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Joined: Oct 2021
Posts: 39
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2021
Posts: 39 |
Just purchased a 1931 Chevrolet Independence with in-line 6 engine. It had not been driven for over 12 years but was restored earlier on. Engine clean and no leaks anywhere. Starts fine but the lifter noise seems excessive to me. Was told the engine had been rebuilt and I doubt if a couple thousand miles on it since. Could it be an adjustment that's needed? What's involved in the remedy?
Ted
TedG
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
Are you experiencing lifter noise or rocker arm to valve noise? Valve to rocker adjustment is a common item and there are fairly easy adjustments to get the 0.006" and 0.008" gaps.
How Sweet the roar of a Chevy four!
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Joined: Oct 2021
Posts: 39
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2021
Posts: 39 |
Could be either or both. The engine has been driven few miles since rebuild but has sat over ten years not having been started. Thanks for the response!
TedG
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Joined: Feb 2006
Posts: 2,262 Likes: 6
ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Feb 2006
Posts: 2,262 Likes: 6 |
Ted, if you don't have them already, you should consider buying the owner's manual and repair (shop) manual for your car. Both are available in reprint from www.fillingstation.comThey will help a lot with things like tuneups, valve adjustments, etc. All the Best, Chip
"It's wise to choose a SIX"
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
I would suggest lubricating each valve and tapping the top with small hammer and brass drift (or rod). With the rocker loose (valve fully closed) the valves should make a "ping" sound as it closes. If not the guide to valve stem may be a little tight. Lubricating and tapping should fairly quickly take care of any corrosion (rust). Also make sure that the ends of the rockers have been ground flat at the radius to keep it in constant contact with the valve stem (except when fully closed).
Many of us leave the valves on rebuilt engines a little loose (noisy) as the parts are adjusting to the others. After ~ 500 miles then most parts have "seated or worn in" and valves can be tightened to the recommended gap.
How Sweet the roar of a Chevy four!
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Joined: Oct 2021
Posts: 39
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2021
Posts: 39 |
Thank You. Reasonability certain at least 500 miles since the rebuild on the engine. Appreciate the commentary. Hope to address the situation this coming weekend. I will advise on the outcome.
TedG
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Joined: Oct 2021
Posts: 39
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2021
Posts: 39 |
Have the owners manual but need acquire the shop publication. Thanks for the response.
TedG
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Joined: Oct 2021
Posts: 39
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2021
Posts: 39 |
It was loose rocker arms. Adjusted to specifications and now purrs like a kitten!
TedG
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Joined: Feb 2006
Posts: 2,262 Likes: 6
ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Feb 2006
Posts: 2,262 Likes: 6 |
That's great news....enjoy your car.
All the Best, Chip
"It's wise to choose a SIX"
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