Porting a husky 350

Hello all, I have a husky 350 and I'm looking to tune the saw up a bit. I have a bran new cylinder and would like to port it. The cylinder is a Chinese cylinder so I hope I have no issues. I was hoping someone could save my photos and draw on them the contour and how much I should open up the intake, transfer, and exhaust ports. Also, what other mods should I do? I have a 359 carb, intake, and air filter I was planning on installing as well. I also plan to do the famous muffler mod. Thank you very much for any advice or help given to me.

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I’ve considered putting a HD199 carb on a 50cc saw before but never pieced them together. Interesting.
Is the existing p/c toasted?

 

The old cylinder could be used, I'm not sure if it's an oem cylinder or not. The price was right for the new cylinder and matching piston on ebay, that's why I went that route. I have already replaced the crank bearings and seals with oem, the rod bearing on the crank feels good. I've seen pictures of oem 350 cylinders and most of them look like they have removable transfer covers? My old cylinder doesn't, neither does my new one.

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I’ve never ported a saw myself. I’ve watched a few YouTube videos on the topic, but’s that’s as a far I’ve gotten.

 

First thing I would recommend is to buy and learn how to set up a degree wheel. Porting has a lot to do with when ports open and close and the only way to do a full/proper port job is to apply certain numbers or degrees at which they open(intake/transfer/ex). You can widen a little with no ill effects, but you do not want to grind any port higher or lower without knowing exactly what degree your change will open or close at.

You have the earlier open port cylinder. Later models used the closed port cylinder design. I did one with the removable trans covers, which made it easy with a dremel and a good carbide cutter.

In this pic, you can see the marked lines to grind to. A ring is placed in the cylinder, cylinder put back on bottom end with piston down, then you turn the crank to a specific degree on the wheel and remove the cylinder and mark the line the ring was pushed to.


Here's a vid to show you set up (not mine). I couldn't teach it as I had a friend stop buy and went through it once with me and I don't remember the specifics. I don't have the right angle grinder to make porting easy so I haven't bothered to pursue the wheel.