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Originally Posted by charlie66
I'm sorry for being so redundant about this but I'm trying to take it all in. I have zero experience with hydraulic lifters. So, what would be the difference if I used the Short Travel JLI-ST2112OPR-16 to the Hy-Lift HLJ-A-2375SE lifter? What I think I'm understanding so far is one will rpm higher where the other will fall off at 6000rpm but will have pin oiling? with the oil band being lower is that better or worse reliability wise? I thought they all were Johnson made. From what I see Butler sells 4 different lifters made by Johnson? I know I'm dragging this but I'm real close on buying a set so if you can just bear with me on this . Lol
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It’s no problem. I enjoy cams and valve terrain stuff. Johnson, Taylor, MI and Topline Hylift Johnson, in Muskegon MI, are 2 different companies. Both are spin offs from the original Johnson company that went bankrupt years ago and both claim to be the original Johnson.
Your cam does not have a lot of lobe lift, the oil band position is not going to be a factor on either option.
Johnson, in Taylor Michigan, is USA made and make the 21120PR and the ST21120PR, they also make a full travel lifter for stock applications. it’s part number is just 21120. The ST2112OPR is as close and you can get to acting like a mechanical lifter. The limited travel 2112OPR are a little bit of a compromise, and are what I would do of those options. But Johnson may say other wise. Your cam probably does not have enough spring pressure to make a difference in lifter life on a ST. But the 21120PR won’t be much different and easier to set. Neither one has pin oiling as far as I know.
The Topline Hylift Johnson A- 2375SE is also USA made, and at the moment, they are the only USA made HR lifter for a Pontiac with pin oiling. In their testing the short travel lifter had up to 70% shorter life. So they do not offer a short travel. Instead they offer a “S” slow bleed. The down side is if the valve terrain has any sort of bad harmonics the lifter follows it and quickly looses control of the valves. If you know what you’re doing, like Jone’s 327, you can rev that lifter very very high. On a Pontiac with a cam like yours, with a typical dual spring they more or less clock out at just past 6000. You can over spring them, but then the valving can’t compensate and they still clock out at the nearly same RPM point. You can overcome those things with stuff like beehive springs and setting spring up close to coil bind. Your cam won’t make great power past 6K anyway. For a long life cruising lifter this lifter it is hard to beat with a rev limiter ceiling. . The tolerance are tight a generally needs 10w30 oil.