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cleaning sludge

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Old 06-15-2012, 11:52 PM
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i just picked up a 5.3l to swap in place of my junk 6.0l. started disassembly and engine is full of sludge. heads are off going to see if i can find a place to either boil them or has a sonic cleaner. but what about the rest of the engine? dont want to pull short block apart but need to get the sludge out. am i screwed?
Old 06-16-2012, 12:04 AM
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Kerosene and a brush, then in the tight places use a tooth brush.....I'd go ahead and tear it down that way you are sure it is clean
Old 06-16-2012, 12:35 AM
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yeah its looking like thats going to be the best route. but what about the oil passages. seems like there is no good way to get those clean.

really didn't want to have to take it somewhere to get bearings put in it.
Old 06-16-2012, 08:31 AM
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Well you could try putting Seafoam in the oil passages and then blowing them out with compressed air. Then after it is installed and running Seafoam it and change the oil a couple of times.
Old 06-16-2012, 09:03 AM
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That or another old trick is to put a pint upto a quart of atf in with the oil, run it for a little while, then drain and change the oil....but if its bad enough for you to sorry about, you'll have to wonder if and where the chunks that broke loose went. Dont want to put the motor in and have to pull it and rebuild because oil wasn't getting everywhere it should
Old 06-16-2012, 09:44 AM
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this is just turning in to a nightmare blew my 6.0l up and right now cant afford to replace the pistons and rods so i was going to throw this 5.3l so i can still get to the track. but its problem after problem.
Old 06-16-2012, 10:28 AM
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If you have a gun shop....maybe even Walmart has a gun cleaning kit with the long handle gun barrel cleaner and some small peices of rags to clean all the ports out....just Mark all your parts as you tear it down and make sure you put it back together the same way. Pick up a good tub of prelube and tub some on all bearing surfaces.

Start now and it should be back together tomorrow!



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