Let's Start a Muff Mod Thread

[A.E. Metal Werx]

. Did the same thing on the 555. I have put a 562 p&c and stuffers,so it's a 560 now. Also flashed 562 tune into it,runs sweet.


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Looks like you did some good work there...


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[hoskvarna]

Ya u did


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[super3]

Not up to 410's caliber yet but, here is my latest 395 muffler.

 

[Ronaldo]

Not up to 410's caliber yet but, here is my latest 395 muffler.

View attachment 429078

Very nice! Any pics of it installed?

 

[big t double]

Blast from the past. I like Andy's (Lakeside53) solution to doing an MM and still having an effective unrestricted spark arrestor. Unfortunately most of the pics are gone. http://www.arboristsite.com/community/threads/lakeside53s-361-muffler-mod-w-photos.33528/

This was the first real muffler mod I did..I followed the pics in this thread...when you could still see it. I never knew the lakeside dude but he seemed real up on his sh!t...so props to him for this... I've posted this before but here goes again...

 

[super3]

Very nice! Any pics of it installed?

Not yet, saw is in line for a port job. I'll post another pic when finished.

 

[gomoto69]

I did this to my 298xp, haven't done any timed cuts or anything, but it seems to run well, but here's my issue now, i'm building an alaskan mill for this saw, and would like to use a silencer i have off a kx100. There's no way i can mount it now without blocking off one of these outlets, so here's the question, is the can necasary at all, or could i simply build a manifold and pipe straight off the exhaust port and into the silencer? Anybody tried this? I would like quieter for milling, and also to direct exhaust away instead of straight at the log. Not looking for big gains, just not a big loss. I guess just trying might be my best option. Any thoughts?

 

[Sty57]

The screen I use was recommended by Mastermind. 67% open. Stainless steel mesh from amazon. I don't think carbon would build up. I like using screens to prevent objects getting in.

Do you have a link for the screen?

Thanks, Brian

 

[BGE541]

So I guess my 180 amp MIG with .035" wire isn't going to work!

It can work just take your time, use that set up often...

 

[wde_1978]

This is my PS-7900 muffler mod:

It is nothing fancy like You guys do.
On the outside it intentionally looks stock , I only "opened it up" a fair bit without completely gutting the innards.

I:
- un-crimped the fold to get the two muffler halves apart
- drilled open the existing holes of the deflector and added a few more
- grinded open the "mouth" of the deflector a little more
- grinded open the existing outlet hole keeping the original outlet cover and maintaining the possibility to use the stock spark arrester screen
- re-assembled the muffler and re-crimped the fold


I am satisfied with the result.
My PS-7900 sounds really mean with this muffler mod and the noise frequency is highly addicting.

 

[BGE541]

So do they all just "uncrimp" like that... never tried, Thanks

 

[wde_1978]

So do they all just "uncrimp" like that... never tried, Thanks

My PS-6400 & PS-7900 are pre-CAT/SLR and thus have a muffler out of normal steel and can be un-crimped easy enough while COLD.

To my understanding CAT/SLR mufflers are made out of Stainless Steel and need be heated RED HOT for un- & re-crimping.

I have read some members just grind the muffler fold open and weld the halves back together afterwards , but that requires additional skills and tools (mostly for the welding part).

Some mufflers appear to be bolted together , but I might be wrong.

 

[Cope1024]

It can work just take your time, use that set up often...

A good 140 amp MIG will do the job.

 

[Sty57]

How are you guys doing a 361?
Are you uncrimping them and removing the baffles or just putting a second port?
Let's see some pictures please.

Thanks, Brian

 

[Sty57]

Here's my 2186

And 346xp

Thanks, Brian

 

[BGE541]

See posts #536-545 for the Echo saws

http://www.arboristsite.com/community/threads/15-echo-cs620pw-information.278407/page-27

 

[ANewSawyer]

My PS-6400 & PS-7900 are pre-CAT/SLR and thus have a muffler out of normal steel and can be un-crimped easy enough while COLD.

To my understanding CAT/SLR mufflers are made out of Stainless Steel and need be heated RED HOT for un- & re-crimping.

I have read some members just grind the muffler fold open and weld the halves back together afterwards , but that requires additional skills and tools (mostly for the welding part).

Some mufflers appear to be bolted together , but I might be wrong.

The two cat muffler I have worked on were very hard to open. I think map gas is required to get the crimp hot enough. I ground both of my muffler open with a angle grinder. One a friwnd welded back together. The second one, I am trying as a simple bolt together. I am watching it for the potential for exhaust to melt the housing. I haven't noticed a problem yet.

 

[bwalker]

Oh yes, hearing protection is a must.
However I feell that it was worth it.

Even double hearing protection won't fully protect you.
I say this as someone who has lost 90% of my low frequency hearing by age 38.

 

[bwalker]

The designs that expelled the exhaust forward suck IMO. You end up catching the bark on fire of certain trees like white and yellow birch. Plus the noise reverberates of the tree back at you.

 

[Sty57]

MS361

Thanks, Brian