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Old 12-05-2017, 07:42 AM   #1
Dave Baxter
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Default Removing Carbon

One more question for you guys? Does anyone know just what is used to clean and remove the carbon from the combustion chamber and the top of the pistons and piston ring grooves on the lycoming cylinder head and pistons, besides carb cleaner and a lot of elbow grease?

What do places like Gibson or others use to get these parts squeaky clean? Is it a hot tank like for automotive, or is their something one can use or spray on to loosen and remove the combustion chamber carbon, any thoughts would be much appreciated. Dave __________________


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Old 12-05-2017, 02:16 PM   #2
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I just did some Pistons the old fashioned way of scraping and scotchbrite on an angle grinder. The cylinders were done at a engine shop. If you can or know someone who can blast with walnut shells or maybe baking soda, that will clean with no harm. As a kid I worked at a car engine machine shop and they had a soap that would do wonders except foe EPA disposal, but man it was awesome.


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Old 12-05-2017, 03:20 PM   #3
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Walnut blasting is what the engines shop by me uses a lot. I dropped off some Ranger pistons and parts and for under a 100 all came back looking like almost new. Just be warned, every crevice, crease, hole etc etc needs to be blown out, etc to ensure the walnut material is all out. It sucks on threads. I had to use a thread chaser on every hole...but probably needed to anyway.
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Old 12-05-2017, 05:03 PM   #4
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+1 for blasting nut: read Lycoming Service Instruction 1418
Fly safe
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Old 12-06-2017, 12:53 PM   #5
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Was the soap Wildcat? We mixed it with gasoline to clean around the gas pumps every evening at a gas station I worked at in high school. Wildcat cleaned the concrete with ease.

Phil


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I just did some Pistons the old fashioned way of scraping and scotchbrite on an angle grinder. The cylinders were done at a engine shop. If you can or know someone who can blast with walnut shells or maybe baking soda, that will clean with no harm. As a kid I worked at a car engine machine shop and they had a soap that would do wonders except foe EPA disposal, but man it was awesome.
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Old 12-07-2017, 04:39 AM   #6
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Spray some nitrous through it. That removes carbon buildup!
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Old 12-07-2017, 05:33 AM   #7
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I dont remember what the soap was; too long ago. This was with water and it did not hurt aluminum so there was no lye. At first, the washer did not work well as the old help never cleaned it. I dug probably a years worth of sludge out of the washer. After, the parts looked like i had blast cleaned it. It took the paint off the cast iron; the aluminum was shiny. The proper way to clean is detonation. A little detonation for 10 minutes should clean the combustion chambers and pistons.


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