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'92 CX Twincharged D
1,522 Posts
d15z7 or D16w8 head is same casting as y8 head, the only difference is the y8 head doesn't have the extra oil hole drilled for the double vtec solenoid. I run one of these heads in 1g Integra as part of 13.25:1 compression motor. Thompson cycle sound very similar to Miller cycle used in Mazda's Millennium sedan in late 90's. What supercharger are you using? In my Twincharge D-series builds I use a SC14 88cid supercharger with a a/c clutch so it can be turned on/off with ecu or a switch. and turbo can still push air thru when clutch disengaged.
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