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Sand In Engine : How to Safely Clean/Flush
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05-28-2023, 05:54 PM | #1 |
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Drives: 2007 BMW 335i Coupe
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Sand In Engine : How to Safely Clean/Flush
First, some caveats:
This engine is on a rack. It has not been turned over or ran at all. I was performing an engine swap on my 335I, replacing my N54 that had a rod knock. The exterior was getting sandblasted before painting/polishing the engine block, and unfortunately, a piece of tape gave way and blast media was able to enter parts of the engine. As of now it appears that it is in the crank case, and on the valves. I do not think it is in the cylinders…. Yet. I have sprayed with brake cleaner and diesel fuel, but I feel that much more needs to be done before I close the engine up. Here are my ideas:
Here’s a picture of the engine and its current state, so you good idea of how far is broken down. Mark it up to a hard lesson learned. Just to get it out of the way, yes, I was dumb.
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2007 BMW 335i M-Sport Package
Wagner Evo1 FMIC, VRSF Catless DP, MHD Stage 2 Tune, VRSF Chargepipe w/Tial BOV, H&R Sport Springs w/Michelin PS4's |
05-28-2023, 06:31 PM | #2 |
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i looked up "what is the diameter of a sand particle from a typical beach" and it states it is 0.06mm to 2.0mm.
you could attempt to id the diameter of the sand used in your blasting process (ie: grit #, etc). once determined, you could then attempt to speculate if a particle that size could pass through a bearing journal's design clearance. this wild attempt to id all of this may tell you what the risks are if a particle of sand did not get flushed and remained in the engine and found its way to a bearing journal. i am hopeful someone will post that has experience in such matters and can provide you with options. Last edited by E93Seattle (Racerbruce); 05-29-2023 at 02:21 PM.. |
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05-30-2023, 05:09 PM | #3 |
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Drives: 2007 BMW 335i Coupe
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That’s an interesting approach.
I think the blast media used was aluminum oxide…. Med grit Maybe that makes a difference?
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2007 BMW 335i M-Sport Package
Wagner Evo1 FMIC, VRSF Catless DP, MHD Stage 2 Tune, VRSF Chargepipe w/Tial BOV, H&R Sport Springs w/Michelin PS4's |
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