Chevy 6.0 LQ4 Bearing Contamination from Spun 4&5 Main Bearings Plus#8 Rod/Piston Removal Inspection. Ok This is to demonstrate to anyone who is worried about doing their own rebuild just how tough these LS series engines are, so yeah to start out guys this is what happens to your new bearings if you do not clean your block/oil galleys out after spun bearings, now im also sure the contamination happened on first start up do to non-cleaning of the block/oil galleys after spun main bearings and this will show just how they fared for 5 years 20,000+ miles after being contaminated..
I know this video isn't very detailed but it really wasn't meant for upload, but i decided to go ahead and upload.. because it is helpful for learning none the less
Ok back story on engine, bought the 2004 2500HD 4x4 truck used, was in a flood also was an old oil field truck.. ok.. so, she had like 74,000 miles on her.. i drove her up to about 96,000 miles, until one day while out in the boonies hunting for firewood, the oil pump bypass valve stuck open and in order for the tow truck to tow me, i had to drive about 5 miles with ZERO oil pressure back to the pavement, at the time i reached the blacktop the engine locked up..
And so since i was in need of engine in my truck asap and the engine shop here was no help.. I knew what i was about to do would be something everyone could learn from, so i decided to work with what i had and in the short time i had to get the engine back in the truck, originally i didn't think the engine would last but a few months do to the non-cleaning, and in which i was making plans to take the engine back out and replace it with another.. though it never happened, because well, the old 6.0 she was a toughie BIG TIME..
I tried everything i could to throw a rod, spin a bearing or just cause the engine to stop running, in which it never happened, i spun her to 6700rpm on a daily for the first 2 years, then, 6400rpm for a while then 6200rpm for the remaining 3 years..
Also when i first put her in, she had ZERO oil pressure for the first few start ups and since i needed the truck moving asap i said O well and held the petal to the metal lol yea still stock limiter 5800rpm on ZERO psi for at lest a min maybe longer and then bam i got prime, now with the first oil change, the oil looked like a glitter factory lol BIG TIME but after the 2nt or so oil change the oil was fine and remained fine for the 5 years and about 20,000 miles later and the video above is what we have now..
Hope this video helps others with thoughts and worries they might have and answers questions they might have been wondering about so yeah :) enjoy and peace :)
Oh also these were Aluminum Silicon bearings stockers and replacement King's
Edit: Also On the spun #4 main cap, i used emery cloth and wd-40 to sand down the high spots..
But yeah so i made this testing out my new sony handycam, needed to see how the file would be rendered from 1080i to 720p its taken a few days now to finally get this new file format to work in my editer.. its been a major headache .. neways ill get to making a better version of this once i get used to this new cam :) hope ev1 enjoys the new cam :) zoom :) action :) hahhaaha but yea until next time peace :)
Tags: Chevy 6.0 LQ4 Bearing Contamination from Spun 4&5 Main Bearings Plus#8 Rod/Piston Removal Inspection, ls1, ls2, ls3, ls6, ls7, ls9, lm7, lr4, lq9, gen 3 series engines, gm gen 3