Originally Posted by
Ed Funk
It's my understanding that mild steel crystalizes and becomes brittle secondary to the heat from the wrap. Stainless gets stronger and doesn't crystalize. On the Opel we tried the wrap===PITA!! Then had a stainless header made and had Jet Hot coating applied---good deal!
On the Hondas, I'm wrapping the header but only where it's in close proximity to the left inner CV boot (have had that fail-due I think to the heat at that area when sitting still, ie grid, impound etc). Holed the block at NJMSP last fall and had an oil fire, but was not exacerbated by the wrap.