Rocketkid
Member
We are buiding a stroker engine, we are using "Dart Heads - Iron Eagle Assembly 200cc Runners, 2.02/1.60, 72cc" and cam, after 1500 miles we got stuch lifters about 5 of them they messed up the cam.
We put in a new cam the specs on the new cam are
" Operating Range: 2000-4800 RPM
Duration Advertised: 280° Intake / 290° Exhaust
Duration @ .050'' Lift: 214° Intake / 224° Exhaust
Valve Lift w/1.5 Rockers: .442'' Intake / .465'' Exhaust
Max Lift Angle: 107° ATDC Intake / 117° BTDC Exhaust
Lobe Separation Angle: 112°
Open/Close @.050'' Cam Lift: Intake - 0° BTDC (opens) / 34° ABDC (closes)
Exhaust - 49° BBDC (opens) / (5°) BTDC (closes) "
After 20 miles the lifters sounds like they are stuck again.
We have roller rockers installed on the heads.
any ideas why this is happening?
sam
We put in a new cam the specs on the new cam are
" Operating Range: 2000-4800 RPM
Duration Advertised: 280° Intake / 290° Exhaust
Duration @ .050'' Lift: 214° Intake / 224° Exhaust
Valve Lift w/1.5 Rockers: .442'' Intake / .465'' Exhaust
Max Lift Angle: 107° ATDC Intake / 117° BTDC Exhaust
Lobe Separation Angle: 112°
Open/Close @.050'' Cam Lift: Intake - 0° BTDC (opens) / 34° ABDC (closes)
Exhaust - 49° BBDC (opens) / (5°) BTDC (closes) "
After 20 miles the lifters sounds like they are stuck again.
We have roller rockers installed on the heads.
any ideas why this is happening?
sam