The EE20 motor had an aluminium alloy cylinder head which was 17 mm thinner in comparison to the EJ20 engine. On top of that, the ingestion ports plus the diameter in the ingestion valves have been made to create a swirling result for the air as it entered the combustion http://katrinhandtowels00122.blogdigy.com/fascination-about-katrin-hand-towels-25441915