1.5 JB head question Post Posted 29 December 2014, 9:08 AM #1459707 (In Topic #193072) Mk1njected Settling In Hi, everybody. I,m thinking about to build an engine with a GTI head , JB bottom end. So the question is has anybody got pictures about a JB head? Especially on the combustion chamber. 0 guests and 0 members have just viewed this: None. Forum home Engines Big Block Carb Engines