On the-45-62cc Chinese saws I ported adding a larger carb and intake did way more than porting as the stock intake was tiny.
No 2 saws have the same issues porting wise, you need to find out what your saw model needs ported/modded before porting it. A lot of times opening up the intake/exhaust and making them nice and smooth does next to nothing as it's the transfers holding the saw back. The quick easy gains are from ditching the base gasket and opening up the muffler on most all saws, there's a reason most guys stop there.
On the plus side between forums and youtube you can useally find someone who has ported a saw just like what your looking to port.
I totally copied someone else's work when I ported my Chinese saws. The last one I did works the best and I did the least work to it, my joncutter 5800, I posted about only adding the carb/intake to it which made a huge difference but have since ported it, which took me an hour total.
I didn't grind much at all, I opened up the lower transfers, knife edging the divider, widened the exhaust then I took the thickness of the base gasket off the top of the exhaust port and the piston by the transfers as I cant grind the top of the transfers worth a dam with my Dremel, I never touched the intake port as porting it doesn't help on that saw I also didn't shorten the pistons intake skirt. I ditched the base gasket so it has 20psi more compression, this helps just as much as the porting imo.
I could grind more making the intake and exhaust ports bigger/smoother but im at the limit of what the smallish transfers will flow so there's no point and no way to make the transfers better other than what I did. I've posted in threads about those Chinese saws that the 45 will rev the best if you want a screaming chinese saw as the small transfer ports, carb and intake hold the bigger ones back, I can swap the carb/intake but cant make a bigger cylinder so there's more room for the transfers lol.
Any Pics to illustrate the bait?
