Originally Posted by B1MAXX
for future reference how are you testing them?

I'd like to second that request...when I read "...air blow thru test...", to me that means:

1) clean the lifter
2) feed air into the oiling hole on the lifter body (normally the part of lifter body which is located in the lifter bore)
3) watch the pushrod cup move up to the fully pressurized position

...makes sense?

I think the last install of hydraulic flat tappets I did I used the approach fast68plymouth described, but these were the anti pump-up lifters, so I literally ran them with 0 (zero) pre-load, and therefore didn't worry much about them getting too pumped up at the start.

Now that I'm moving to the hydraulic roller setup I'd rather spend whatever extra time it takes to measure & verify in order to hopefully give me a better final outcome.