I had my 395 set pretty fat. Running a 36" bar with an 8 pin I had to be cutting a really full saw buck for it to clear up. I'd like to get a tach after I get it rebuilt so I can be a little more scientific about the tune.
I got a tach just to see where my tunes were. I found out I was pretty conservative after taching a saw.
I can't wait for the muffler to get here so I can run it again. I am no mechanic but when I pulled the old muffler there were some burs in the cylinder from the studs when the tree smashed which caused the exhaust to blow past the gasket. So I took a file to the face of the exhaust port to knock the burs down and was surprised to see how many high and low spots it had. The new muffler is a nwp from baileys. Has anyone used an aftermarket muffler before. Does anyone think it should change to tune of the saw. As far as tuning the carb I mean.
Hard to say, usually Chinese mufflers are slightly different than oem. Whether it's port sizes, internal baffle layout (in some cases no internal baffles), different specs for spark arrestor screen mesh, etc. It should be pretty close but you won't know until you fire it up.
I used a hyway on a 395 if I remember right. It was fine for a stock saw. The tune will have to be checked with the new muffler.
Im running a Hyway on the 460. I was pleasantly surprised by the quality and loved the larger outlet hole and no baffle. The paint blistered after a few tanks, but it can be repainted w stove paint. Id recommend them as a cheap alternative to OEM.
good to here that there not all that bad. for no more than what I have in the saw I didn't want to sink 100@ into a muffler. I would rather put the money saved toward chains and feul
You should be fine. The 394 muffler is a box. I had issues with my hyway 064 mufflers. Both had the guarding from the front cover vibrate off. The spot welds didn't hold. But 394 shouldn't be an issue.
I got home last night and the new muffler was waiting by the door. I installed the new muffler and started it up. Started like it did before. Sounded pretty good. I will cut with it tonight.
Not really happy with the muffler. Saw did not have as much power than before. I took a chisel and a hammer and knocked the pipe inside the muffler away from the exhaust opening on the side of the muffler. This did not make much difference. I for some reason can't get a saw shop to check the tune on carb because of the muffler. The saw starts and idles fine but it only dumps the chips at your feet instead of throwing them 10ft out the back. Any suggestions or thoughts on this would be appreciated.
What's your H screw set at? Factory spec is 3/4 out. Wj39 will feed a lot of fuel from the L side. Sometimes enough the H can be closed.
