Ratrod720 Posted September 16, 2023 Report Share Posted September 16, 2023 So I'm making a turbo exhaust header for a Z22 engine. My dad says I should make them out of aluminium to match the head, and that this will prevent breaking an exhaust seal. However I'm very concerned that it won't hold up to the heat. If I ceramic coat them on then inside would that work? It is also way cheaper so that would be a plus. Quote Link to comment
thisismatt Posted September 16, 2023 Report Share Posted September 16, 2023 The head aluminum is cooled, the manifold is not. You'll melt a hole in it. 1 Quote Link to comment
Stoffregen Motorsports Posted September 16, 2023 Report Share Posted September 16, 2023 The only aluminum headers I've ever seen were COPO 427 factory skunk works headers on a '67 Corvette race car. They were actually cast aluminum. Pontiac had some for the race cars too. Boats use aluminum manifolds, but they are water cooled. So, no, you can't really make aluminum headers. They would be too flimsy. And probably wouldn't work that well either. Stainless holds the heat in, which helps scavenge exhaust, making more power. 1 Quote Link to comment
Ratrod720 Posted September 16, 2023 Author Report Share Posted September 16, 2023 Yeah that what I thought. Thanks guys. 1 Quote Link to comment
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