whats a port?
#1
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whats a port?
i keeps seeing ports mentioned like thier some big deal. people talking about half bridge ports , street ports etc. do these have some special impact on rotory engines? what are they?
:cheers:
:cheers:
#2
Former Moderator. RIP Icemark.
changing the porting on a rotary engine is the same as changing the cam on a piston engine. It changes the intake (and sometimes exhaust) operation, generally to be less fuel efficent, but create more horsepower.
#4
I wish I was driving!
Originally Posted by geckospec
i keeps seeing ports mentioned like thier some big deal. people talking about half bridge ports , street ports etc. do these have some special impact on rotory engines? what are they?
:cheers:
:cheers:
The stock ports have a very specific shape. When you change the size and shape of these ports, you call it something else... a street port is a port which is slightly larger than stock. A bridgeport is when you physically cut a second port right beside the normal port... there are some very specific reasons for doing this that would take far too long and be far too complicated to explain to a fresh-rotary enthusiast.... just think of a bridgeport as a port that is much larger than a street port.
By changing the size and shape of the port, you alter the port duration and total airflow... same as changing a cam on a piston engine. Each different port shap and size has its own unique affect on powerband of the engine, and tis total power.
#5
I wish I was driving!
These are intake ports only... there are separate ports for the exhaust gases, but they don't really change much in shape, merely size.
http://www.fc3spro.com/TECH/PORT/porting.html
http://www.fc3spro.com/TECH/PORT/porting.html
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