Why You Should NOT Use Exhaust Wrap on Your Cast Iron Exhaust Manifold
What kind of thermal barrier/insulation do you use on cast iron exhaust manifolds? It’s one of the most frequent questions we get at Heatshield Products. The majority of customers ask about if they should use or what kind of exhaust wrap to use on their vehicle’s cast iron exhaust manifolds. Our answer: do NOT use exhaust wrap on a cast iron exhaust manifold.
One more time. Do NOT use exhaust wrap on a cast iron exhaust manifold.
The main thing behind why you don’t use exhaust wrap on cast iron manifolds is the cast iron needs to breathe so it doesn’t exceed its maximum rated temperature. Similar to installing Heatshield Armor/Muffler Armor exhaust insulation, where you leave a section of pipe uncovered to allow the pip
