LOTUS FEDERL AND HCI Esprit Turbo 321 Stainless Steel Manifold/Rear System 
 
This product is for the Federal and HCI Esprit 
 
For those of you who haven’t seen the upgrades before, a recap on the history of the company and the product:
 
Alunox are an established engineering company that supply the motorsport industry with tailor made high end exhaust systems, made of exotic materials such as Inconel, titanium and 321 Stainless Steel etc. They also supply BAC cars with a full light weight for their current production car the Mono.
 
Alunox took on the job of redesigning the original cast manifold for the 4 cylinder Esprit due to its high failure rate and short life cycle. They are direct replacements for the existing cast items.
 
The manifolds are made from 321 Stainless Steel, a must for turbo applications to provide a fracture proof construction. The flanges are cut out of Stainless Steel and CNC machined to give an accurate fit. The collectors use burns double slip joints to allow movement during the heat cycle accompanied by the pivoting brace mounted at the back of the head. This setup maximises the protection against shock loading.
 
Main Production Process Techniques:
 
TIG welding is used throughout for all for all components along with purge systems for optimum quality, giving a smooth inner surface, high corrosion resistance and complete fusion.
All tubes are bent using a mandrel to maintain consistent diameters and maximise flow.
High precision dedicated jigs used throughout to maintain accuracy and product consistency.
 
The wastegate is a Turbosmart compgate 40 mounted on V-Bands which is included in the manifold kit