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Stihl 021-025/MS210-MS250 Muffler Mod

Discussion in 'Chainsaws and Power Equipment' started by MasterMech, Jan 15, 2015.

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  1. clemsonfor

    clemsonfor

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    Two strokes don't need back prussure like a four stroke. You can run one without a muffler period as long as it's tuned right enough
     
    clemsonfor, Feb 15, 2016
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  2. MasterMech

    MasterMech The Mechanical Moderator

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    The whole back pressure thing is mostly a myth. It's all about flow.

    The 021/023/025 series of saws is one that runs great with the exhaust as unrestricted as possible.
     
    MasterMech, Feb 15, 2016
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  3. Bradma74

    Bradma74

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    Awesome too know. Thanx again for the info. I was hoping that was right I cut and removed the baffle from my 041 farmboss and tuned it and that really helped that ol saw too
     
    Bradma74, Feb 15, 2016
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  4. clemsonfor

    clemsonfor

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    Grind out the exit port on the muffler and it will help a WHOLE lot more
     
    clemsonfor, Feb 15, 2016
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  5. Bradma74

    Bradma74

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    I will. Thanx for that too
     
    Bradma74, Feb 15, 2016
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  6. Bradma74

    Bradma74

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    I forgot but on my 41 I cut it in half pulled the baffle and welded a 3/4 in piece of 1-1/2 thin wall pipe in the muffler at an angle and that really did help it too
     
    Bradma74, Feb 15, 2016
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  7. clemsonfor

    clemsonfor

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    Nice
     
    clemsonfor, Feb 15, 2016
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