yeah, you're prolly right.

I still wait for the day I find a spare propane tank somewhere and tap it for air. something like a 120g reservoir would be piiiimp.

 

I hated the hf air grinder but it was cheap

 

http://www.diyporting.com/

I'm getting into diy porting too. I have a spare dpfi IM that I'm practicing on when I'm bored at work. I'll post some pics of my work that I did when I get a chance.

edit*

Here are some very good articles I just stumbled on.
http://www.club240.com/forums/showthread.php?t=39204
http://www.sa-motorsports.com/diyport.aspx

 

I get my flowbench in 2 weeks

 

I paid around $36 a couple years ago for somwehere between 5 and 7 double cut carbide burrs of various shapes on Ebay. They have treated me very well. I've ported heads, rotor housings, turbo manifolds, turbine housings, intake manifolds.....you name it. They aren't as sharp as they used to be but I've gotten well more than my moneys worth.
I use a die grinder and then finish things up with one of several dremels I have on tap. Flapper wheels work well for the finishing touches.

 

thats really cheap. My cutter I use for most of my stuff was almost 80 bucks but is has sharp has it was day 1 and cuts like a ****

 

www.carbidebur.com good price, huge selection.
Erich