I'm thinking about getting a 2 stoke 500 sled engine, but does not come with the exhaust pipe. What kind of pipe would I need to buy / build to make the engine work. I hear alot about tuned pipes, How do build and or tune a pipe?
You can't really build a 2-stroke expansion chamber (tuned pipe) easily with ordinary workshop tools. Best bet would be to find the original pipe, or one from the same engine. If you're lucky there will be an aftermarket pipe which would be even better.