just wondering why you would want to change the timing gear, if that one drives fine then why doesn it need a new one (if it aint broke dont fix it haha) but if you do wanna change it i dont think it should hurt anything, i would say it would be an ok idea. just put it on the regular settings (some have advance and retard marks) just put it on the regular marks and it should work fine, what kind of timing set are you lanning on getting