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Let's build me a red head 670!

Discussion in 'Chainsaws' started by Johnmn, Oct 10, 2018.

  1. Johnmn

    Johnmn Pinnacle OPE Member

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    So the 625/630/670 has got to be my favorite series of saws. They are simple, rugged and really keep up pretty damn good with the new stuff!
    The 625 is an open port 60cc saw.
    The 630 is a closed port 60cc saw that had ks and mahle cylinders. I have timed both and both have been very close.
    The 670 is the big daddy closed port 67cc both of mine are mahle but I believe Gilardoni made them as well.

    I currently have the saw tore down soaking in parts cleaner. This will also be real time and I'm gonna need to order some parts so it will be slow!
    Here is the cylinder I'm working with
    IMG_20181010_131826569.jpg
     
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  2. Johnmn

    Johnmn Pinnacle OPE Member

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    IMG_20181010_141230514.jpg
    Still cleaning.....
     
  3. smokey7

    smokey7 Pinnacle OPE Member

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    My favorite saw to build too. I have a few from 625 to 670 and blends of huskys too. If you need some stuff i may be able to share/spare s couple things. Ive gotten things payed forward to me from here and should probably do the same.
     
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  4. Johnmn

    Johnmn Pinnacle OPE Member

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    Thanks! I think I'm going to build this extra spicy for maybe a just for fun/GTG saw. But for now, bearings,seals, o rings, gaskets, impulse, fuel line and filter, intake boot, carb kit, meteor piston ect.
    I'm also thinking about a 266 p&c in my 630 just because it's a direct swap
     
  5. smokey7

    smokey7 Pinnacle OPE Member

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    I have one with a 266 topend and i cant tell the difference with it and a 670 topend. I too feel like the 266 268cp 630 and 670 all run better then the 272. Or atleast sportier and more free.
     
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  6. Johnmn

    Johnmn Pinnacle OPE Member

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    IMG_20181011_125641674.jpg
    Got more parts cleaned up last night! Hopefully more cleaned up tonight as well!
     
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  7. Johnmn

    Johnmn Pinnacle OPE Member

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    If I could post videos I'd post one on how well they run! I'm shooting to disappoint a 372 or 2! I know it can be done!
     
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  8. Johnmn

    Johnmn Pinnacle OPE Member

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  9. 5000+

    5000+ Well-Known OPE Member

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    Loaded with a 24" or longerbar burried the 272 will pull ahead.
     
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  10. Johnmn

    Johnmn Pinnacle OPE Member

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    Parts are in route!
     
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  11. old guy

    old guy Pinnacle OPE Member

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    Hey John, I can hear one of my 372s smirking out in the shop, I guess it's on.
     
  12. Johnmn

    Johnmn Pinnacle OPE Member

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    IMG_20181025_172159017.jpg
    New bearings showed up today!
    IMG_20181025_172940307.jpg
    I enjoy using @Mattyo tool for this!
    IMG_20181025_173627107.jpg
    Quick and easy
    IMG_20181025_190312501.jpg
    Heat up the case halfs in the toaster oven
     
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  13. Dub11

    Dub11 Some body poisoned the watering hole!

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  14. Johnmn

    Johnmn Pinnacle OPE Member

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    IMG_20181025_180758022.jpg
    Crank slides right into hot case
    IMG_20181025_181600449.jpg
    A little 518 and the gasket
    IMG_20181025_190918704.jpg
    Boom! Complete! I heat my cases to 325 for 10 minutes and every goes together slick as snot.
     
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  15. Johnmn

    Johnmn Pinnacle OPE Member

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    On the older ones I slide them on the crank first and then they sit flush on the inside of the case. On the newer ones I install the bearing on the case first because they have a stop.
     
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  16. Johnmn

    Johnmn Pinnacle OPE Member

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    New o-ring on the seal retainer.
    IMG_20181025_194939141.jpg
    I like to put some oil on the bearings
    IMG_20181025_195202845.jpg
    Install seal in bearing retainer
    IMG_20181025_195150148.jpg
    Then install retainer
    IMG_20181025_195527124.jpg
     
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  17. Johnmn

    Johnmn Pinnacle OPE Member

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    New bellows,kill switch and some heat tape oh and tank installed.
    IMG_20181026_095738523.jpg
     
  18. Johnmn

    Johnmn Pinnacle OPE Member

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  19. Johnmn

    Johnmn Pinnacle OPE Member

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    This is where I need a little help timed the ports without base gasket.
    Ex. 107
    Trans. 123.5
    Intake 71.5

    Now I am thinking about leaving the transfers and taking the exhaust up to 103 and maybe intake to 78? Any thoughts appreciated!
     
    Last edited: Oct 26, 2018
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  20. srcarr52

    srcarr52 We can't stop here, th1s is bat country!

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    No need to go larger duration on the intake than on the exhaust. It's only going to reduce your crankcase compression.
     
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