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EFV-8 Club Forum / General Ford Discussion / V8 Rings Reseat?

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Posted By Discussion Topic: V8 Rings Reseat? -- page: 1 2 3     supereal 08-28-2018 @ 12:15 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Excess bearing clearance is a sure sign that the engine is worn in more places, and a rebuild is coming up. High oil consumption can usually come from two places: leaks and worn parts. As most old Fords do leak, it is often hard to determine what is excessive. Blue smoke is always a sign of internal consumption. Another neglected place is the oil filler cap on the fuel pump stand. It contains metal mesh, and should be soaked in solvent to clear it occasionally. It doesn't take much blow by buildup to push oil from many places. TomO 08-26-2018 @ 8:40 AM reply profile send p.m. Senior Posts: 7256 Joined: Oct 2009 I always thought that the most common cause of low oil pressure is worn bearings. So if the bearings are worn, then the oil pressure should be less. The article was written within the last 25 years and pertains mostly to overhead valve engines Using the theory that excessive oil pressure causes oil consumption works very well with an overhead valve engine, but very poorly with a flathead engine. In an overhead valve engine, excessive oil pressure would deliver too much oil to the valve system, causing oil to pool on the heads and valves and then be burned. As the last word that I want to add is for the original poster. There have been many "snake oil" products introduced over the year to reduce oil consumption ans I do not know of any that worked. If your smoke looks blue, it is oil consumption. A good detergent oil may free the rings after many thousands of miles and MMO could do the same, but I would go with a 20w-50 synthetic oil until you decide to rebuild the engine. If your smoke is black, have your carburetor rebuilt. If your smoke is white, you have a leak of coolant into the combustion chamber and you will have to find the source and fix it. Tom shogun1940 08-25-2018 @ 7:24 PM reply profile send p.m. Member Posts: 464 Joined: Feb 2010 If you read the whole article it ends at the bottom by saying that too high of oil pressure will cause oil to be slung onto the cylinder walls and the oil control ring can not wipe the cylinder down properly. So if you get .004 thousnds of clearances rather than .001 to .002 it is possible to get too much oil on the cylinder wall. kubes40 08-25-2018 @ 9:44 AM reply profile send p.m. Senior Posts: 3407 Joined: Oct 2009 Tom, That article, although brief, is well worth reading, especially by those so interested in learning bit more on this subject. Mike "Kube" Kubarth TomO 08-25-2018 @ 9:33 AM reply profile send p.m. Senior Posts: 7256 Joined: Oct 2009 I have never heard the theory that worn bearings can cause oil consumption. Here is a link to an article that supports what I have been taught and believe about oil consumption. https://highwayandheavyparts.com/n-12786-excessive-oil-consumption-explained.html Tom kubes40 08-24-2018 @ 12:13 PM reply profile send p.m. Senior Posts: 3407 Joined: Oct 2009 Quote: I'm signing off on this subject. I would like to hear Ol Ron, Supereal, or others who care to address this. Me too. I am always willing to learn new things. Mike "Kube" Kubarth cliftford 08-24-2018 @ 11:43 AM reply profile send p.m. Senior Posts: 845 Joined: Jan 2014 I'm signing off on this subject. I would like to hear Ol Ron, Supereal, or others who care to address this. kubes40 08-24-2018 @ 9:16 AM reply profile send p.m. Senior Posts: 3407 Joined: Oct 2009 Quote: 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. What is an "average" car? And what exactly di this "test" attempt to show? Mike "Kube" Kubarth kubes40 08-24-2018 @ 9:14 AM reply profile send p.m. Senior Posts: 3407 Joined: Oct 2009 QUOTE: Since the rod bearings [and mains] are pressure oiled through the crankshaft, the greater the bearing clearance, the more oil will be pushed out. Yeah, I get that part of your theory. What I can't make the jump to, is just how this little "extra" being pushed out of the bearing area is going to manage to get on the cylinder walls in any amount that would effect oil consumption. Now, over filling the crankcase can cause too much rod splash but worn bearings? Really? Mike "Kube" Kubarth cliftford 08-23-2018 @ 6:34 PM reply profile send p.m. Senior Posts: 845 Joined: Jan 2014 Since the rod bearings [and mains] are pressure oiled through the crankshaft, the greater the bearing clearance, the more oil will be pushed out.

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