i just bought a 88 eight wheel argo it came with a tecumseh oh160. the motor smokes a lot, the oil (i just changed) is all full of metal and the output seal leaks like crazy. i would like to put a more powerful engine in it, i might need it once i get new bigger tires (22's) and i also like to hunt in the mountians. ive thought about trying to find a oh180, so the install will go smooth. i guess i would like to know what everyone thinks of my plans or if anyone has better ideas.