Martinm210
ArboristSite Operative
Couple of updates.
I finished the piston/cylinder and 044>046 conversion.
The laundry list of work I ended up having to do to complete the modification was this:
That's it, and some of that may differ depending on the jug used/quality. The stuff like shaving the base edge and the transfer port bulge just barely needed any at all and I could see if the bore was machined out 1mm different, you may not need to do any of that. It'll take a little fitting and custom shaving, but overall it's a pretty easy mod to do. The worst part is splitting the case to shave, but if you were already in there to replace the bearings, it's no problem at all.
Anyhow, starting to reassemble the saw. Had to pull the oiler completely apart too to get at chewed up bits of an old plastic oiler gear.
It's all coming together now, just need to port the muffler and get one last order of parts in.
I also need to pull apart the carb and put in the rebuild kit, but here is a little mockup setting the air cleaner cover on for a little perspective.
I did end up finding a used Big clutch cover on ebay and sandblasted it bare and repainted it as well. The sandblaster is really coming in handy, even the plastic parts it does a nice job of roughening the surface for good paint adhesion.
Getting there..:greenchainsaw:
I finished the piston/cylinder and 044>046 conversion.
The laundry list of work I ended up having to do to complete the modification was this:
- Slotting of the cylinder jug holes as noted previously
- Shaving of the case to allow the piston to sit down in the case
- Shaving the clutch side of the jug base (the bottom 1cm of the base was just a touch too wide on one side and needed sanding about .5mm
- Shaving of the clutch side of the jug at the transfer port bulge (the bulged out area of the just that follows the transfer port was pushing hard against the case, so just about a .5mm shave with the dremel did the trick.)
- Shaving of the top cover to clear the taller/wider jug as previously noted
- Adding washers or spacers to the mufller bottom screw locations. (the bottom two screws no longer sit against the case because of the increased jug size. A few M6 sized washers should do the trick for this or spacers.
That's it, and some of that may differ depending on the jug used/quality. The stuff like shaving the base edge and the transfer port bulge just barely needed any at all and I could see if the bore was machined out 1mm different, you may not need to do any of that. It'll take a little fitting and custom shaving, but overall it's a pretty easy mod to do. The worst part is splitting the case to shave, but if you were already in there to replace the bearings, it's no problem at all.
Anyhow, starting to reassemble the saw. Had to pull the oiler completely apart too to get at chewed up bits of an old plastic oiler gear.
It's all coming together now, just need to port the muffler and get one last order of parts in.
I also need to pull apart the carb and put in the rebuild kit, but here is a little mockup setting the air cleaner cover on for a little perspective.
I did end up finding a used Big clutch cover on ebay and sandblasted it bare and repainted it as well. The sandblaster is really coming in handy, even the plastic parts it does a nice job of roughening the surface for good paint adhesion.
Getting there..:greenchainsaw: