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Old 09-09-2011, 01:26 PM
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Cleaning an assembled engine

I bought a truck with a freshly rebuilt engine, and with time found out several things about the truck weren't as advertised and he didn't put much of a top end to mate with the larger cam. So I wanted to check everything out.

In doing this I decided to buy a new set of heads, intake, etc. Now I have it apart I repainted it and cleaned it up, however I am concerned that even though I tried to keep it clean and to freshen up after each step that a piece of wire from the brush, or some foreign dust/dirt got into the cylinder wall or lifter valley. Especially from when I scraped the head/oil pan gaskets off.

I just got it painted and wanted to reinstall everything tomorrow. Is the best way to clean the sucker with some carb cleaner upside down on the stand? Obviously rotating through the stroke to hit all surfaces and then cleaning out the oil pan with a good wipe down?

I was going to run a few qts of oil through it to be safe just to get out dirt, RTV scraps and anything combustible. Then once partially assembled run some water through the water passages and let it drain out.

Am I missing anything, or do you have tips for a first time builder/repairer?

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Old 09-09-2011, 01:36 PM
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Shop vac the cylinders, lifter valley area, and wherever else you can reach. Change the oil and fluids after "break-in". You sound a little like me, OCB when it comes to cleanliness, it'll be alright.
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Old 09-12-2011, 10:18 AM
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So I slipped one of the heads on thinking I was ready to go after cleaning it all up really well. Apparently some of the carb cleaner I was using to clean the faces of the block and head bottom was still inside a bolt hole. It got onto the gasket. Will this contaminate/ruin the gasket? Plain ole Fel-pro blue so no sealant will be used on them. My gut says I am fine, but don't want to be repeating this in 6 months due to a bad seal.

Thanks guys.
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Old 09-12-2011, 11:29 AM
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For cleaning the block if you are having a hard time getting everything clean, you could try oven cleaner, I have seen it done before.
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