Charging, Turbo charger, All <a href="https://garage.wiki/opel/engines/gasoline/straight-4/14-l/a-14-nel/" title="Opel gasoline straight-4 1.4 L A 14 NEL engine DIY maintenance and service manual">Opel gasoline straight-4 1.4 L A 14 NEL</a> engines, At the cylinder head, First stage

by Roman Paulov