- Joined
- Dec 10, 2008
- Messages
- 7,253

Here is what happens to the cam when the valve spring pressure is too low over the nose of the cam. This was caused when my exhaust valves eroded the seats and the valve spring installed height increased too much.
Note the damage is on the closing side of the cam lobes and just on both exhaust lobes.
It's from the hammering that happens when the follower can not follow the lobe.
Note the damage is on the closing side of the cam lobes and just on both exhaust lobes.
It's from the hammering that happens when the follower can not follow the lobe.