Can't Start His Wank
- Oct 4, 2005
- '08 Pontiac Solstice GXP
A PP will destroy a street port all over the map, even low RPM. They make huge power even down low. Fuel mileage is really the only downside.
The peripheral port is the ultimate form of porting for a rotary engine without turning to forced induction. Instead of conventional metal shaping with a grinder, the side ports are actually filled and completely new circular - peripheral - intake ports are fitted directly through the rotor housing and is easily identified on an engine by its tubular intake manifold. This modification has potential for over 300hp but as it is developed for racing, results in very poor drivability, fuel consumption and needs an exhaust system designed to produce excessive noise. Like the bridge port, the PP produces its maximum power past 8,000rpm creating increased stress and wear on components.
And instead of idling at around 1,000 ? 1,500rpm for the previous porting methods, the PP engine will not idle much below 2,000rpm and is impractical and virtually unusable on the street.
PRO'S: The ultimate form of rotary porting for maximum power
CON'S: Excessive noise, extensive intake mods, very poor drivability and fuel consumption, relatively short engine life, very expensive, narrow power band