Originally Posted by
PePeFIN Timed the cam in today and compared the two lifters a little. Both followers gave almost identical lift figures. Small difference, but that might just be because I was more OCD with the valve lash with the unused NOS followers.
Cam is Piper BP285, interestingly in 270, ex 272 degrees (advertised in270/ex290) and in 11.53mm, ex 11.11mm (advertised 11.81 both). Ex valves are just slightly longer which explains the difference in lift. For duration I would guess that advertised figure is theoretical and doesn't factor in valve lash.
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