Author Topic: Where to start a woods port?  (Read 3231 times)

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Offline man of stihl

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Re: Where to start a woods port?
« on: May 23, 2011, 06:11:09 pm »
I am very much a beginner also. But what i do when i have a saw opened up is i will put the piston into the cylinder (without the ring). Take a pencil, draw around the exhaust port. Take the piston back out and see where your lines are. That tells me how much i can grind out of the port. you need to stay away from the piston skirt edges about 2mm on each side. I make sure i champfer the port where i ground so i don't snag a ring. I don't do anything with the transfers but clean them up. I also tighten my squish by removing the base gasket. Then depending where my compression is i may take the gasket thickness off the roof of the exhaust and the same off the bottom of the intake. Then of coarse port matching the exhaust port and muffler. Than lastly a muff mod. This definitely wakes the saw up but i am by no means an expert. Just my 2 cents.
Ron

 

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