In a Rotary engine, the port timing is equivalent to a camshaft in a piston engine. The higher the top of the port, the later the intake or exhaust is closing, and the longer the duration. On the exhaust port, the lower the bottom is, the sooner the port opens, and the longer the duration is. On the intake, the opening is the outer side of the port – which can NOT be changed much (the corner seal needs that area) without going to a bridge port.
We are not going to get into the various pluses and minuses of the different ports here – way too much could be written on them, so we may get into that at a later time, in another section.
Porting is very time consuming, but the more you do, the faster it gets. There are definite techniques involved, that only practice will develop. This section is mainly to just help the “new to porting” by showing the tools that we consider needed, and some of the steps of the process.
Click here to go to the page showing our excellent PORTING and REBUILD DVD’s
Porting Templates are available here
Tools | |
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USE EYE AND EAR PROTECTION !!!! No joking around – the metal burrs thrown out are one of the most dangerous things around for the eyes. If you are using air, the ear protection should also be worn. | |
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