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661 Stroker

Discussion in 'Chainsaws' started by Redfin, Mar 17, 2019.

  1. Redfin

    Redfin Meh...

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    Ive had this idea rackin around my noodle since the first 661 I built. Mr Cole won a prize pick from me in one of the raffles and we got to chatting about what to build.

    Cole has an almost new 661 and what better time and fella to build a stroker for.

    Used a new 40mm 660 crank for this build. Displacement will be 98.52cc.

    My Buddy Deeter did the absolute exquisite machine work on the case. After recieving the case and parts back from Deeter I dropped all in the US tank and admired his work.

    I have a bunch of pics to post so hang tight.
    8EA4CA16-2316-4BD4-8D6E-78F5EF7AF37B.jpeg 4A2DBBAD-528C-4B66-B87F-5A65BD2D41C9.jpeg 3B9DA573-CEA2-4736-96D3-AF3EE3FA1B55.jpeg DA476742-1C9D-4371-8C13-2C94E51EACB2.jpeg 6665FDCE-3990-4B3C-A066-C195A9BD0E63.jpeg
     
    Last edited: Mar 18, 2019
  2. huskyboy

    huskyboy Sorta a Husqvarna guy.

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  3. Redfin

    Redfin Meh...

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    Above and below are pics Deeter took while machining. B0B5ABE3-72C5-41B4-9598-B9F01DDB2B35.jpeg 68DAEA47-63D5-46C6-8614-7F3A99890D01.jpeg
     
  4. Sty57

    Sty57 Mastermind Approved!

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    I'm just here for the T&A.........
     
  5. Sty57

    Sty57 Mastermind Approved!

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    P.M.P., Semotony, PA Dan and 11 others like this.
  6. Redfin

    Redfin Meh...

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    Before I sent the crank I hand filed the casting ridge on the big end. Filed perpendicular to the bearing to avoid any stress risers. Gained .02” taking off this material. 9C1526D1-9CAD-4E97-B22C-E8B8A4ABD1FB.jpeg
     
  7. Redfin

    Redfin Meh...

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    EACB9A99-4CA4-442D-AE45-A5AF911CE914.jpeg
     
    P.M.P., Semotony, sawfun and 22 others like this.
  8. Redfin

    Redfin Meh...

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    I ground a set of shitty bearings so Deets didnt have to fark with fitting the crank in the case while machining. 6D1CFB94-383F-4BA1-8C4D-957CB62D022E.jpeg
     
  9. Redfin

    Redfin Meh...

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    Started assembly this evening. Oem gasket set. AE7F5A0E-D4C6-4661-AB12-9AA22ECDE3FF.jpeg
    Bearings on. AB26EE3F-E527-4BCF-9B7B-8B63FBB6038D.jpeg
     
  10. Deets066

    Deets066 AKA Deetsey

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    Dykem
     
  11. Sty57

    Sty57 Mastermind Approved!

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    How thick is the spacer?
     
  12. Deets066

    Deets066 AKA Deetsey

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    You can make the spacer any thickness you want. Just depends on how much you want to cut the band. I think with no band cut it’s around .22 or .21
     
  13. Redfin

    Redfin Meh...

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    Cleaned mating halves in prep for gasket. 4A49699A-23A1-443C-B243-6C7E85BA3FAE.jpeg
    Fly side in. 7A124650-86C0-42D6-AC7A-5D8203EBA214.jpeg 8C449743-B1B9-49DD-926E-809F2F23B28F.jpeg
     
  14. Redfin

    Redfin Meh...

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    This one is .189” 39C3DEEE-DD5A-4D51-8EAA-D51A1B376ABF.jpeg
     
  15. Deets066

    Deets066 AKA Deetsey

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  16. Redfin

    Redfin Meh...

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    You Da Man Bro.
     
  17. Redfin

    Redfin Meh...

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    Checked clearance after flyside was installed. Have .042” on the counter weights and .016” on the big end. FB7F3FB7-7122-445F-8362-517FFF8D9929.jpeg 49F268D9-338D-4EFE-BD69-B3C1274BD590.jpeg F5559FFD-8028-44F7-9582-4B31DD08A42A.jpeg 64DA3752-46F7-4382-B00E-10FDF570B76B.jpeg
     
    Last edited: Apr 2, 2019
  18. Redfin

    Redfin Meh...

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    Trimmed the gasket and sent the pto side home. This where I am for now. C2CE6AAA-9B5D-48E8-AD4B-64E246E26677.jpeg D847AA46-71C3-43C4-A35B-A0828475C397.jpeg
     
  19. tree monkey

    tree monkey Mastermind Approved!

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    cool build, ya got a pic of the 660 crank alongside the 661 crank?
     
  20. jacob j.

    jacob j. Mastermind Approved!

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    This is one cool project, J.
     

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