To start with a 70mm threaded hole is CNC machined into the housing leaving a 48mm hole in the internal rotor housing face.
A solid billet Peripheral Port sleeve is screwed and bonded into the housing for maximum sealing reliability and strength. The sleeve is tapered from 50mm to 48mm to maximise air speed.
The housing is then pressure tested, sealed and placed back on the CNC where final machining is carried out to ensure exact heights and dimensions to suit our manifolds.
It is recommended that a new rotor housing is used for Peripheral Porting. Used housings will be measured and inspected before machining to ensure they are satisfactory to our strict standards.
All housings will need hand finishing to suit individual porting preferences. There is enough material in the sleeve for approximately 10 Degrees of opening and closing duration available for individual porting requirements.
For information on Peripheral Port Kits see the Peripheral Port section of our products page.
Browse these categories under "Peripheral Porting"
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