How to mod exhausts?

[adamkaye123]

Relatively new to all this as you may have read other posts from mine I've only just started playing about with saws as I've started buying my own so the boss won't kill me!

I keep hearing about exhaust mods but can't find pictures or how to do it??

I have tried searching but the search facility on the arbtalk app leaves a bit to be desired.... Either that or I'm terrible using it! But thanks anyway!

[wisecobandit]

Have a look in "whats on your bench" or "spuds tuning/modifying" thread in the chainsaw section.

We all tend to have our own little ways of doing it. What saw have you got?

Also do a search for "muffler mods"

[Eddy_t]

There are 101 ways to mod a muffler, each modder likes a different method, but generally it's creating more airflow from the saw, these can be in the form of pipes, holes, slits or a hole with a deflector. It depends on the saw to what looks best

 

 

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[Stubby]

Relatively new to all this as you may have read other posts from mine I've only just started playing about with saws as I've started buying my own so the boss won't kill me!

I keep hearing about exhaust mods but can't find pictures or how to do it??

I have tried searching but the search facility on the arbtalk app leaves a bit to be desired.... Either that or I'm terrible using it! But thanks anyway!

 

Here is a version I favor

[wisecobandit]

Here is a version I favor

 

Me to. Got that set up on all my big huskys.

[adamkaye123]

Here is a version I favor

 

 

Is that just drilling out two more holes and welding those pipes on?

[Eddy_t]

Pretty much, there are other ways too

 

 

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[Stubby]

Is that just drilling out two more holes and welding those pipes on?

 

Little bit of judicious baffle removal also . There is a supposed optimum outlet area increase expressed as a percentage but can't remember what it is just now but about what you see on my 390 there . You could start by just removing the spark screen if you have one ....

[wyk]

Little bit of judicious baffle removal also . There is a supposed optimum outlet area increase expressed as a percentage but can't remember what it is just now but about what you see on my 390 there . You could start by just removing the spark screen if you have one ....

 

The 'optimum size' has more to do with noise in regards to gain. In most chainsaws, you can make huge holes in the muffler and still see gains. However, huge holes often mean huge noise. So when they usually talk size, it's more about balance than ultimate gains.

[Eddy_t]

Little bit of judicious baffle removal also . There is a supposed optimum outlet area increase expressed as a percentage but can't remember what it is just now but about what you see on my 390 there . You could start by just removing the spark screen if you have one ....

 

 

75-80% depending on what you read

I just add more holes to the baffle plate rather than remove, often they're structurally integral

 

 

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