Catching a non-rotating lifter on first startup.

4spdragtop said

Everything else associated with 2 ex is good? Spitballing here....spring? Pushrod? Rocker?
Glad ya caught it asap.

Click to expand...

Yeah, all three lifters in exhaust lifter bore #2 rotated easily. Pushrods were all straight, springs checked out before assembly, adjustable rocker moved freely and the tip was centered over the valve tip. The exhaust valve moved freely in its guide.

I installed the new cam/lifters and I did the exact same 15 second run on startup to confirm that all the lifters were rotating. Then buttoned 'er up and broke in for 20 minutes. I doubled checked valve lash and all 16 measured good.

This is an odd one. I'm super glad that I went through the lengths of checking lifter rotation. If I didn't I wouldn't have made it to the track the last summer.