The reason it is a no no around here is because the owner of the site does not want the liability for other people's mistakes and bad advice.
I suggest you take a close look at the magnet on the flywheel.
Its held in place with a machine screw and some epoxy
Look at the general layout of the engine the shape of the coil, the gaps around the magnet and then then think about how a magnet failure can cause the whole assembly to break up and fly outward like a grenade.
What is the probability of that failure?
I can't answer that, but I have seen several failures and I am scared of it.
The owner of this site is scared of it too.
Many other people are so scared of it they had Steel billet flywheel made to eliminate the risk.
And here it is.
http://www.gofastkartparts.com/wp-content/gallery/clone-performance-parts/Billet-Steel.jpg