Use Heatshield armor and stainless zip ties for test pipes to shield inner cv boots

[steved0x]

Originally Posted by alm001

I did the DEI wrap before I put the pipes on mostly because I like wrapped pipes. I think the straight pipe would emit less heat than the stock cats, but I have nothing to back that up.

The IR picture they show is impressive, but it reminds me of a crash course I took in "emissivity" when I put my hand on a copper pipe that showed 85degF to a IR gun, but in reality was over 140.

I didn't think about that - a Cat actually heats up quite a bit during the catalyzing process right?

I wish I had some before/after data, especially now that on my car all my exhaust is ceramic coated, that would have made for some good comparative info.

[WorkInProgressK]

Originally Posted by steved0x

I didn't think about that - a Cat actually heats up quite a bit during the catalyzing process right?

I wish I had some before/after data, especially now that on my car all my exhaust is ceramic coated, that would have made for some good comparative info.

Biggest difference is Cats loves cardboard boxes. Sorry I had too.

The real danger isn't that the pipe gets hot, its that at higher temperature it not only warms the air by convection, but radiates heat like the sun.

Most stock exhaust system uses layers of steel with air gaps to prevent that specific heat radiation. So despite the second layer being good at conduction, it block radiation efficiently.

For K to centegrade just remove 270. Since its exponential, the more something heats up the more energy it expels in wave form which can travel further then convection.

https://en.wikipedia.org/wiki/Thermal_radiation