Husqvarna 455 muffler...

[weimedog]

The outlet of this muffler is around 1/4 of the exaust port cross sectional area..if even that. Also it looks like the engineers went out of their way to make the "internal" structure symetric. I wonder with the complex flow patterns of these x-torq motors, that symetry is more important than with conventional two strokes.

SO I'm thinking of adding two 1/2 diameter "pipes" towards the top of the front side..just above the two mounting screws; and have then exit straight out to the front and have them placed where they are also symetric to the internals of this muffler.....

Any idea's?

(I was origionally going to stuff a 3/4 inch tube in the corner as I've seen so many do..untill I started looking caerfully at the internals.)

 

[funky sawman]

Exxaust porting STRATO saws never gained them any performance in my experience, It just made them louder. The saws I have exhaust ported and tried are the 441 stihl and 455 husky.

 

[funky sawman]

Exhaust porting STRATO saws never gained them any performance in my experience, It just made them louder. The saws I have exhaust ported and tried are the 441 stihl and 455 husky.