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Cut the ports on the header apart and make them individual. It'll seal easier and there's no reason for them to all be attached............ Attached to each other they just fight one another to mate to the head.
Quote from: Lance-W on December 23, 2019, 12:09:18 PMCut the ports on the header apart and make them individual. It'll seal easier and there's no reason for them to all be attached............ Attached to each other they just fight one another to mate to the head.Sorry if this starts a hijack, but I welcome this!I considered cutting my flange and separate the cylinders, I feel it may be cracking because it IS a one piece flange.On the other side of this coin, why the hell do these headers need to be stainless?? I can build a redneck header out of mild steel and they dont crack.. I'm sick of welding this one up that just cracked AGAIN!
Quote from: Enemy on December 24, 2019, 12:17:17 PMQuote from: Lance-W on December 23, 2019, 12:09:18 PMCut the ports on the header apart and make them individual. It'll seal easier and there's no reason for them to all be attached............ Attached to each other they just fight one another to mate to the head.Sorry if this starts a hijack, but I welcome this!I considered cutting my flange and separate the cylinders, I feel it may be cracking because it IS a one piece flange.On the other side of this coin, why the hell do these headers need to be stainless?? I can build a redneck header out of mild steel and they dont crack.. I'm sick of welding this one up that just cracked AGAIN!You gotta ask yourself what exactly is the bar between the ports doing after the flanges are bolted to the head. 1. Does it keep the header ports from expanding with the head or vice versa the header heats up faster then the head probably? If that's the case then every time it heats up it shears the gasket/seal between the header and the head and you have a leak!2. Does it have the same thermal expansion ratio as the big hunk of head so they expand together? I seriously doubt it!3. The header is carrying the weight of the turbo statically and dynamically? That bar between the flanges ain't doin shit to solve that problem. I would guess that's where you're cracks are coming from or it's the expansion within the header itself (all the tubes pulling and pushing on each other as a result of thermal expansion) which could probably be mitigated by some gusseting.