BreckAConner
Member
I took a photo of the F22A1/4 and A6 cams together to show how to identify them based on stamp.
3A - F22A1/4
4B - F22A6
Information taken from Honda-Tech.com, Author is wagon-r. As CB7tuner.com has been unreliable these days for information, I’m not trying to steal information or members from other sites but more trying to preserve information. If more sites go down that’s more information lost.
All durations are at 0.050" valve lift. The F22A6 has an additional 6 degrees of duration and 0.015" valve lift on both intake and exhaust.
F22A1 F22A6
Measured
Exhaust lift 0.350" 0.365"
Intake lift 0.350" 0.365"
Exhaust open BBC 30 36
Exhaust close ATC -18 -18
Intake open BTC -13 -13
Intake close ABC 23 29
Calculated
Exhaust duration 192 198
Intake duration 190 196
Exhaust center 114 117
Intake center 108 111
Lobe separation 111 114
Advance 3 3
Degrees overlap -31 -31
3A - F22A1/4
4B - F22A6
Information taken from Honda-Tech.com, Author is wagon-r. As CB7tuner.com has been unreliable these days for information, I’m not trying to steal information or members from other sites but more trying to preserve information. If more sites go down that’s more information lost.
All durations are at 0.050" valve lift. The F22A6 has an additional 6 degrees of duration and 0.015" valve lift on both intake and exhaust.
F22A1 F22A6
Measured
Exhaust lift 0.350" 0.365"
Intake lift 0.350" 0.365"
Exhaust open BBC 30 36
Exhaust close ATC -18 -18
Intake open BTC -13 -13
Intake close ABC 23 29
Calculated
Exhaust duration 192 198
Intake duration 190 196
Exhaust center 114 117
Intake center 108 111
Lobe separation 111 114
Advance 3 3
Degrees overlap -31 -31