I will never be considered a master saw builder. I do good to just put a stock saw back together with all the parts in the right place. Years ago, I used to fool with race engines for dirt track cars. I didnt have the money to pour into a real race engine, so I had to make do with what I could find in the junk yards. One thing I did learn to get real performance was that to get power out, you had to get air in. Any air that flows in, has got to flow out. Head porting has always been the cheapest way to get gains. Once the air flows, then you start experimenting with fuel and compression. Then valve and ignition timing. Chainsaws rely on port timing instead of valves and camshafts. Chainsaws dont have distributors you can just turn a little bit to advance or retard timing. The principle should still be the same. Raising and lowering or wideing ports is like changeing overlap with lobe centers on a cam. Need the ports to stay open longer, get a cam with a bigger bump, or for a chainsaw, open up the transfers. What ever it takes to get the fuel mix in the cylinder. Instead of turning the distributor for ignition, on a chainsaw, you got to change the location of the flywheel, I personally dont think you can read a book and automaticly know what to do or how much is to much. It would take a lot of experimenting to find the right combinations of port size, timing and ignition to get the maximum gains possible. This would only come from doing lots of saws and lots of testing. For someone to go on a forum and admit they have never ported a saw and then start telling me how I should port a saw, or that they know a better way and can do a better job than someone that has been porting saws for years, well its almost laughable. I have read probably every thread on porting saws on this forum and several others. I have also done a lot of Google research on the subject. I now feel qualified to start my own thread on porting saws. You should all pay attention to what I have to say. Nobody can port a saw like I can, Move over Brad and Randy, and I apologise in advance for taking away all your potential customers. I know when I tell everybody the bast way to build a saw, no one will ever read your threads again.
I hope everyone can see the sarcasim I am expressing. I am just upset that a thread about porting saws, and has grown to 47 pages, doesnt have one bit of usefull information.
