Johnson HT-2011 hyd lifters
Is this what your lifter looks like?
These are the SpeedPro Anti Pump-up lifters...well, originally this is what my machinist picked for me and what I used in my 360 motor. I (as per the mfg instructions) had set them up for 0" (zero) preload...they worked great, but eventually I found out that (most likely due to some valve float) the lifter built enough pressure to actually pop the metal "spring" out...
This is the retaining clip really:
That was enough scare for me to source another lifter...or to better put it, the new updated version of the HT-2011R (R signifies the Anti Pump-Up), which now use a very hard snap-ring:
Is this what your lifter looks like?
These are the SpeedPro Anti Pump-up lifters...well, originally this is what my machinist picked for me and what I used in my 360 motor. I (as per the mfg instructions) had set them up for 0" (zero) preload...they worked great, but eventually I found out that (most likely due to some valve float) the lifter built enough pressure to actually pop the metal "spring" out...
This is the retaining clip really:
That was enough scare for me to source another lifter...or to better put it, the new updated version of the HT-2011R (R signifies the Anti Pump-Up), which now use a very hard snap-ring:
