Sandblasting An Engine?
Posted August 10, 2012 - 01:11 AM
- jd.rasentrac said thank you
Posted August 10, 2012 - 03:47 AM
Posted August 10, 2012 - 04:59 AM
Better you try to clean with a "chemical mace". Otherwise you can throw the engine away.
Posted August 10, 2012 - 05:13 AM
practice on some junk first before starting the tin-worm AND
Clean, Clean, Clean it when you're done
Posted August 10, 2012 - 06:43 AM
Posted August 10, 2012 - 06:48 AM
Posted August 10, 2012 - 06:57 AM
if the engine doesnt need to come apart for another reason i would just take off the tins,intake and exhaust manifold,plug a rag firmly into each port and then tape off each hole and blast away as is.
How many have you done like this and what kind of success have you had?.I know a guy that turned an engine into scrap real quick like this. You might get away with it if your using soda but not sand. Blasting media will get in places you never dreamed of or thought possible. It should be all torn down and then cleaned real good when done. Personally, I don't like to sandblast engines. I agree with JDRasentrac when he says use a cleaner and clean it.
Posted August 10, 2012 - 07:36 AM
Complete tear down. Remove all bearings, scrape off all gaskets. Use die-grinder with small scotch brite pads to clean all gasket surfaces. Blast the individual parts. Use a die grinder with "KNOT" brush about 1-1/4" diameter to clean the block outsides. Don't blast the block, piston, crank, or rod parts. Blasting has tendency to get very fine sand in the tightest places and not come out even with air blasting cleaning. If engine is running fine, just pull off tin to blast/paint, leave rest together and use the knot brush or the pads in the die-grinder as noted and paint when done.
Ditto on the Grump-ster & other posters above! Thre just isn't an easy quick way to blast an engine clean due to the moving parts and seals and non-sand friendly surfaces.. Take your time and the best thing I've seen is Goof-off or Gunk engine cleaner.. The 3M/Scotch pads are great for cleaning up gasket surfaces without resorting to razor blades like the old days..
Posted August 10, 2012 - 07:41 AM
I would never recommend using sand, aluminum oxide, "black-beauty", or any coarse media for engine parts.
Lower air pressure while blasting will minimize harmful effects, but cleaning will take longer. ....Holding the part farther from the nozzle, also helps prevent damage to sensitive areas.
I would never blast an engine block unless it was stripped and completely bare.
Never blast the cylinder bore unless it is going to be re-bored, and even then, care must be used. ....The only time this can be justified is to remove rust from the bore before machining.
Never blast bearings!
Posted August 10, 2012 - 11:16 AM
Posted August 10, 2012 - 11:29 AM