01Z28M6

Next question - Should I remove the carbon from these pistons? What is a good method to keep the scraped off deposits from going places like down the cylinder wall and onto the top piston ring? Thanks....

LS1MCSS

iTrader: (18)

Means that side to the front of the engine. Clean the carbon off with a scraper and hold the hose from a shop vac close as you do. Don't scrape hard enough to mess up the tops of the pistons. If they are smooth they won't develope hot spots.

vettenuts

iTrader: (4)

Coat the cylinder walls with oil, the carbon will stick to the walls and you can wipe them down. I used a bamboo chopstick, chips off the carbon and doesn't scratch the piston.

JPH

iTrader: (2)

DOT ALWAYS GOES FORWARD.

DONAIMIAN

iTrader: (18)

I used carb cleaner on mine. Or youcan use a plastic ice scraper.

PAGregSS

iTrader: (10)

I used a die grinder with a scotchbrite pad, like you use to remove gaskets, to clean the carbon off. Worked very well.

juice12ufo

Gumout carb and intake cleaner works very well. Use a plastic trowel to scrape it all off. I put my piston at TDC when cleaning them and then go to BDC and wipe the cylinder walls down.

Studytime

iTrader: (15)

I use a steel putty knife and a scotch brite pad.

A scotch brite pad on an air tool will make them look brand new again.

Ben T.

Ryan02SS

iTrader: (3)

Any type of pad or material that is softer than the aluminum and will not gouge, nick or mark the piston. Scotchbrite seem to work good. I use a similar pad with a dremel tool. Like was mentioned coat the cylinder walls with oil, i've found fogging oil works best as it's a little tackier than regular oil and catches the carbon better. Use a wet/dry vac sucking helps too. Put the piston your cleaning at TDC to clean. I also tape off the other bores and work on one at a time. After your done take the piston to BDC a few times wiping the bore with new oil and clean rags.