my drain plug fell out a while back and it blew my engine. so i bought a new engine off ebay and put it in. it feels like the bike is a lot faster. im light so the back tire spins quite a bit. i dont understand why it would be this much faster. i guess i dont care. i like it better newayz like this

 

yeah, i wouldn't complain very loudly if my bike were too fast...but I am surprised your tire spins so easily, my bike will lift the front tire before it will spin the tire...and I am average weight...at least I think so.

 

maybe the engine you got has oversized jets? watch what mileage you get.

 

not sure about the milage yet. i filled up one tank and went up palomar mountain which is a pretty long ride and still had a half a tank. i rode prolly like 65 miles so far on it