Buy Used Saws CCC Ebay Store

What oil is best? and what ratio?

Discussion in 'Chainsaws' started by DexterDay, Dec 28, 2015.

  1. 3browns

    3browns Super OPE Member

    Joined:
    Oct 18, 2018
    Messages:
    168
    Likes Received:
    730
    Trophy Points:
    133
    Location:
    Alaska & Hawaii
    WTF!!!!
     
    RI Chevy and Cat 525 like this.
  2. huskihl

    huskihl Sausage Fingers Forever

    Joined:
    Dec 31, 2015
    Messages:
    13,243
    Likes Received:
    73,433
    Trophy Points:
    578
    Location:
    East Jordan, MI
    In the other thread he said that the saw got hot enough to melt a plastic parition on the intake side of the motor. The guy kept running it and it did this. Seems like the chains would have to be dull and they just kept dogging the saw in to get them to cut. You'd think it would take hours of operation to do that.
     
    smokey7, RI Chevy, 3browns and 2 others like this.
  3. 3browns

    3browns Super OPE Member

    Joined:
    Oct 18, 2018
    Messages:
    168
    Likes Received:
    730
    Trophy Points:
    133
    Location:
    Alaska & Hawaii
    I would love to see a picture of the entire saw to see if the paint on the bar was toasted as well

    The whole damn saw would have been smoking

    I guess it could be operator error but man oh man, if it was this is some short bus stuff right here.....
     
    danimal, smokey7, Dub11 and 4 others like this.
  4. andyshine77

    andyshine77 Pinnacle OPE Member

    Joined:
    Aug 17, 2017
    Messages:
    305
    Likes Received:
    1,263
    Trophy Points:
    208
    Location:
    Cincinnati, OH
    I honestly don't know how an engine could keep running long enough to cause that much damage. Amazing.
     
    smokey7, Dub11, RI Chevy and 3 others like this.
  5. bwalker

    bwalker Pinnacle OPE Member

    Joined:
    Jan 12, 2016
    Messages:
    1,383
    Likes Received:
    3,045
    Trophy Points:
    275
    Location:
    UP
    On high performance engines I have seen that sort of damage happen in seconds.
     
    Last edited: Nov 8, 2018
    Redbull661, smokey7, RI Chevy and 3 others like this.
  6. 3browns

    3browns Super OPE Member

    Joined:
    Oct 18, 2018
    Messages:
    168
    Likes Received:
    730
    Trophy Points:
    133
    Location:
    Alaska & Hawaii
    What would or could be the cause of catastrophic damage that bad in a matter of seconds?
     
    RI Chevy and andyshine77 like this.
  7. andyshine77

    andyshine77 Pinnacle OPE Member

    Joined:
    Aug 17, 2017
    Messages:
    305
    Likes Received:
    1,263
    Trophy Points:
    208
    Location:
    Cincinnati, OH
    I just looks like damage that was done over time IMHO, not sudden catastrophic failure.
     
    RI Chevy and 3browns like this.
  8. bwalker

    bwalker Pinnacle OPE Member

    Joined:
    Jan 12, 2016
    Messages:
    1,383
    Likes Received:
    3,045
    Trophy Points:
    275
    Location:
    UP
    Detonation.
     
    RI Chevy and Wood Chopper like this.
  9. bwalker

    bwalker Pinnacle OPE Member

    Joined:
    Jan 12, 2016
    Messages:
    1,383
    Likes Received:
    3,045
    Trophy Points:
    275
    Location:
    UP
    On a saw you are probably right.
     
    Last edited: Nov 8, 2018
  10. 3browns

    3browns Super OPE Member

    Joined:
    Oct 18, 2018
    Messages:
    168
    Likes Received:
    730
    Trophy Points:
    133
    Location:
    Alaska & Hawaii
    So are we back to some sort of fuel related cause?

    The repetitive nature of the damage kind of rules out part failures I would think

    Or are we sticking with "operator headspace"...
     
    Last edited: Nov 8, 2018
    Cat 525 and RI Chevy like this.
  11. bwalker

    bwalker Pinnacle OPE Member

    Joined:
    Jan 12, 2016
    Messages:
    1,383
    Likes Received:
    3,045
    Trophy Points:
    275
    Location:
    UP
    Air leak induced lean question would be my guess.
     
    Cat 525 and RI Chevy like this.
  12. bwalker

    bwalker Pinnacle OPE Member

    Joined:
    Jan 12, 2016
    Messages:
    1,383
    Likes Received:
    3,045
    Trophy Points:
    275
    Location:
    UP
    Of all the seizures I have seen only one could be attributed to fuel and that engine was very marginal for pump gas compression wise. The rest were caused by lean conditions as a result of mostly air leaks, but some times temp.
    Given the low compression ratios of saws I would wager that just about all burn downs are a result of air leaks or severely lean carb settings. Even with really lean carb settings its tough to burn a saw down.
     
    huskyboy, Roadfxr, 3browns and 3 others like this.
  13. junkman

    junkman Crush it

    Joined:
    Jan 3, 2016
    Messages:
    4,152
    Likes Received:
    15,939
    Trophy Points:
    446
    Location:
    pacific northwest
    You left out operator error ,some people should not be around 2 strokes.
     
    danimal, RI Chevy, Dub11 and 3 others like this.
  14. bwalker

    bwalker Pinnacle OPE Member

    Joined:
    Jan 12, 2016
    Messages:
    1,383
    Likes Received:
    3,045
    Trophy Points:
    275
    Location:
    UP
    If the carbs set right and there is at least some oil in the gas a two stroke OPE engine is very tough to kill.
     
    huskyboy, RI Chevy and BangBang77 like this.
  15. Flatzout

    Flatzout Well-Known OPE Member

    Joined:
    Nov 5, 2017
    Messages:
    39
    Likes Received:
    116
    Trophy Points:
    78
    Location:
    Kathleen , FL
    Only the operator knows what he or she did to those 362's.
     
    RI Chevy likes this.
  16. Deets066

    Deets066 AKA Deetsey

    Joined:
    Dec 28, 2015
    Messages:
    12,245
    Likes Received:
    54,726
    Trophy Points:
    516
    Location:
    Illinois
    Or..... they don’t
     
    Dub11, huskyboy, 3browns and 4 others like this.
  17. danimal

    danimal Pinnacle OPE Member

    Joined:
    Apr 12, 2016
    Messages:
    1,103
    Likes Received:
    3,072
    Trophy Points:
    275
    Location:
    Armpit of da Midwest
    Xactly. Idiots tear chit up and clueless as to what happened.
    Like a fella rented da house across da rd couple winters back.
    Was using bar oil for his 2stroke mix.
    ( hey! why aint this saw running like it was last wkend)
    Ya cant fix stupid.
    Which these new puter saws are, by the way.
     
  18. Redbull661

    Redbull661 661 hoarder (BlueBallz)

    Joined:
    Dec 31, 2015
    Messages:
    976
    Likes Received:
    10,341
    Trophy Points:
    463
    Location:
    wisconsin
    - when I had the thermocouple probe threaded into the decomp port scott and I were getting ignition temps of ~1850 F degrees.

    - With the thermocouple (ring mounted under/spark plug tightened down on top of) the highest I've had the 661 was ~540F

    - I can get the saw to ~475-500F pretty quick 30-40sec cut with long bar and full comp chain, in the summer and I am running 32:1.


    - Aluminum melts somewhere around 1100F


    Factor in any or a few of these below = doesn't seem like a stretch to say you will quickly be walking the razors edge.
    - old gas, dull chain, workin the saw, 50:1 (I say 50:1 because all the saws I've seen roasted have been 50:1), poor bar oil, worn/bad clutch, bad tune, hot sunny day, list goes on and on...


    But! for another measly .20cents per gallon one could run 40:1 - add a little insurance. Bearings is what needs the most oil anyway.
     
    Last edited: Nov 30, 2018
  19. Deets066

    Deets066 AKA Deetsey

    Joined:
    Dec 28, 2015
    Messages:
    12,245
    Likes Received:
    54,726
    Trophy Points:
    516
    Location:
    Illinois
    Egt’s are gunna tell you more than anything. Aluminum melts at around 1250 from what I’ve heard. I’ve seen 2 strokes live at 1325 egt but that’s walkin a thin line
     
    Sty57, smokey7, mdavlee and 1 other person like this.
  20. Wood Chopper

    Wood Chopper Pinnacle OPE Member

    Joined:
    Apr 26, 2017
    Messages:
    606
    Likes Received:
    2,160
    Trophy Points:
    235
    Location:
    Mechanicville NY
    So let me ask a question That I’m sure has been brought up more than a few times elsewhere how important is the flash point of an oil. I’m running Amsoil saber at 40 to 1 contemplating going to something with the higher flashpoint like Motul 800 2t. I’ve never had a problem so I should probably just leave well enough alone I just think it’s interesting


    Sent from my iPhone using Tapatalk
     
    RI Chevy likes this.
Loading...

Share This Page

Loading...
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice