Rubber on exhaust manifold?

[Gooly]

Hi guys,

This will inevitably be a stupid question that will probably have the answer I expected, but I will ask anyway.

I have an E36 328 with some cheap n nasty XS power stainless steel exhaust manifolds. The 3-6 mani has completely cracked and sheared just before where it joins to the downpipe (so when the 3 go into 1) so it is essentially running with the exhaust ending at the end of the mani. Having noise tested it at 105db at part load, and having it apparently louder from the outside, and also as the lambda sensor is in the downpipe and thus no longer getting decent readings, I need a quick way to fix this before I can find the time to get under the car to remove the downpipe bolts so i can get the manifold welded.

I have some short rubber piping from an S13's standard intercooler piping. If I bunged this over and jubilee clipped it on either end so that it covered and connected the two bits, would the rubber likely burn/melt etc? Do i have a temporary quick fix option that doesnt involve removing the bottom bit of the manifold?

[TheEnd]

Rubber no, but there's a good chance the pipe would be silicone which can have a decent heat resistance.

[XJ Flyer]

Intercooler piping will only be designed to handle air flow from the induction air side of a turbocharger which runs at nowhere near the types of temperatures found on the exhaust side especially nearer to the exhaust manifolds.The types of temperature involved at that point would require a decent repair which would probably mean a new manifold/s in this case.