Thread: Header/side pipes questions
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Old 02-03-2009, 09:01 PM
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Rare Iron Rare Iron is offline
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Use 3/8" flanges. 1/4" is too thin & will warp, also 4-bolt flanges are much better than using 3-bolt. Headers with 1/4" flanges always have problems with warpage & leaks. "Cheap" headers have 1/4" flanges.
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