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Here, ATR headers are bolted up using SCE copper gaskets and a light coating of RTV. Note that the center bottom bolt hole hasn't been converted to a stud; the header clearance prevents it here, so an Allen bolt is used. Cotton's likes to convert over to ARP header studs for a build, as you never have to worry about stripping threads again. Once the header's washers and nuts are on, the headers are torqued "tight". One technique Cotton's likes to use is tightening these nuts multiple times, as the copper gaskets will settle in and loosen the nut a bit. Once it's been tightened four times, these gaskets won't leak. View Related Article
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