I have a jabba sport ported head on the bench at the minute. It has cracked between the inlet and the exhaust valve on cylinder 1 and the crack has strected into the exhaust valve port. It failed a pressure test
I also see a crack in the same place in cylinder 2 but that didnt fail pressure test.
Are these cracks common to G60 heads? anyone have one out they can check.
Next question, does anyone know the Grade of aluminium that the heads are made from?
Last question, could i use a ported 8v GTi head? as far as i know the only difference is the g60 one is heat treated?