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Generation III Internal Engine 1997-2006 LS1 | LS6
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abrasives & cleaning pistons/deck

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Old 05-01-2011, 02:35 PM
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Default abrasives & cleaning pistons/deck
Getting ready to clean LQ4 shortblock...are these too abrasive to cleanup pistons and cylinder deck?

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Old 05-01-2011, 03:28 PM
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A red scotchbrite pad will be better than roloc disks and power/air tools.
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Old 05-01-2011, 07:06 PM
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If the pistons are out of the block I would soda blast them. I have used this methed and it removes carbon and everything without any damage to aluminum.
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Old 05-02-2011, 05:43 AM
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Originally Posted by firstgenguy
If the pistons are out of the block I would soda blast them. I have used this methed and it removes carbon and everything without any damage to aluminum.
nah, just cleaning up a shortblock for a head swap
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Old 05-02-2011, 10:11 PM
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Well the blue disc is for aluminum, brown mild steal and red would be inbetween.
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Old 05-03-2011, 04:57 AM
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ok, that makes some sense, they were labeled blue-fine, red-med, brown-coarse.

I know I don't want to alter the surface finish on the pistons or deck surface...
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