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Adjusting Chevy V8 Valves, Hydraulic Lifters, Old School, Hot Rod, Rat Rod '48 Chevy,383

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Published on Oct 21, 2010

The peice of paper shows the cylinder pressure readings and their corresponding cylinder number.
I have 400 miles on the engine so it may continue to seat in some.
I did a compression reading and No.6 was lower than the others. The cylinders averaged 129lbs of compression and No.6 is at 116lbs.
Not a big diff but I thought maybe just maybe the the valves were a little snug. The engine isn't missing,,I didn't check cam lobe lift. I just eyeballed as it ran.
I had read where 10% difference is considered "ok".
Listen for the lifter to "Clack",, then when it does,,stop and tighten until it stops,,then some Old Mechanics go 1/8 more of a turn tighter AND some go 1/4 more of a turn tighter.
That cylinder will miss for just a second as the lifter adjusts internally to the new setting.
The rags are just there to keep the oil from the other cylinders from flying on us,,lol.

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