My Muffler mod on MS 260

[Redhorse]

My muffler broke around the outer bolts so had to get a new one and mod it.
Here is a pic of the old one and new one pre mod. I am just a hack so they aren't pretty

Here is after my mod to the new one

The paint is still drying!

The old one close up

Sent from my iPhone using Tapatalk

 

[Redhorse]

The old one I took a 3/8 drill bit and made 3 holes the 2 new ones twisted as they went through deforming the holes.

The new one I couldn't find my drill bits so used the dremel I now have and cut the hole.

There doesn't seem to be many pics of mods for new people to see on here or I can't find them. Figured I would put mine up since I had to redo it.


Sent from my iPhone using Tapatalk

 

[Dub11]

Could this be helpful? http://opeforum.com/threads/show-off-your-muffler-mods.6898/

 

[Redhorse]

Could this be helpful? http://opeforum.com/threads/show-off-your-muffler-mods.6898/

Yeah that's helpful but there are 57 pages to look through to find what your looking for and may not have a lot of instruction in how to do it. Some of those look really awesome!


Sent from my iPad using Tapatalk

 

[Dub11]

I have a 026 with an extra port on the muff. I'll snap a pic in the morning for ya and an extra deflector I can send you too.

 

[Wonkydonkey]

I did a real rough m-mod on my 260, and cos it was so rough I got a new f-tec but I've still to get round to doing the new one. I was contemplating another hole and a deflector, like red97's ones.

 

[Dub11]

This is off my MOFO 026. So I want to guess I have a large welded on there But a small one could probably be trimmed and bolted down. And those are @Red97 deflectors. A large and medium.

 

[Backtroller]

I cut a little more open in the front

 

[Backtroller]

Need to give some credit. Old style @Red97 deflector. Attempted to copy @drf256 style for the Mofo he ported for me.

 

[drf256]

View attachment 98151 View attachment 98150 View attachment 98149 View attachment 98152 This is off my MOFO 026. So I want to guess I have a large welded on there But a small one could probably be trimmed and bolted down. And those are @Red97 deflectors. A large and medium.

That’s a version 1 medium. Coming out the front makes them NOISEY. It also sprays crap towards the R hand case.

I’m happy to see that saw full of sawdust Wayne.

 

[Dub11]

That’s a version 1 medium. Coming out the front makes them NOISEY. It also sprays crap towards the R hand case.

I’m happy to see that saw full of sawdust Wayne.

It's my go too! And thanks for chiming in.

 

[drf256]

It's my go too!

 

[Redhorse]

How big should you go on a non-ported saw?


Sent from my iPad using Tapatalk

 

[Redhorse]

I read a thread on AS where the author had done some extensive tests on a 260 and how much to open up the muffler when modding. IIRC the best gains were at around 80% of exhaust port. Which I think he said was around 3 3/8ths holes.


Sent from my iPad using Tapatalk

 

[Adirondackstihl]

I read a thread on AS where the author had done some extensive tests on a 260 and how much to open up the muffler when modding. IIRC the best gains were at around 80% of exhaust port. Which I think he said was around 3 3/8ths holes.


Sent from my iPad using Tapatalk

Less drag on one large single port vs smaller multiple ports.
I’d rather have one and done

 

[Redhorse]

Less drag on one large single port vs smaller multiple ports.
I’d rather have one and done

IIRC the 3 3/8ths was the amount to open up I tried to open it up about the same but as one big area. The tune was not far off if any when I got the new one on.


Sent from my iPhone using Tapatalk

 

[drf256]

I think you’ll be fine with what you did.

You could open square and just move the screen retention screw hole towards the PTO side of the cover. Then slide a coarser piece of screen in.

For a non-ported saw, I think you’re ok with what you’ve done already though.

 

[Redhorse]

I think you’ll be fine with what you did.

You could open square and just move the screen retention screw hole towards the PTO side of the cover. Then slide a coarser piece of screen in.

For a non-ported saw, I think you’re ok with what you’ve done already though.

Thanks for the info, I appreciate it!


Sent from my iPad using Tapatalk