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help with restoring aluminium calipers
Posted by Gerhard (more from Gerhard) on Sun, 20 May 2001 15:21:58
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Hi guys!
Question is not SAAB-specific but you are the most mechanicaly-minded bunch on internet that i have stumbled over yet. (911T-board is not as highly trafficked as this one)
I'm restoring brakes on my Porsche...it's 911T with 917-brakes (at least according to tag on the bag i got my piston-seals). Calipers are made in aluminium, and i'm going to take them off , pull out the pistons and "hone" (how do you call that?) the cylinder walls with some tool.
Now most of people suggest that i should use very "mild" polishing for insides of caliper-walls. I bought special "honing"-tool with small abrazive bricks that is to be connected to drilling machine. It states that it's for "renovation of brake-calipers" on the box. But abrazive "bricks" are made of some sort of porous stone-looking material. It's pretty soft but grainy material.
Should i go on and try to "hone" with this tool or use some sort of leather (as some people suggested). It would be pity to scratch walls of calipers that cost 600$ apiece.
Suggestions are wellcome!
Thanx a bunch!
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