Nutball
Active member
Any ignition timing advance? How well does your air filter flow? How open is your muffler?
Ported Saws... Lets see your work fellas
- Thread starter BigSachsDolmar
- Start date
jasent
Well-known member
No timing advance. Air cleaner is good and muffler is 75% She’s got tons of torque running 36” full comp full chisel. Tossed an 8 pin on it today to see how I like that.
Nutball
Active member
Finally got around to starting on my 395 cylinder, still a ways to go.
jasent
Well-known member
Got the issue with the 660 figured out. Base gasket was leaking. I remember when I was doing the initial tune I kept having to give it more low as I was working the saw. Opposite the norm. Ended up at 3.5 turns out on the low 
Low was giving it so much fuel the high couldn’t go lean enough till it sucked air
Fixed that all up and re-tuned. Wow way different lol and she likes the 8 pin and 36” and peak is right where I like it. I’ll try to get some video of it today.
Low was giving it so much fuel the high couldn’t go lean enough till it sucked air
Fixed that all up and re-tuned. Wow way different lol and she likes the 8 pin and 36” and peak is right where I like it. I’ll try to get some video of it today.
jasent
Well-known member
Iroczu
Member
That is one heck of a saw, well done, what did you do to it anyway, or what did you do that had the most impact
on performance.
I'm not sure, I'd share the numbers I used but I had some help with them and they arn't mine to share.
Fabz
Active member
huskihl
Member
Nutball
Active member
Ported 352 34cc. I went back to the smaller carb as I needed it for work today, and have to figure out the fuel line kink issue with the big carb. It likes cutting around 9-10,000rpm
View attachment Ported 352 #2.mp4
View attachment Ported 352 #2.mp4
Last edited:
Nutball
Active member
What is seen here: https://chainsawforum.com/threads/ported-saws-lets-see-your-work-fellas.43/post-1343
The port timing I used with the intention of lowering the cylinder for more compression, but I wanted to see how it would perform like this first. It runs well, but I think it would run much stronger with the cylinder lowered, but that will be a lot of work on this kind of engine when I get around to it.
The port timing I used with the intention of lowering the cylinder for more compression, but I wanted to see how it would perform like this first. It runs well, but I think it would run much stronger with the cylinder lowered, but that will be a lot of work on this kind of engine when I get around to it.
Nutball
Active member
Finally got around to working more on the 395xp. Here, I'm working on making a nylon rod the right size to fit in the cylinder so I can cut the base. Nylon likes to make one continuous string, and stopping and starting the cut can cause the string to not leave the cutter properly, so I experimented with using a razor blade to make a cut down the rod to break the string every turn. It seems to work for the most part.
View attachment Turning Nylon Mandrel with chip breaker notch.mp4
View attachment Turning Nylon Mandrel with chip breaker notch.mp4
BigSachsDolmar
Member
Its got some top end no doubt. But how is the tq? Would it rip thru that if it was oak or elm or some hardwood that isn't punky like that pine.. I'm guessing it would do much better than I imagine