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I have Hedman headers which I painted after purchasing. By the end of summer the paint was off and had surface rust, so every year the headers came off for cleaning and painting. Finally sent them to Jet Hot for coating, excellent job and is still lasting, but was never really impressed with the amount of heat coming off them. Them the engine came out for another upgrade and with the S/C install I knew that the under hood temps needed to be reduced. So it cost about $100 buck for enough DEI product to wrap my headers, each tube got wrapped individually which is difficult on SBC headers, but the results are worth it. My 6t8 doesn't see rain which is a concern as we all know that cloth holds moisture which could cause rust, but the under hood temps are a lot lower and it still looks ok. Been on now for 5 years.
T
I've seen coated headers crack many times when wrapped. The wrap holds the heat in, on top of something that's already doing the same thing. Results in cracking. None coated headers, wrap away! 😎
I had my XSPower 1 3/4 SBC headers ceramic coated locally and they still look good and definitely reduced the underhood temps. I would not wrap coated headers......either.
I would not wrap any headers. When I wrapped my headers they disintegrated under the wrap into a flaky thin mess. It took years of course, but just buy good coated heaers, or get some good coating on them.
I'm not sure about Doug's Headers, but most of the header manufacture's I looked at noted that wrapping the headers would void the warranty.
They must have a reason.
