it will surely leak - not enough meat to get enough clamp force.. a cut-off egr pipe flange with decent gauge sheetmetal/flashing will hold the pressure just fine, as long as the gasket seals enough tho
well, if you leave the egr valve inside intact, you wouldn't need to do anything. i'm not sure what gauge i've used, it was some leftover flashing material, i think maybe 20 or 22ga, 24ga i believe would be too thin.
The copper as a gasket of sorts might be fine, but I think csstevej meant the blockoff plate itself needs to be thicker than 1/8, and I would agree on that.
i'm not sure with the possible exhaust temps involved that you would want to use copper as as the blockoff "flashing" material? i don't really know my metallurgy that well, but i imagine you could potentially see 1300F and the copper might become rather weak at that temp, especially a thin 22ga piece
I would think you'd need to sandwich it between the manifold and a piece of thicker steel plate.
exactly. the EGR is already disabled, I am just looking to clean up a lil airflow while I'm in there replacing the intake with a clean one. I'd run a race pipe if I could but I wouldn't pass the visual.
Ahh ok, should be good then.
yeah, and i was thinking of temps right in the center of the exhaust flow, but at the block-off, it's going to be significantly lower. totally fine as you said
