1986 Talbot Samba 1.4L Petrol · C922 SJM

Constructed from lightweight French steel with minimal inner-cavity wax injection, the Samba shell oxidises rapidly when exposed to winter road salt. Water enters through degraded windscreen rubbers and hatch seals, pooling on the floor pans beneath sound-deadening felt. On Cabriolet models, moisture leaking past the Pininfarina hood quarter seals runs down into the inner sills, rotting the structural box sections and floor outriggers.

The Peugeot-designed PSA X-engine (the 'suitcase' unit laid back at 72 degrees with an integral transmission sharing engine oil) features an aluminium cylinder block and head with wet cylinder liners. The cooling system has limited fluid capacity and relies on a compact radiator that clogs with scale. Overheating quickly degrades the cylinder head gasket and causes the soft aluminium cylinder head to warp, requiring skim machining and careful liner stand-out shimming.