ArboristSite.com Sponsors
 
 


poulan piston rings

Discussion in 'Chainsaw' started by Mr Goodwrench, Nov 26, 2011.

  1. Mr Goodwrench

    Mr Goodwrench ArboristSite Operative

    Joined:
    Oct 8, 2008
    Messages:
    134
    Likes Received:
    23
    Location:
    Illinois
    Rebuilding a POULAN 25DA only piston rings I have found have the notch in the ends for a locating pin which my saw does NOT have (guess the later ones did) think the notched rings will work? guy in the saw shop told me they would, but I would like more opinions. Thanks
     
  2. Roanoker494

    Roanoker494 Addicted to ArboristSite

    Joined:
    Sep 9, 2010
    Messages:
    5,188
    Likes Received:
    483
    Location:
    Narrows, Va 24124
    If you know the bore size and ring thickness you will have many aftermarket options for half the price. My opinion is the notched rings may work but not sure I would trust them. On the down stroke there would be no pin to support the notched ends.
     
  3. 67L36Driver

    67L36Driver Addicted to ArboristSite

    Joined:
    Nov 1, 2010
    Messages:
    7,247
    Likes Received:
    2,437
    Location:
    St. Joseph, MO
    The 'Greek' comes to mind.

    On the down stroke, combustion pressure is forcing the rings against the bottom ring land. So, put the notch up.

    I'd look for conventional gap rings with a gap of .008"-.0012" or so.
     
    Last edited: Nov 26, 2011
  4. Mr Goodwrench

    Mr Goodwrench ArboristSite Operative

    Joined:
    Oct 8, 2008
    Messages:
    134
    Likes Received:
    23
    Location:
    Illinois
    thanks guys, bore is 1.500 and ring thickness is .062 (1\16) where can I get those aftermarket?
     
  5. ncfarmboy

    ncfarmboy Addicted to ArboristSite

    Joined:
    Mar 20, 2011
    Messages:
    1,242
    Likes Received:
    151
    Location:
    Hayesville, NC
    Call Northwood saw site sponsor or Ebaymessage the "Greek" dandrikop. Did some looking PN: 530029391 @ two of my OEM parts sources both show still available OEM $2.62 ea + ship PM me for sources.
    Shep
     
    Last edited: Nov 27, 2011
  6. redunshee

    redunshee Addicted to ArboristSite

    Joined:
    Oct 16, 2007
    Messages:
    4,885
    Likes Received:
    429
    Location:
    Texas, but spend time in Vermont
    I've 5, S25DA/CVA's and none have the locating pin. If memory serves me, all of the rings have square ends. If you find some let me know. Good to have some on hand.
    Bob
     
  7. Modifiedmark

    Modifiedmark Tree Freak

    Joined:
    Dec 2, 2007
    Messages:
    15,552
    Likes Received:
    1,976
    Location:
    NW Indiana
    Yes it would be good to know as you never know... :givebeer:
     
  8. Eccentric

    Eccentric Mister Wizard

    Joined:
    Jan 21, 2007
    Messages:
    14,666
    Likes Received:
    2,145
    Location:
    Northern California.
    I'd be extremely interested in a source for OEM or equivelant rings for the 38mm bore Poulan S25 saws. The smaller bore (36.5mm) 25DA rings 530023352 are still available from Sears for about $5 each, plus about a million bux for shipping. Because of that...........I'd be interested in a source for some cheaper smaller bore 25 rings as well......


    Edit:

    Got a couple Poulan XXV series ring and piston part number questions for you fellows...

    -In both an S25DA and S25-CVA IPL that I have (and the Sears IPL's on line), the 38mm bore rings are 530023485.

    -In an S25DA Electronic IPL that I have, the rings are listed as 530029391. Are these rings interchangable with the older S25 ring part number of 530023485? That's the question. If they are, then it looks like Shep has a cheap source for them.

    -Also.....I see that 530023484 is the piston assembly in the older S25 IPL's I mentioned above, while 530069298 is listed as the piston assembly in the S25DA Electronic IPL. Are these pistons interchangable?

    I'm going to buy a few sets of those rings right quick if possible. Wonder if his source has 530023484 pistons, 530069298 pistons, and 530023602 and 530023596 CVA isolators...
     
    Last edited: Nov 28, 2011
  9. Roanoker494

    Roanoker494 Addicted to ArboristSite

    Joined:
    Sep 9, 2010
    Messages:
    5,188
    Likes Received:
    483
    Location:
    Narrows, Va 24124
    Google Otto Engine Works
     
  10. redunshee

    redunshee Addicted to ArboristSite

    Joined:
    Oct 16, 2007
    Messages:
    4,885
    Likes Received:
    429
    Location:
    Texas, but spend time in Vermont
    Hope you're right. Just because they show as being available doesn't mean they actually have them. Tell me how I know.
    Bob
     
  11. redunshee

    redunshee Addicted to ArboristSite

    Joined:
    Oct 16, 2007
    Messages:
    4,885
    Likes Received:
    429
    Location:
    Texas, but spend time in Vermont
    I don't have the Electronic S25DA IPL so I can't comment. I'd be surprised though, if they didn't use the same part. One possibilty would be that when they switched to locater pins on the piston they switched rings and therefore part numbers.
     
  12. ncfarmboy

    ncfarmboy Addicted to ArboristSite

    Joined:
    Mar 20, 2011
    Messages:
    1,242
    Likes Received:
    151
    Location:
    Hayesville, NC
    Very true that's why I told them to call. I also know! If they don't actually have them I think you're best bet would be the "Greek".
    Shep
     
  13. Eccentric

    Eccentric Mister Wizard

    Joined:
    Jan 21, 2007
    Messages:
    14,666
    Likes Received:
    2,145
    Location:
    Northern California.
    Thanks for your input gentlemen!
     

Share This Page