YAMAHA YZ250 CYLINDER HEADS
KTM125 HEAD
KAWASAKI Z1000 HEAD SKIM AND NEW TIME-SERT PLUG INSERTSALTHOUGH THE HEAD WAS SKIMMED 10 THOU TO MAKE IT FLAT BUT THERE WAS STILL SOME AREAS OF CORROSION WHICH WAS OVER 1MM DEEP BUT DIDN'T AFFECT THE HEAD SEALING!