isaaccarlson
Super OPE Member
- Local time
- 7:37 AM
- User ID
- 1185
- Joined
- Apr 22, 2016
- Messages
- 361
- Reaction score
- 798
- Location
- Colfax, WI
It’s been a while since I’ve been on here. The last few years have been crazy, but I’m getting back into saws a bit. A few of you might know about the 350 I built for a friend a couple years back, and fell in love with. I asked him if he would sell it back to me and he said “no way, it’s the best running saw I have, but you can use it here whenever you want”. Well, a guy has to have something he loves. I picked up a 350 for myself this spring, and am in the process of working it over. It’s an older model(1999), but it seems pretty solid.
This one was put together with silicone, just like the last one, so at least I knew what to expect when tearing it down. This is a work saw, since I do a few tree removals and cut firewood. I have a 45 mm cylinder (with removable transfer caps) along with a hyway 353 flat top piston. I really, really like this piston because of the way it can be modded for better transfer flow. I used the same piston on the last build, and it turned out great. I could really lean on the saw and it would just keep cutting.
I’m seriously considering stuffing the lower/mid transfers(something I didn’t do on the last build). There are some steps in there that make a good bit of turbulence, and I want to get the case volume back down after removing so much material from the piston.
The base gasket has been removed and the base has been surfaced flat on both sides, bringing the squish down to ~.020. No popup. The exhaust will be ~65% of bore(straight line measurement), as will the intake. Port timing will likely be close to stock. I like to keep a long power stroke, good blowdown, and a short, strong intake surge to pack the case. This provides plenty of torque to keep the chain moving. I’m a “straight six” truck guy, so I have an appreciation for good torque. I have no problem filing rakers.
The muffler will be modded, opening up the entire area under the deflector and a bit of massaging the deflector plate. That’s plenty. The mufflers are already open inside, so there is no need to cut them open.
I believe this saw has an unlimited coil, being a 1999 model. I don’t know what the timing is just yet, but I will find out and advance it if I think it’s needed.
The oiler will get modded, since they are pretty weak from the factory, and a working chain needs a lot of oil.
Compression release? What’s that?
I don’t have any pictures just yet, so hold tight, they are coming.
This one was put together with silicone, just like the last one, so at least I knew what to expect when tearing it down. This is a work saw, since I do a few tree removals and cut firewood. I have a 45 mm cylinder (with removable transfer caps) along with a hyway 353 flat top piston. I really, really like this piston because of the way it can be modded for better transfer flow. I used the same piston on the last build, and it turned out great. I could really lean on the saw and it would just keep cutting.
I’m seriously considering stuffing the lower/mid transfers(something I didn’t do on the last build). There are some steps in there that make a good bit of turbulence, and I want to get the case volume back down after removing so much material from the piston.
The base gasket has been removed and the base has been surfaced flat on both sides, bringing the squish down to ~.020. No popup. The exhaust will be ~65% of bore(straight line measurement), as will the intake. Port timing will likely be close to stock. I like to keep a long power stroke, good blowdown, and a short, strong intake surge to pack the case. This provides plenty of torque to keep the chain moving. I’m a “straight six” truck guy, so I have an appreciation for good torque. I have no problem filing rakers.
The muffler will be modded, opening up the entire area under the deflector and a bit of massaging the deflector plate. That’s plenty. The mufflers are already open inside, so there is no need to cut them open.
I believe this saw has an unlimited coil, being a 1999 model. I don’t know what the timing is just yet, but I will find out and advance it if I think it’s needed.
The oiler will get modded, since they are pretty weak from the factory, and a working chain needs a lot of oil.
Compression release? What’s that?
I don’t have any pictures just yet, so hold tight, they are coming.