The downside of sandblasting valve covers
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Publicado 2023-06-19
Todos los comentarios (21)
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Some parts of a car you do not sand blast.
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He bought the valve cover already sandblasted, so instead of saying he should've done something else or whatever, here's the context. He didn't sandblast it himself, so he did the logical thing and cleaned the aftermath.
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I destroyed a SR20 like this when I was in my 20s. Had it sandblasted, painted it all nice, thru it in and blew the motor in 15 minutes on the freeway.
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If you have the money for it, buy a machine that uses dry ice, it's more expensive but you dont have to worry about things like that
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Some valve covers have the baffles bolted or screwed on. I sand blast tons of miata valve covers because the baffles covers are only held on with screws. I put the screws and covers in a white vinegar bath while I sand blast, wash, and paint. Take the screws and covers out of the vinegar and rinse them well. Assemble the valve cover.
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As an engine machinist who media blasts internals regularly, I can't overstate how critical correct and thorough cleaning is. Followed by light oiling, rust dust as we call it will form within hours. Compressed air is not enough fellow gearheads, that stuff truly goes everywhere you don't want it.
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my motor loves sand idk whats wrong with everyone elses
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This is why you use a soda blaster, baking soda dissolves in water, so a quick rinse after you're done we'll get rid of all the contaminants, then use compressed air to dry.
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Soda Blasting! You should always use baking soda for abrasive blasting on engine parts. Its water soluble, you simply rinse or wash the parts to remove all of the abrasive. Harbor freight sells 40lb bags of baking soda..
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Don’t sand blast, use crushed walnut shells. Won’t destroy ur bearings, are softer than aluminum, & no grit.
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We rebuilt an airplane engine in A&P school. Lots of parts were glass beaded. No amount of cleaning got everything out. When we pulled the screens first run up, there was a good amount of glass beads.
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With how advanced chemical engineering is nowadays, there is absolutely no reason to sandblast a part like this.
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I'm a professional sand blaster, I work on some critical plane parts, and I agree with you
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Wow, i honestly never thought about that...thx for the tip
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Great point. You can also chemically clean valve cover with spray oven cleaner. It is serious acid so please use PPE and neutralize cleaner with warm water when it is done. Pat dry and put under sunshine to sizzle any remaining water.
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I sand blasted a valve cover on a 1995 Plymouth Neon ACR with the baffles still on but i used brake cleaner and compressed air to remove most of the sand. That was over a year ago and no problems yet, i guess only time will tell.
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It's not so much clogging the oil passages but the abrasive effect of the sand or glass from blasting on bearing journals causing failure
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Gran consejo 👍🏻👍🏻👍🏻, siempre todo debe estar muy limpio, y luego bien soplado, para una lubricacion correcta.
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You are supposed to use baking soda, not sand. Baking soda will wash out by dissolving in water. Soda blast, water wash, dry with air or heat, then spray with oil. Simple and safe.
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Its inaccurate to call it "downside". They just did not clean it. Its more of a warning than downside.
