exhaust leak at header
#1
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exhaust leak at header
Having a problem with an exhaust leak at the header on my c5. I have mls gaskets on there now and its leaking at the bottom portion of all 4 ports. I purchased new ones and they arent sealing either, so the next idea is to put some copper rtv on there. I may also loosen where it slips into the x pipe and see if it will slide in a little more maybe causing flange to sit flatter against the head. Anyone else ever had this problem because its really starting to **** me off.
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I had the same problem when I installed my headers, they were leaking very bad from the gasket at the head. I was using the revised gm 13mm bolts and I don't know if it was them or the flange thickness difference from the stock manifolds but they were bottoming out without fully tightening the header. I put a washer and lock washer on each bolt to shorten them up a little and haven't had a problem since.
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I had the same problem when I installed my headers, they were leaking very bad from the gasket at the head. I was using the revised gm 13mm bolts and I don't know if it was them or the flange thickness difference from the stock manifolds but they were bottoming out without fully tightening the header. I put a washer and lock washer on each bolt to shorten them up a little and haven't had a problem since.