hi
my friends hero bike engine is in very very bad condition cant even start it,, mechanic puts its estimated repair cost at around 6000+,,, so he is also very much overweight and wants to have bigger cc bike but no paisa for that so his only option is either go with rebuild or better if he can install a totally new engine.. he wants to install a bigger 100cc or above engine...[his bik is hero 70] , other option of altering the engine is not feasible cauz no good mechanic is at disposal who have done such task,,,so my 1question is can a bigger engine bee installefd on it bolt on fit... ? in that case which one ? and how much to pay for ? both old new..
thanks