hi all, I’m fitting new heat exchangers to try and eradicate a popping sound .First I took the main silencer off started the engine and found the right side to be the culprit (popping sound) Old ones off new ones one side going on ish . It seems the old exhaust had less mounting material so the head studs had plenty of thread to add exhaust nut . Also there were no copper gaskets . Is this normal? Or a bodged PO ? How do you get the copper gasket to stick to surface before fitting heat exchanger? I used copper slip not sure if this is right . Thanks in advance Paul
Should always have the copper gaskets on ...yes they are a pain if they drop down ....i have had some from VW Heritage that were just that bit more fatter and they stopped up ..the last two times to be honest , otherwise grease or copperslip would do if must ...al be it the smallest amount possible . Also you are supposed to aneal them to cherry red then quench the copper gaskets ...maybe that fattens them up a fraction .
Hi found that 1x gasket missing ( new one installed) 1x gasket stuck in head ( removed new fitted) The other issue the exhaust mounting faces were out of parallel = not tightening evenly.
