Finished up the EJ22 swap on the 99 Outback 2 days ago. It was a pick n pull motor, so a bit of a gamble, but it started right up. smoothed out pretty quick. But it's got quite the tap to it. Was worried about rod knock but the more I research, the more it sounds like collapsed HLAs.
Motor is a 95 2.2 out of a legacy. Prior history unknown except it sat in the Stockton CA heat with the engine drained of oil for a while. Gave it a new timing belt and fresh oil. Took it for a drive and the engine performs fine but has that annoying tapping.
I found this write up which was very helpful.
But my remaining questions are -
Do the HLAs pop out or screw out?
What is the torque spec for the rocker assembly bolts?
Any difference between the intake/exhaust side HLAs?
Any other tips or tricks from those of you who have done this before?