my exhaust smokes a lot on my peugeot 205 1ltr petrol 1990 since i changed the head with a used one from a breakers, the cam belt went so swaped the head. cud it be the valve stem seals or a piston ring? it didnt smoke before.
if you only warped the head by 1mm check by using steel ruler or known flat edge it can be skimmed usually �20-50 if there is no warping of the head or damage use the old head