RustyBuckets
Full Access Member
- Joined
- Mar 23, 2013
- Posts
- 105
- Reaction score
- 5
- Location
- Kansas City
- First Name
- Jake
- Truck Year
- 85
- Truck Model
- k10
- Engine Size
- 350
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I've seen this several times with hydraulic lifters, and it was from not enough preload on the lifters and the plunger ends up beating the retainers out.
Adjusted loose just enough so they don't clatter, or reused factory nuts backed off over time(I hate them things). I never adjust them running E/O, I/C only, I never go more than 1/2 turn no need to and with good springs a 1/4 turn will give you a little more rpm, but general use 1/2 turn is plenty safe, just don't want that plunger to hit the retainer.That makes sense. So what you're saying the valves were adjusted a little loose.
I've always adjusted hydraulic lifters with the engine running. Back them off till they clatter. Tighten til the clatter stops, then go 1/2 turn past that. Books will always say 1 full turn after clatter stops. I've just opted to not go a full turn. To tight and you tend to put added pressure on your cam lobes and cause premature cam wear. Obviously, to loose this can happen. Knock on wood, I've never had this problem with 1/2 tun past clatter stop.
Adjusted loose just enough so they don't clatter, or reused factory nuts backed off over time(I hate them things). I never adjust them running E/O, I/C only, I never go more than 1/2 turn no need to and with good springs a 1/4 turn will give you a little more rpm, but general use 1/2 turn is plenty safe, just don't want that plunger to hit the retainer.
Yep, OLD ones,lol, that's the way I learned too wayyyy back in the day, then I talked to racers and cam MFG's and that was the end of that method,lol..I have old GM shop manuals that have you adjusted hydraulic lifters
with the engine running back them off till they tick then tighten til
the tick stops then go 1/2 turn