13B PP rotor housing Pro Series

All product development, testing, and CNC machine work is proudly done in-house at our Mt Maunganui facility using high-quality materials and equipment.

Included:
-CNC Peripheral porting – choice of 43mm MFR or 48mm MFR (includes mating port weld flanges, Viton O rings, Titanium bolts).
-CNC exhaust port.
-CNC waterjacket O ringed sealing inserts (no epoxy filler required, no internal or external coolant leaks over time).
-CNC spark plug socket recesses.
-Oil injector port elimination.
-Polished port closing edges.
-Manifold weld jig (holds port flange spacing and alignment while welding). Not pictured.

Note: 43mm port option is ideal for 290-320hp street/mild race use. 48mm port option has made over 340hp in competition applications.

The repeatability of CNC porting vs hand porting has shown dyno power gains, as well as tuning consistency. This is due to equal port flow characteristics on all rotors – both intake and exhaust ports.

We stock rotor housings with both port options.

Early 13B housings are also available (S3/GSL-SE Rx7 – water seal grooves in housings)

Optional extras:

CNC water jacket grooves (improves thermal efficiency on the spark plug side of the housing – extending chrome surface life and reducing spark plug hole cracks over time). $140 per housing.

Intake manifold kit – CNC IDA tapered flange & pair of alloy runners (cut runners to the desired length, then spigot into flange recesses for welding). Flange inside diameters are machined to match tube inside diameters so no port matching is required. $320.