Echo CS-450 muffler weighs a ton! Pics of its internals?

[banditt007]

I want to mod the muffler on this thing and want to know if its worth my effort to cut the entire thing open, or should I just drill a few holes in it as it sits now? Any pics or advice on this muffler i would greatly appreciate. I'd really like to remove whatever is in it that weighs so much-it weighs a ton! I want best performance + weight reduction.

What are your thoughts on keeping the side exit exhaust vs blocking that off and welding on a front mounted exit? I was thinking two small front ports-only bc it'd be cool and fun to run

Also what is the best way to open it up that allows you to weld it back up with minimal hassle? I was thinking a thin hacksaw blade and was going to reweld it back up w/ a harbor freight 90amp flux core wire welder? I think even a thin cutoff blade would remove too much material vs a hacksaw. I do not have a band saw at this time.

PS if anyone has a used muffler for this saw for sale or knows of another one that bolts up to it LMK i'd be interested in purchasing it.. thanks.

 

[bthompson224]

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[altair]

Bought a newish Echo CS-310 a while back, that muffler was heavy and packed full of catalytic crap.

Drilled it out, and opened up the muffler outlet , and it made a big difference, made the saw snappier and more responsive. Had to retune a little but well worth it, even on a 30cc saw. Would run a lot cooler I reckon too. I'm picking the muffler on yours would be pretty similar.

 

[rmh3481]

Check this thread;
http://www.arboristsite.com/chainsaw/129928.htm

 

[bthompson224]

The 450 is different, it has an offset cat. I would also like to see pics of a mod in progress.

 

[o8f150]

to do it right you will need to open it up because of the way it is made,, lets rephrase that,, the easiest way is to open it up

 

[banditt007]

Thanks for the responses so far guys-Yes this offset cat is a problem. Its either drill holes (and keep the cat in there just bypassing it some) or cut it open... any thoughts on hacksaw vs cut off wheel? If i do, do this I'll try to document with pics..It will be a fun little project, i just want to do it on a spare muffler so i can take my time and still have a working saw-any sources for used mufflers for this saw?