WRX STI FOR SALE THINGS TO KNOW BEFORE YOU BUY

Such as predecessor, the EJ20 engine has an aluminum cylinder block with dry cast iron sleeves/liners mounted within. The commonest Variation on the Normally aspirated engine, the EJ20E, has aluminum alloy cylinder heads with SOHC structure (one overhead camshaft). EJ20 head characteristics 4 valves per cylinder and centrally Positioned spark plugs