Complex sentence: All TX models shared the same 1.6 litre SOHC Isuzu engine (coded the G161Z), the engine was chain driven and incorporated a cross-flow design alloy head.
Split into simpler sentences: All TX models shared the same 1.6 litre SOHC Isuzu engine (coded the "G161Z"). The engine was chain-driven and incorporated a cross-flow design alloy head.