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Join Date: Jul 2010
Location: Cleveland, OH
Posts: 28
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Cleaning pistons
My pistons cylinders and rings are used and have grease and carbon build up on them. What is the best way to clean everything? I have brakleen and isopropanol but I don't know which is usable on my nikkies (Mahle). Any and all advise wanted, thanks.
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07-21-2010, 04:26 AM
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Join Date: May 2008
Posts: 726
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Soak in carb cleaner, 24 hrs.
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07-21-2010, 07:21 AM
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Join Date: Nov 2004
Posts: 219
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get the big stuff off, then soda blast.
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07-21-2010, 08:24 AM
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Location: Cleveland, OH
Posts: 28
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Thanks for the info, I'll go ahead with the soda blast. I asume that a dip in brakleen for 24 hours will work? what about the bores dare I even think about touching those up? there isn't too much dirt or grime in there I just want to make sure any tiny particles are not there when I put the pistons back in.
Andrew |
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07-21-2010, 09:17 AM
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I soaked mine briefly in Castrol SuperClean and then wiped them briefly with a green scotchbrite pad. The SuperClean will take all the carbon off. You must be careful how long aluminum stays in contact with SuperClean as it will discolor it.
Carb cleaner may be more gentle on aluminum and works well. I don't think brake clean would work as well. Once my pistons were cleaned up, I wiped them down with brake clean and then Isopropyl Alcohol and Kimwipes. Make sure you get the piston grooves. Good luck with it. BTW, if you want to clean the cylinder bores, I would scrub them with soap and water and a red scotchbrite pad.
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John Flesburg 2016 981 Boxster S.................| 1983 911 Turbo - (White) 1974 911 3.2 - Red Car........... | 1974 914-6 3.2 - (Silver) 1974 914-6 3.2, GT -(Red).......| 1974 914 - 2.7 GT Clone (TBD - Saphire?) 1971 914 (TBD)..................... | |
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07-21-2010, 09:40 AM
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Join Date: Jul 2006
Location: S. Florida
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One time when I had no other nasty chemicals around I used thick paste paint remover with methylene chloride and acetone among the ingredients to soften the hardened carbon on the piston crowns and in the combustion chambers and on the valves.
Worked real well, the crap wiped right off after sitting for a while. |
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07-21-2010, 10:03 AM
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Join Date: Nov 2004
Posts: 219
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soda's softer than aluminum and will not affect the surface.
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07-21-2010, 10:16 AM
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Join Date: Jan 2004
Location: CT
Posts: 11,565
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You can soda blast both the pistons and the exterior of the cylinders.
The cylinder bores should get a light scotchbrite to de-glaze them
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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07-21-2010, 12:50 PM
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Join Date: Aug 2008
Location: Palatine, IL. (N/W Chicago Burbs)
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Whats wrong with a wire brush disk, on the the grinder?
I know, I'm pretty sure, I removed the flash of tin in the process. Leakproof.
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07-21-2010, 03:16 PM
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| cleaning piston , cleaning pistons |
