[quote name='rotarygod' date='Aug 23 2005, 06:07 PM']Grinding away metal on a housing easy. Getting the right shape, runner transition, and finish is the hard part. Templates only show you what size to open them up to. A template can't show how to do the real work that actually makes the most difference. It is possible to make a port larger and have it flow worse.



You will need a die grinder with some fairly expensive bits to do a nice cut. These generally aren't available at the hardware store. I've got some nice carbids and non ferrous bits that I use for various things. I only use a Dremel to go back and do finish work. It is possible to port an engine with only a dremel but it is also possible to cross the Atlantic in a rowboat. It's slow and difficult.


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Nice analogy.

 

It is easy to port a motor, its not easy to make the ports make power.