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Bought on of the S&S solid lifter conversion kits 93-5068. Got the front block off and tried to install the new drop-in lifters. Won't fit. Lifter bore measures 0.517" on both. Three of the new drop-ins measure 0.518", the fourth measures 0.5175. My lifters look to be original and old Hydraulics fit nicely with room to spare. Do I have some one off lifter boddies or did I get a bad kit? Don't really expect that from S&S.
mine were a interferance fit and installed them with a fly press, I dont THINK they are meant to just drop in,
I have used 3 different makes and all were a tight fit
Last edited by magnum45pete; Jan 24, 2023 at 06:45 AM.
If I'm understanding the problem, it's the S&S lifter insert that goes in the hydraulic lifter that doesn't fit. Not the lifter in the lifter blocks. Is that correct?
If it is, I'd use a little emery cloth to dress the area on the S&S adjustable adapter that slides in the lifter unit. If it is the hydraulic lifter not fitting in the lifter blocks, they need to be honed to correct clearance. And I'd have that done at a machine shop using a Sunnen type hone so the bores are round and straight.
OK, Finally got some feedback from S&S. Their slugs do need to be pressed in (They might want include a note in their instruction sheet). Since I don't have a press, I will attempt a freeze fit first. Plan to heat the body in the kitchen oven. Don't know how hot I can get it without damaging the body or the roller. I'm guessing 200F will be safe, If any body knows better, stop me now. I plan to cool the slug using the Dust Off hack. I know that will get them down to about -45C. In the demo video, they were able to shrink a fairly large bushing 0.004" to 0.005". I have a 0.001" interference so, 0.003 or better should do it. Gonna have about a week delay till Home Depot can deliver the Dust Off.
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76 FLH Lifters
