Oil loss only to heads
03-11-2019, 05:47 PM
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Oil loss only to heads Please skip to end to see actual question. The rest is just a little about the block.
So... Last year i had an engine cleaned, honed, resurfaced, new bearings etc. Bought new heads, cleaned and checked for warping. Bought new lifters and oil pump.
So i slap all these shiny new parts in my shiny clean block. Pumped the oil pump with oil, ran it and had a good 60-70 psi analog guage. Engine begins to get upto temp then dies.
I take the valve covers off and start the engine after it cools down and oil is just barely ( like an eyedropper) trickling out. Still good oil pressure though...
checked the main bearings and they look good and coated with oil, cam was not as oily but i used break in oil that was no longer present little 5w30 was though. Lifters were almost mauling.
So i pull the engine, find the engine shop installed the oil galley barbell backwards, as if they pushed it in all the way from the front of the block?
At this point i dont really trust the shop to relook at it and need some knowledge.
I guess my question is if not the barbell, how could i have 60-70psi oil and only get so little oil to the heads?
So... Last year i had an engine cleaned, honed, resurfaced, new bearings etc. Bought new heads, cleaned and checked for warping. Bought new lifters and oil pump.
So i slap all these shiny new parts in my shiny clean block. Pumped the oil pump with oil, ran it and had a good 60-70 psi analog guage. Engine begins to get upto temp then dies.
I take the valve covers off and start the engine after it cools down and oil is just barely ( like an eyedropper) trickling out. Still good oil pressure though...
checked the main bearings and they look good and coated with oil, cam was not as oily but i used break in oil that was no longer present little 5w30 was though. Lifters were almost mauling.
So i pull the engine, find the engine shop installed the oil galley barbell backwards, as if they pushed it in all the way from the front of the block?
At this point i dont really trust the shop to relook at it and need some knowledge.
I guess my question is if not the barbell, how could i have 60-70psi oil and only get so little oil to the heads?
03-11-2019, 06:11 PM
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So your saying that the O-ring on the Barbell was toward the rear cover, or was the o-ring facing the front of the engine?
03-11-2019, 06:53 PM
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03-11-2019, 06:56 PM
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Yeah, that’s backwards. They had to push it from front or else the o-ring would be torn badly. SacCity makes a billet barbell, and in designing theirs, they tried a front/rear o-ring, but it wouldn’t go past the internal oil passage without tearing up. You basically had a bad internal oil leak at the rear cover. I’m surprised it made that much oil pressure honestly.
edit...I got treed while typing. Lifters get oil first. It goes from lifters up pushrods, and down to cam bearings, then mains, rods last. The barbell being installed wrong is your problem here.
edit...I got treed while typing. Lifters get oil first. It goes from lifters up pushrods, and down to cam bearings, then mains, rods last. The barbell being installed wrong is your problem here.
Last edited by Che70velle; 03-11-2019 at 07:08 PM.
03-11-2019, 06:56 PM
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03-11-2019, 06:58 PM
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Quote: I guess my question is if not the barbell, how could i have 60-70psi oil and only get so little oil to the heads?
Oil is supplied to the rods and mains before making it to the cam and lifters and perhaps the leak around the barbell was enough to keep the oil from making up to the cam and lifters.
Oil is supplied to the rods and mains before making it to the cam and lifters and perhaps the leak around the barbell was enough to keep the oil from making up to the cam and lifters.
03-11-2019, 07:03 PM
#9
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Quote: I guess my question is if not the barbell, how could i have 60-70psi oil and only get so little oil to the heads?
Oil is supplied to the rods and mains before making it to the cam and lifters and perhaps the leak around the barbell was enough to keep the oil from making up to the cam and lifters.
Oil is supplied to the rods and mains before making it to the cam and lifters and perhaps the leak around the barbell was enough to keep the oil from making up to the cam and lifters.
03-11-2019, 07:09 PM
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Thats what i was hoping to hear, thanks everybody. And i seen that saccitycorvette barbel trying to figure this out, definitely gonna order it. Problem is i ran the engine long enought to turn the oil into metallic engine killer.
03-11-2019, 07:11 PM
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We are all three typing at same time...lol.
03-11-2019, 07:12 PM
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03-11-2019, 07:14 PM
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03-11-2019, 07:14 PM
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I figured since the LSX was a priority main oiling system so was all LS engines. I guess you learn something new everyday.
03-11-2019, 07:19 PM
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03-11-2019, 07:23 PM
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Ls platform is not priority main, which is the Achilles heel of the series.
03-11-2019, 07:29 PM
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03-11-2019, 07:31 PM
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To me the crank and crank bearing look as should ( a little dirty from dissasembling) the lifters look worse than the original 150k peices, and the oil pan needs a very deep clean
03-11-2019, 07:35 PM
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