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How many tanks of mix to break in engine 100%

Discussion in 'Chainsaw' started by OntheLevel, Nov 8, 2012.

  1. OntheLevel

    OntheLevel ArboristSite Operative

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    I've got a newer J'red 2153. Only 3 tanks of gas so far. Getting stronger with each on though.

    I wanna do a showdown between her and my ms261. (She's gone through about 100 tanks)

    How many tanks should I put through her before she's about 100%.. 5 or 10 or more???

    I am trying to make the competition as fair as possible.

    Thanks,

    Adam
     
  2. jus2fat

    jus2fat Two Harley Fatboys

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    About 20-25..IMHO..!! - But likely not much less than that..!!

    And don't run a saw completely out of gas...not a good thing..!!
    Likely why most modern saws have visible fuel levels...you're running 'lean'..!!
    :cheers:
    J2F
     
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  3. OntheLevel

    OntheLevel ArboristSite Operative

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    No I don't run out of gas. Every little while I just refill fuel and bar oil. 3 is just approx. Tomorrow she'll be running all day.

    I richened her up as much as possible til I figure how to trim these darn carb limiters.

    Thanks,
    Adam
     
  4. sunfish

    sunfish Fish Head

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    My newer 346 was not very impressive until it got over 11 tanks.

    20-25 tanks is a good break-in number.
     
  5. BloodOnTheIce

    BloodOnTheIce Account Hold

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    The Jonsered should be almost broken in and the MS261 will need atleast 5 more gallons of
    fuel through to be broken in.
     
  6. OntheLevel

    OntheLevel ArboristSite Operative

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    The J'red has only 3-4 tanks. It is getting stronger each tank. I was gonna do as sunfish suggested and get 25 tanks through the

    2153.


    The MS 261 has at least 100-125 tanks. Do you think that's not broken in yet?

    Adam
     
  7. sunfish

    sunfish Fish Head

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    Seriously, this 346 of mine was horrible at first, I was ready to get rid of it! But each tank it got noticeably stronger. 11 seemed to be the magic number, now it's a keeper!
     
  8. OntheLevel

    OntheLevel ArboristSite Operative

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    Yes sir. My 2153 got quite a bit stronger after only 3-4 tanks. But this first tank was sloooooow.

    If I had to bet I think it will be a little faster than my 261 once it's broken in. It'll be close though. I aslo think I do like the outboard

    clutch. It stays amazingly clean, cleans chips out great.

    Thanks,

    Adam
     
  9. sunfish

    sunfish Fish Head

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    Stumpy ran mine on the first tank and he just shook his head. It was not good!
    My old one was twice as fast in the cut, after 3-4 tanks they were almost even, after 10, the new one was faster. Then I ported the old one. :D

    Your 261 is broken-in. I'd run at least 20 tanks through the Jred, then do a shoot out.

    I much prefer the outboard clutch!!! :msp_biggrin:
     
  10. Dusty Rhodes

    Dusty Rhodes ArboristSite Operative

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    Are you guys serious? That many tanks of gas? I've only got about 4 tanks through my 346 and I felt it was very strong already. Certainly much stronger than the first tank. Guess I've never run a strong saw. I can not wait until I get that many tanks through her, as it seems to get stronger with each tank. I'll get a chance to run it in some oak this weekend. You've really got me excited now.
     
  11. sunfish

    sunfish Fish Head

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    Yep, serious! :msp_biggrin:
     
  12. blsnelling

    blsnelling Site Contributor

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    I was amazed with my 346 the first time I ran it. I did mod the muffler before ever using it though. On top of that, it was frozen wood that I broke it in on too. I wonder if it's manufacturing differences in piston/cylinder clearance?
     
  13. sunfish

    sunfish Fish Head

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    It very likely could be a difference from one saw to the next.

    I was very amazed first time I ran my old one 12 years ago. Not so with the new one?

    But like I said, the newer one is now a keeper! :msp_smile:
     
  14. Mastermind

    Mastermind Work Saw Specialist

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    I hardly ever get to run a full tank through a new saw.......they have to go home ya know. :laugh:
     
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  15. borat

    borat ArboristSite Operative

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    What's to break in on a chrome/nikasil bore saw?

    Both of my old Jreds came from the vendor and went to work on day one. Didn't notice any difference in performance when they were new and don't see any diffence now. They're almost 30 years old and still cutting like the day I bought them. However, day one was a long time ago and the saws have probably aged better than I.
     
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  16. greendohn

    greendohn firewood hack

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    Break in??

    I've run every saw I've ever owned WOT from day one..aint ever noticed any performance changes over time,,huh, who'd of thought,,,
     
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  17. Mastermind

    Mastermind Work Saw Specialist

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    There's no "need" to break in a new saw engine, but they will loosen up and spin freer...and the rings will seal up tighter.
     
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  18. sunfish

    sunfish Fish Head

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    Right you are! No need to do anything except run em like ya stole em.
     
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  19. sunfish

    sunfish Fish Head

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    If ya don't notice a saw getting stronger after it's first tank, you're just not paying attention, or it was so long ago ya don't remember. :D
     
  20. Grande Dog

    Grande Dog ArboristSite.com Sponsor

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    Howdy,
    The time it takes to break in is proportionate to the type of mix you're using. The slicker the mix, the more time it takes for rings to seat.
    Regards
    Gregg
     

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