Mazda Rotary Mazdatrix Renesis (RX8) Half Bridge Porting Template.

This template is for  “Bridge porting” the upper (secondary) intake ports on the front and rear side housings of the 2004-2011 RX8 Renesis engines. 

We still consider there is not enough port thickness, at the bridge area, to leave enough for a “safe” bridge strength at the center housing intake ports.