12-26-2011, 09:59 PM
(This post was last modified: 12-26-2011, 10:08 PM by bucketobolts.)
The specs list are for using 1.6 rockers. The 1.7 give about .030" more lift at the valve on the E cam.
I would swap the springs. Your adding a lot more duration and lift making the ramp rates increase, which increase the load on the springs. You may not have any noticeable effects, but most likely you will get some valve float on the top end. Another possible scenario is the valves may star to bounce at higher rpms. This could cause push rod failure and premature valve seat wear.
I would swap the springs. Your adding a lot more duration and lift making the ramp rates increase, which increase the load on the springs. You may not have any noticeable effects, but most likely you will get some valve float on the top end. Another possible scenario is the valves may star to bounce at higher rpms. This could cause push rod failure and premature valve seat wear.
'72 TBA...