Any of the racing folk using springs to fix pipes to heads? I'm thinking of using this method for a set of T140D downpipes which need welding anyway, so attaching hooks for springs wont be a problem.
What I'm wondering about is the best way to fix the springs to the head. Drilling through one fin would be asking for the spring to saw its way through in time, I'd expect. I'm wondering about drilling through several fins each side of the port and dropping a stainless rod down the hole (leave bottom fin undrilled to retain it), and attaching the spring end to the rod. But I'm guessing this has all been done many times before and there are tried and proven methods?
What I'm wondering about is the best way to fix the springs to the head. Drilling through one fin would be asking for the spring to saw its way through in time, I'd expect. I'm wondering about drilling through several fins each side of the port and dropping a stainless rod down the hole (leave bottom fin undrilled to retain it), and attaching the spring end to the rod. But I'm guessing this has all been done many times before and there are tried and proven methods?