CAST IRON REPAIR SPECIALISTS – HEADS, BLOCKS ETC – Lloyds approved welding procedure for repair of eroded, cracked and damaged Cast Iron /Cast Aluminium Cylinder Heads, Blocks, Exhaust Manifolds. Metal Stitching. Machining, Fitting of Valve Seats. Pressure Testing. Cleaning and Painting. 12 Month Guarantee. Looking like new ready to install! Breathe new life into damaged cast iron components.