How many RPMs does it put out stock?
I am trying to get it to run a two seater kart with shocks, and I weigh 125-130 pounds.
I am trying to see if they have enough power to get me going a good speed.
I heard you can get them to 5000 Rpms with taking the govener off, but I would need a way to know how many rpms I am putting out so I don't pass 5000 and blow it.
5000 your looking to blow your engine after a while. The stock is 3600, they make small tachometers you can buy. They are around $20, search for tach threads there were a few with the tach linked. You can buy parts to put out 7000rpm. That will cost you around $300. I would consider getting a 420cc predator. you will be able to gear higher giving you more speed. Check out torque converters too, they are a great investment.