- All pipe cutting was based on templates prepared using a freeware programme called "TubeMiter" - All tack welding was done on the engine with exhaust flanges bolted to the ports - Final welding of the pipes was undertaken by spotwelding the tackwelded assemblies to a steel frame to ensure proper alignment was maintained. - The flange plates were pressure sealed using "blue tack" mastic material and the ends of the pipe run were pluged with an endcap fitted with a hose nipple. The latter was then connected to a seperate argon gas bottle and the system pressurised with argon during the welding process. This prevented any build up of welding material on the inside and thus a smooth inside profile was achieved, not requiring any further treatment. Finally, the completed pipe system was then pressurised with air and each and every joint inspected for leaks using a soapy water solution.
