RX7 Cosmo FC3S / FD3S / 20B Turbo Half Bridge Porting Template
Turbo Half Bridge Porting Template:
This is the same porting pattern used on Kyle's REW and 20B engine that powered the KMR RX8 in formula drift competition 2011-2018. This race proven design is perfect for that extra kick in your rotary engine horsepower goals! Proudly designed, manufactured, and tested in the U.S.A.
This template is dual purpose. Designed as a half bridge but if the bridge is not cut it is a great mid to large street port capable of strong mid gange and top end power.