026 muffler mod?

[merc_man]

Am thinking of doing a muffler mod on my 026. Its already wide open with a small hole in front of muffler. Its little under 3/8" hole now. How big would you go. Wouldnt mind keepin it stock looking but if i gotta put a little pipe in it i will.

 

[Redfin]

As big as your ears will allow.

 

[merc_man]

Thats what i wanted to hear. Juat wanna make shure i have enough back pressure.

Also what ya think about advance the timng a little. 20 thow off key mabe.

 

[jmssaws]

The opening on this one is 1 1/2" wide and goes from top to bottom. It's a big opening

 

[merc_man]

The opening on this one is 1 1/2" wide and goes from top to bottom. It's a big opening

Is that 026 ported too or just the muffler mod

 

[merc_man]

 

[merc_man]

Think thats big enough?
I also angled the deflector more to help ot flow

 

[jmssaws]

Is that 026 ported too or just the muffler mod

It's ported.

 

[merc_man]

It's ported.

Figured that.

 

[T.Roller]

Before
After
This one turned out sounding nice lol

 

[jmssaws]

View attachment 25335 View attachment 25338

That's more like it. I went bigger and drilled the holes in the cover bigger

 

[merc_man]

Before View attachment 25335
After View attachment 25338
This one turned out sounding nice lol

Holy i better do some more grindng

 

[T.Roller]

That's more like it. I went bigger and drilled the holes in the cover bigger

I had done a couple 026's before and went a bit more conservative, I wanted more this time and got it. Along with shaving .020 off the flywheel key, deleting the base gasket, making a gasket out of .008 flashing to get the squish back to a safe number, the saw runs damn good.

 

[merc_man]

 

[merc_man]

Ther. It should breath now.

 

[T.Roller]

View attachment 25341

Oh yeah and its music to the ears!

 

[merc_man]

Might do the key now too.

 

[T.Roller]

@jmssaws knows much more than me about it but like I said I did .020 on mine

 

[jmssaws]

Depending on how it's going to be used and how much compression it has but anywhere from 010 to 030.
The saw in the video is advanced 030 but compression isnt super high.

020 should be fine.

 

[T.Roller]

Depending on how it's going to be used and how much compression it has but anywhere from 010 to 030.
The saw in the video is advanced 030 but compression isnt super high.

020 should be fine.

That is what I was told too, so I shot for the middle and was very pleased