Oil drains from the back and the front of the head are handled with brass fittings, nothing complicated, will be all available in photos when ordered.
The miata guys in the USA use stock pistons for that power but also mill the head a crazy 2mm off the face to increase compression to around 10.5:1 when going max NA as the chambers are quite big on all the B6 heads. On an A15 engine block the choice for 78mm pistons are so many that many compression ratios can be had for all kinds of applications.
Posted on: 2014/5/31 0:37
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