ive had a few of those engines, there mitsubishi knockoffs, and ti varrys. i had one of them that was a great engine! it lasted years! but then the other day i got one brand new and it only lasted 50kms!
yep ive had 6 the first one was good lasted 250 klms all tho others had little mor than 2 hours on the clock before they kicked the @#%& 3 went on go-peds 2 went on monkey bikes 1 went to the dump when the piston broke into 9 peices and destroyed the whole motor