how often do i need to tighten my intake bolts?? just curious
and will 1.6 rockers really make a difference in my engine?? someone told me to change the rockers?? should I?? THANKS

 

the intake bolts, check them i guess, if they loosen up, you will have a vacuum leak or maybe water in your oil. The 1.6 rockers will give you more lift, this means a little more power. if your running a huge cam, the 1.6 rockers might not work, because your heads can handle only so much lift. if you use roller rockers, you will gain power. some companies claim 20 hp gains but it depends on your application.