srcarr52
We can't stop here, this is bat country.
Round the bottom edge of the transfers.
You can still skinny the exhaust dividers a bit and angle them back, you can also go wider on the outside two.
Porting a Poulan 25da
- Thread starter NPKenny
- Start date
Help Support Arborist Forum:
Round the bottom edge of the transfers.
You can still skinny the exhaust dividers a bit and angle them back, you can also go wider on the outside two.
Any progress today?????
Mastermind
Work Saw Specialist
I ate bacon. :msp_wink:
No... I didn't get in until 1am. It's been 15-18 hour days this week so it's been slow. Hopefully I can finish the porting tonight and start reassembly. I'm looking for my rings to come in early next week. I ought to be ready to carve the turkey with it.
Ported!!
Here is the finished exhaust port and transfers.
Final numbers are:
Exhaust = 103*
Transfers = 120*
Squish = .022"
Exhaust ports. Thinned bridges and dramatically widened. Raised from 111* to 103*. I can't say enough about cutting the squish band.
Transfers (pics aren't the best here). From 125* to 120*. I spent a lot of time matching the port height and width from side to side.
This is the original muffler port with locating tabs hanging way inside the port... Probably the most restrictive part of the saw.
And here is the port matched muffler. It is matched better than the pics look here.
I'm excited to see how this little saw runs. I really think removing the base gasket (original squish of .052" with .030" gasket), port matching the muffler, and removing at least one of the muffler screens would make a huge improvement on any of these saws. Advancing timing might be pretty helpful as well.
Next step is reassembly with my son and waiting on parts (maybe Saturday). This saw has been an exceptionally enjoyable one. I really can't get over the build quality and bang for the buck with these saws.
Here is the finished exhaust port and transfers.
Final numbers are:
Exhaust = 103*
Transfers = 120*
Squish = .022"
Exhaust ports. Thinned bridges and dramatically widened. Raised from 111* to 103*. I can't say enough about cutting the squish band.
Transfers (pics aren't the best here). From 125* to 120*. I spent a lot of time matching the port height and width from side to side.
This is the original muffler port with locating tabs hanging way inside the port... Probably the most restrictive part of the saw.
And here is the port matched muffler. It is matched better than the pics look here.
I'm excited to see how this little saw runs. I really think removing the base gasket (original squish of .052" with .030" gasket), port matching the muffler, and removing at least one of the muffler screens would make a huge improvement on any of these saws. Advancing timing might be pretty helpful as well.
Next step is reassembly with my son and waiting on parts (maybe Saturday). This saw has been an exceptionally enjoyable one. I really can't get over the build quality and bang for the buck with these saws.
The suspense is really killing me on this one!!!:msp_scared:
I bet if this little tomato slicer rips like I think it will, Ebay prices will rise!!....Sure glad I already have a stash of my own.:msp_biggrin:
Nice work!!
I bet if this little tomato slicer rips like I think it will, Ebay prices will rise!!....Sure glad I already have a stash of my own.:msp_biggrin:
Nice work!!
I was just thinking of that... I picked up this little guy for $20 locally, including a few quarts of bar oil and a 2.5 gallon fuel jug.
Mastermind
Work Saw Specialist
Very nice work!
old 040
Addicted to ArboristSite
i had cinnamon rolls
, looks like great work on the saw, can't wait to see it finished
Mastermind
Work Saw Specialist
i had cinnamon rolls
You poor man.
old 040
Addicted to ArboristSite
+1
They're frequently on CL in my area mega-cheap and I'm always tempted to get "just a couple more for parts".
Guess I'd better, huh? And pull the base gaskets on my other ones.
You poor man.
No mayo?
rms61moparman
Addicted to ArboristSite
We have a sandwich like that here in Kentucky!
It is named after some of our native dancers.
They call it the "Clogger"!!!
Mike
srcarr52
We can't stop here, this is bat country.
Good looking port work!
Mastermind
Work Saw Specialist
sure you don't want that in the form of a pie!!
Bacon pie......Mmmmmmmmm :msp_thumbup:
ChainsawmanXX
Addicted to ArboristSite
You guys are makin me hungry....
Looks like its time for my soy bacon!
(Kiddin, that stuff is an insult to america)
Awaiting a video!
Sent from my LS670 using Tapatalk 2
Looks like its time for my soy bacon!
(Kiddin, that stuff is an insult to america)
Awaiting a video!
Sent from my LS670 using Tapatalk 2
old 040
Addicted to ArboristSite
Bacon pie......Mmmmmmmmm :msp_thumbup:
your quite a chef as well!, tearing down saws and baking pies at the same time, you really are gifted!
Last edited:
You and me both. Once the rings show up, we're in business. I got all of the loose ends I could buttoned up today awaiting reassembly.
It runs!
The rings made it!!! They are 38mm Caber rings with that are notched for a pin. I matched them in opposition to help the seal.
I used the venerable Yamabond 4 for the base. After getting it all back together, I may need to make a very thin base gasket as it is right on the edge of free-porting the bottom of the exhaust.
I had to elongate the mounting holes in the coil. The coil is mounted to the cylinder, so dropping the base took all of the adjustment out of the coil.
Here is the saw all buttoned up after using the Granberg to file back about $10 worth of Stihl semi-chisel chain that came with the saw and the hard-nose bar.
Cold compression is 190 psi at 3,600ft. elevation.
I'm heading out to the woodlot in the AM to tune it in and grab some video. We'll see how the 200T takes it.
The rings made it!!! They are 38mm Caber rings with that are notched for a pin. I matched them in opposition to help the seal.
I used the venerable Yamabond 4 for the base. After getting it all back together, I may need to make a very thin base gasket as it is right on the edge of free-porting the bottom of the exhaust.
I had to elongate the mounting holes in the coil. The coil is mounted to the cylinder, so dropping the base took all of the adjustment out of the coil.
Here is the saw all buttoned up after using the Granberg to file back about $10 worth of Stihl semi-chisel chain that came with the saw and the hard-nose bar.
Cold compression is 190 psi at 3,600ft. elevation.
I'm heading out to the woodlot in the AM to tune it in and grab some video. We'll see how the 200T takes it.
