Originally posted by 91CoupeMike
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For the haters and second guessers, bench racers and more.
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Saying it a second time, although it's too late now...two words...BLOCK TEST! I blew headgaskets on my turbo car and neither one did any damage to the fire ring. They looked very similar to the pics you're posting....just not as bad. Combustion gases pushing over the top of the fire ring, damaging the gasket. Both with a failed BLOCK TEST. It's the first thing I'd do if I even remotely thought I had a bad gasket. The solution was ARP head bolts and ultimately different heads than the stockers.
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I use standard angle cut scrapers or a carbon steel square edge scraper and 3m rotorloc discs, usually the green ones. The square edge scraper is amazing, the machine shop I use in Midland ordered them for a friend and myself. I was pretty skeptical of how it would work initially, but after a little use learned it would be my "go to" tool for scraping and cleaning needs most of the time. The rotoloc disc make good sharpening tools when the fingers get worn down to near nothing, I also use them to roughly polish steel parts.
square edge scraper http://www.goodson.com/SS-4U-1-1_4_Wide_Super_Scraper/
3m rotoloc http://www.3m.com/product/images/Bristle-Discs-300.jpg
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