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Bored&Stroked · 12-19-2020, 10:49 AM

What is going on with the 'Squeeze' is that you're altering the amount of thread "offset" between the two sections of the adjuster - causing the interference to be tighter. Essentially the locations of the two threaded sections are deliberately being misaligned - such that a sort of "bind" is being created between the two. On the original style Johnsons, this can be "adjusted" but squeezing the adjuster and putting more bind between the two areas.

One of the biggest problems with many of the re-pop adjustable lifters (other than poor materials, incorrect hardening and frequently shoddy production) is that folks try to use them with stock length valves and small base circle (high-lift) cams.

When you have to increase the installed length of the lifter (the distance between the base of the cam and the valve stem) - by backing the adjuster way out (attempting to make up for the small base circle cam), then frequently there is not enough of the threads in the adjuster to cause the "bind" that is supposed to keep them tight.

This is one reason that I run either longer length valves (SBC valves) or lash caps on stock length valves to increase their overall length and makeup for the small base circle issue mentioned above. I want the adjuster to be as far down in the lifter as possible.

12-19-2020, 10:49 AM	#4
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,240	Re: Adjustable lifter problem What is going on with the 'Squeeze' is that you're altering the amount of thread "offset" between the two sections of the adjuster - causing the interference to be tighter. Essentially the locations of the two threaded sections are deliberately being misaligned - such that a sort of "bind" is being created between the two. On the original style Johnsons, this can be "adjusted" but squeezing the adjuster and putting more bind between the two areas. One of the biggest problems with many of the re-pop adjustable lifters (other than poor materials, incorrect hardening and frequently shoddy production) is that folks try to use them with stock length valves and small base circle (high-lift) cams. When you have to increase the installed length of the lifter (the distance between the base of the cam and the valve stem) - by backing the adjuster way out (attempting to make up for the small base circle cam), then frequently there is not enough of the threads in the adjuster to cause the "bind" that is supposed to keep them tight. This is one reason that I run either longer length valves (SBC valves) or lash caps on stock length valves to increase their overall length and makeup for the small base circle issue mentioned above. I want the adjuster to be as far down in the lifter as possible.