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Jul 21st, 2025 | | | | Joined: Jun 2016 Posts: 222 DLBrooks | | DLBrooks Joined: Jun 2016 Posts: 222 | This may be hard to get me an answer unless we can measure decibels, but I have a 54 - 235 -- hydraulic lifter engine. I did adjust 2 lifters and I have no hood on the truck yet. I may give all a half turn and see how it sounds. Lifters may have a problem but the engine does seem to run ok.
If you say no noise, I have a long way to go.
I am going to the Pumpkin Run today and maybe I can listen to another. I have not had an inline 6 for a while. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | First, examine the undersides of the rocker arms where they contact the valve stems. It's pretty common to find them worn concave so it's difficult, if not impossible to get a good adjustment- - - - with solid or hydraulic lifters. Yes, hydraulics should give virtually silent operation, as long as they're in good condition and adjusted correctly.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jun 2016 Posts: 222 DLBrooks | | DLBrooks Joined: Jun 2016 Posts: 222 | | | | | | Joined: May 2005 Posts: 1,624 Shop Shark | | Shop Shark Joined: May 2005 Posts: 1,624 | We use a piece of rubber hose or tubing with one end moving around the engine, the other to our ear. Listen for ticks or whatever under the valve cover. Others use a dowel or broom handle. You will hear things as there is a lot going on under there.
Another thing I did to get a better handle on any problems was to cut an old inline valve cover so the sides were still there but the top was cut out. I could watch the whole operation with the motor running and not get oil everywhere.
Six volt guy living in a twelve volt world
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