359 Muffler Mod How -To's?

[Greebe]

I am reposting this since it appears to have been lost when the site was down.

I tried searching the forum for muffler mods on a 359, but keep getting this, "connection to localhost:9312 failed (errno=111, msg=Connection refused)". So I am asking here for advise.

I have a Husqvarna 359 that I bought back in 2006, and it has been a good saw. However the cat muffler has always concerned me and I have been careful not to overheat the saw with it. I would like to gut this muffler and do the muffler mod on it. Not sure what I need to do to it and what size to make the new pipes coming out of it.

The other thing I really am not sure of is how to re-tune the carb. Seems like I remember that you need to clip of the limiters and adjust them further than it is set up?

Any help would be appreciated.

Thanks,
Greebe

 

[MarkEagleUSA]

I tried searching the forum for muffler mods on a 359, but keep getting this, "connection to localhost:9312 failed (errno=111, msg=Connection refused)".

Was that before the site went down or now on the new site? I've just done a couple of searches and it seems to be working fine.

 

[Mike from Maine]

 

[Big_Wood]

Wholey man mike. You must be near 130%with the stock opening still there. Or did you close it up?

 

[Mike from Maine]

Unless my methodology/math is way off it's about 80%. I went so far as to trace the port opening and scan it so I could use sketch up to calculate the opening size. I also scanned in a tracing of the pipe so I could design and print out a template the correct size that would fit under the pipe.

What can I say, I was bored.

 

[Big_Wood]

Unless my methodology/math is way off it's about 80%. I went so far as to trace the port opening and scan it so I could use sketch up to calculate the opening size. I also scanned in a tracing of the pipe so I could design and print out a template the correct size that would fit under the pipe.

What can I say, I was bored.

Maybe that pipe just looks massive in picture.

 

[Homelite410]

That looks nice mike. How is the silver braze working for you?

I run this on my 350 with 359 p&c in it. 1" ss pipe it loves it and WOW does it clean off the log as you cut.

 

[Homelite410]

Unless my methodology/math is way off it's about 80%. I went so far as to trace the port opening and scan it so I could use sketch up to calculate the opening size. I also scanned in a tracing of the pipe so I could design and print out a template the correct size that would fit under the pipe.

What can I say, I was bored.

Hey mike, your work and theory is great but you need to measure the port opening at the cylinder wall to be most accurate.

As far as calculations go......... I measured my first one and just put what I felt like in the others. So far, I have had good luck.