Hyd or Mechanical Roller?

Cudafever said

So in a mild or street form, you would still recamend they be check/rebuilt in the 40,000 mile area?

Brian, How long have these lifter been on the market.
It sounds like they haven't been on the market long enough to answer all my questions:tongue8::-D

Click to expand...

Please note…..

That 40,000 is the outside range. With high spring pressure, high RPM use or not staying on your adjustment you could get only 10% of that life before a lifter rebuild.

One of my lifters failed in 2000 miles but it saw 8000rpm MANY times in that 2000 miles.