Its between 5 to 6.5 hp.
13.6
Horsepower and cc(size of engine) do not relate like that. It could be a slow moving lawnmower engine of 5-6 hp or a highly tuned dirt bike engine of 30 or more hp.
how many cc is a 13 hp
190 cc. is about 5 hp.
Around 200 cc
This is from movingsnow.com: Here is a simple chart of approximate cc to torque to horsepower conversions. It's not exact, but it will give you a better idea of how big the new engines are. I used 3600 rpm in the formula for this comparison. 179 cc = 5 hp 205 cc = 8 to 9 Gross Torque = 5.5 to 6 hp 250 cc = 11 to 11.5 Gross Torque = 7 to 8 hp 305 cc = 13.5 to 14.5 Gross Torque = 9 to 10 hp 342 cc = 15.5 to 16.5 Gross Torque = 11 to 12 hp
3.3 HP
No direct equivalent. Engines of same cc may have different hp.
6.75 hp equals 283.5 cc
roughly 342 cc's to a 12 hp engine
5