Sandblasting crank? - Team Camaro Tech
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post #1 of 8 (permalink) Old Dec 21st, 04, 08:40 AM Thread Starter
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Has anyone ever sandblasted a crankshaft? I had one set back for a long time now it has some rust on the counterweights and journals. Would sandblasting it be alright? Would it work? What type of blasting media should I use?
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post #2 of 8 (permalink) Old Dec 21st, 04, 11:56 AM
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Call your local machine shop and see what they say. If you "sand" blast it you are going to have to get it turned or polished cause the sand will ruin the journal surface. Bead blasting might work better (just be sure to clean if REAL good in the oil passages).

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post #3 of 8 (permalink) Old Dec 21st, 04, 12:59 PM
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Check with some of the local shops as the may be able to bake and blast it and theres no chance of blasting media getting in you engine.
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post #4 of 8 (permalink) Old Dec 21st, 04, 02:35 PM
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i would suggest walnut shell if you have to blast it . its the only media that wont do any damage.
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post #5 of 8 (permalink) Old Dec 21st, 04, 03:01 PM
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wouldn't hot tanking it strip the rust right off? It does on blocks....





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post #6 of 8 (permalink) Old Dec 21st, 04, 04:01 PM
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You could allways racer tape (Duct Tape) all the journals with a double layer of tape before blasting the counterweights. If the rust is deep on the journals, the crank should be remachined. If the rust has really pitted the journals i would probably stay away from it and find another crank. I have done this and we allways use glass beads in our blaster, # 8 grade i believe.

Just my .25 worth.

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post #7 of 8 (permalink) Old Dec 22nd, 04, 02:14 AM
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Rotating assemblies, heads, and intake manifolds are items I don't sandblast or blast. Too many pores for blast media to embed themselves, IMO.

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post #8 of 8 (permalink) Old Dec 22nd, 04, 08:32 PM
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You might try a scotch bright pad and wd40 on everything but the journals - try 600 /800 grit + emory cloth on the journals - it's about what the machine shop will use when they polish a crank....this really depends on the amount of rust -

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