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Discussion Topic:
V8 Rings Reseat?
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dhoughland |
08-12-2018 @ 8:53 AM
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Member
Posts: 1
Joined: Aug 2018
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I have a 1940 with a flathead that hadn't been started in quite a few years. I lubricated the combustion chambers prior to starting, runs/sounds great but it smokes. Is there a way to reseat the piston rings?
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dandy32 |
08-12-2018 @ 9:06 AM
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New Member
Posts: 102
Joined: Oct 2017
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maybe just intake valve seals are shot from sitting
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40 Coupe |
08-12-2018 @ 10:51 AM
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Senior
Posts: 1679
Joined: Oct 2009
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Put Marvel Mystery Oil in the crankcase, follow label directions or slightly less MMO, with your oil and drive the car.
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shogun1940 |
08-13-2018 @ 11:17 AM
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Posts: 464
Joined: Feb 2010
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When does it smoke? All the time or on start up? Most smokers were caused by worn bearings not rings. If you think that it is the rings i would take the plugs out and spray pb blaster in ther for few times and see if that helps. How is the oil pressure? The last resort is to advance the timing until it pings and see if you can shake the rings loose. Goodluck
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supereal |
08-21-2018 @ 1:06 PM
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Senior
Posts: 6819
Joined: Oct 2009
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It is likely the rings are stuck in the piston grooves from sitting for years. Sometimes putting lube thru the spark plug holes can help, but it is a long shot unless the oil has plenty of time to seep down. It may be that the engine was badly worn and replaced long ago when it smoked.
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kubes40 |
08-22-2018 @ 5:57 AM
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Senior
Posts: 3407
Joined: Oct 2009
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How can a bearing cause an engine to smoke?
Mike "Kube" Kubarth
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cliftford |
08-22-2018 @ 8:10 AM
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Senior
Posts: 845
Joined: Jan 2014
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Worn bearings can cause excess oil on the cylinder walls, more than the oil rings can handle.
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kubes40 |
08-22-2018 @ 2:21 PM
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Senior
Posts: 3407
Joined: Oct 2009
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Worn bearings can cause excess oil on the cylinder walls, more than the oil rings can handle. Really? New one on me.
Mike "Kube" Kubarth
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TomO |
08-23-2018 @ 8:17 AM
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Senior
Posts: 7256
Joined: Oct 2009
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Me too.
Tom
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shogun1940 |
08-23-2018 @ 10:08 AM
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Member
Posts: 464
Joined: Feb 2010
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There was a test where you removed the oil pan and pressurized the engine with oil and counted the drips from each bearing. If ni remember correctly the max was 150 on the average car.
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