4.0 lifter replacement questions

[Daryl]

Correction, a problem that doesn't exist anymore View attachment 160510

I’m confused. That happened because of torquing the rocker arms down the way the FSM states?

 

[Dougj169]

The 4.0 rockers are sitting on a fixed height anvil it is impossible to tighten one valve more than another without changing valve seating depth. Or the length of the valve itself or the pushrod length

 

[BlueFl.Wrangler]

The 4.0 rockers are sitting on a fixed height anvil it is impossible to tighten one valve more than another without changing valve seating depth. Or the length of the valve itself or the pushrod length

AHHHH
Its all clear to me now!!

 

[pagrey]

*cough cough broken piston skirt*

@DylanM345 and @02GreenTJ are suggesting this noise has nothing to do with lifters at all. I think they mean this has nothing to do with valves or lifters or rocker arms or torque specs.

Edit: I have no idea, never had a busted piston skirt

 

[D M]

I’m confused. That happened because of torquing the rocker arms down the way the FSM states?

no I was making a joke since my piston skirt broke at 97000 miles, jeep made an info bulletin talking about how they used inferior metals in the pistons from 97-02 on the 4.0. Broken piston skirt is actually a common problem for the early 4.0s ive noticed, but its really a hit or miss if you have it. mine was just unlucky to go at 97k, but on the brightside, we fully rebuilt it.