ROTARY ENGINE PORTING

Street Port

The first stop on rotary engine porting is a Street Port, and a great first step for increasing power during your rotary engine rebuild.  A proper Street Port opens up the upper area of the port allowing for increase air-flow and top-end power gains.  You can go with a “mild” or “aggressive” Street Port depending on your goals.  A “mild” Street Port will have virtually no effects on idle or gas consumption, where an “aggressive” Street Port may exhibit a slightly rougher idle and increased fuel consumption.  Additionally, an “aggressive” Street Port may have higher top end gains and the cost of slightly less torque below 4,000 RPM.

Race Port

A Race Port is the most aggressive rotary engine porting available before you get into Bridge or Peripheral Port.  Considered a step above “aggressive” Street Port – all the benefits are amplified, as are the downsides.  However, if you want the ultimate in power while still maintaining “acceptable” behavior on the street, this is for you.

Half or Full Bridge Port

A Bridge Port adds an additional port next to the existing port.  The “bridge” that now exists between the two ports is left to make sure you don’t lose a corner seal.  A Bridge Port provides massive gains in top-end power and air-flow, but at the cost of a very “lumpy” idle and some drivability issues.  If you’re looking for power and increased RPMs without concern for street use of volume, this is for you.

Peripheral Port

If power is the only thing that matters, nothing beats a Peripheral Port.  No more porting or polishing the stock ports.  Those are now filled and a new intake port is machined into the rotor housing. Peripheral Ports have no place on the street, as drivability is extremely poor and fuel consumption is even worse.  Not to mention, the sounds (although glorious) will be dramatically increased.  However, peak power can’t be beat.

CNC Intake / Exhaust Port

CNC Exhaust Port + CNC Stainless Steel Exhaust inserts to match is a product of many years of trial and error, in order to achieve best well balanced exhaust port for the rotary engine. The size, shape of the port yields the best flow of hot exhaust gasses, thus yielding faster turbo response, greater hot exhaust gasses expulsion, thus keeping the engine cooler under high stress loads. Service can be ordered as is or the final port shape along with Open and Close port timing can be changed by requested.

All Prices for Rotary Engine Ports are Listed PER HOUSING.

PLEASE NOTE: Turn around time for porting vary depending on work load. Additionally, timing just for inspection of parts may take up to two weeks. If you are working with a specific time frame, please Contact Us for more precise estimates.