I have a leak from the exhaust where the primaries go into the 4 - 1. Gas is leaking around the edges of the primaries as this is just an interference fit. This creates noise, currently I'm at 101dB and want to get below 100dB if possible, but more significantly appears to be causing a misfire as well as the usual pops and bangs
I've had several goes at sealing it without luck so far. After reading that high temperature silicone was the way forward I bought some high temperature instant gasket stuff but this doesn't seem to work for long.
Anyone got any bright ideas? Is there a better type of silicone I could try? Is there a secret to getting the stuff to stay in the small gap between the collector and the primaries? Any advice or cunning plans much appreciated.