I just recently fired up a rebuilt flat tappet engine, and I've got about 2hrs running time on it.
It was suggested by RB83L69 that I look at the pushrods while the engine is running to check whether they're spinning, as an indicator of how the cam break in is going.
Well, there are 4 of them that aren't spinning.
Does this mean my cam is going to go flat on those lobes?
Should I just take the timing cover off the engine and put a new cam and lifters in right now?
I measured the lobe lift with a dial indicator and after roughly 2 hrs the lobes were all within .002" of being equal.

Give me some input on this if you can.

Thanks

 

I think that sounds like a good idea on a solid cam ,but it may not work on a hydraulic. It would be an indicator of a valve being too tight..hhmmm smart guy that RB83L69, I never thought of that idea.
Anyway, I would think that if you were to wipe the cam, it would be during break in which (for you)was about an hour and a half ago.

 

BTW, It's a hydraulic flat tappet cam

 

I guess I'll just check the lobe height again after a few more hrs running,
If it's only wearing at a rate of .001"/hr then it's not going to create enough particles to wreck my engine.
Oh... If anyone should happen to notice this question while you're busy bickering over whether long stroke motors rev as high as short stroke motors, feel free to contribute

 

You have a pretty decent amount of runtime on the cam. If I were you, I would readjust the lash, while running, on the four that arent spinning. See if that makes a difference. If not, wait until you start hearing one of them clacking. Usually when you need to keep readjusting its going flat. If you start ticking, start worrying.