Husqvarna CCC Ebay Store DHS Online Store

Echo cs 490 porting

Discussion in 'Chainsaws' started by Red97, Mar 18, 2016.

  1. Red97

    Red97 Mastermind Approved! GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Jan 2, 2016
    Messages:
    6,719
    Likes Received:
    48,021
    Trophy Points:
    510
    Location:
    MI
    Local Time:
    10:24 AM
    Well to keep the clutter out of the 590 thread, I will start this one.



    First cuts brand new out of the box, limiters, 18" .325 oregon semi chisel.
    [​IMG]

    Decent compression sotck.

    [​IMG]

    Plenty of skirt on this one, .043 off the base.

    [​IMG]
    Better.

    [​IMG]

    Piston wash.

    Pretty much identical to the 500p in miller mod saws thread.
     
    thedude74, 00wyk, jacob j. and 8 others like this.
  2. echoshawn

    echoshawn Blinker fluid

    Joined:
    Jan 9, 2016
    Messages:
    247
    Likes Received:
    647
    Trophy Points:
    158
    Location:
    Woods of North Idaho
    Local Time:
    10:24 AM
    Subscribed!
     
    thedude74, BGE541 and Red97 like this.
  3. echoshawn

    echoshawn Blinker fluid

    Joined:
    Jan 9, 2016
    Messages:
    247
    Likes Received:
    647
    Trophy Points:
    158
    Location:
    Woods of North Idaho
    Local Time:
    10:24 AM
    I'll be digging into my 500 a little tomorrow. Pics included.
    Thank god I bought those deflectors off of you. This saw will be getting a small one for sure!
     
    thedude74, Termitebuffet and Red97 like this.
  4. drf256

    drf256 Dr. Richard Cranium (“RC” to Muh pals) GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Dec 29, 2015
    Messages:
    8,333
    Likes Received:
    55,742
    Trophy Points:
    573
    Location:
    Strong Island NY
    Local Time:
    10:24 AM
    Another great thread Red.

    I may have to grab a 490 today.

    IIRC, around $299 at the Cheapo Depot.

    Are you doing a popup?

    Any stock numbers?
     
    thedude74, BGE541 and Red97 like this.
  5. drf256

    drf256 Dr. Richard Cranium (“RC” to Muh pals) GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Dec 29, 2015
    Messages:
    8,333
    Likes Received:
    55,742
    Trophy Points:
    573
    Location:
    Strong Island NY
    Local Time:
    10:24 AM
    Excuse my ignorance.

    Is the 490 akin to the 500 like a 590 is to a 600/620?

    Did Carl do a thread on the 500? If so, link?
     
    thedude74, Woodpecker and Red97 like this.
  6. Red97

    Red97 Mastermind Approved! GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Jan 2, 2016
    Messages:
    6,719
    Likes Received:
    48,021
    Trophy Points:
    510
    Location:
    MI
    Local Time:
    10:24 AM
    Stock numbers a a little bit different than what miller had on the 500p
    The intake shape is the same, square with a triangle on the bottom

    Square part is 71* very point is 82*
    Ex, 114*
    Tr, 125*
    Squish .052 with .020 base gasket.

    Yes the 490 is the cheaper version of the 500. But still come factory with a rim setup.

    Both miller, and mastermind reported these won't spin much/if any over 13k.

    With that in mind I want to get the comp way up, to emphasize the torque that is already present.

    Going to clean up the transfer ports, where the filler block blends in 124/5. Raise the ex to 106-7 (about max before it breaks through the port roof)
    Square up the intake a bit, still deciding if I want to fill the floor or not.?

    Set squish to .018 7* band.
    Don't think this piston lends itself to a popup. Tapered band with a slight dome. Plus the offset combustion chamber the popup would have to be very small diameter.
     
  7. bikemike

    bikemike Pinnacle OPE Member

    Joined:
    Feb 4, 2016
    Messages:
    2,263
    Likes Received:
    5,425
    Trophy Points:
    343
    Location:
    Cottage grove mn
    Local Time:
    9:24 AM
    Are we doing and fingers on this jug?
     
    thedude74, Red97 and BGE541 like this.
  8. BGE541

    BGE541 Super OPE Member

    Joined:
    Mar 1, 2016
    Messages:
    209
    Likes Received:
    495
    Trophy Points:
    123
    Location:
    Washington
    Local Time:
    7:24 AM
    Too cool! Already digging into it looks good!!!
     
    thedude74, Red97 and bikemike like this.
  9. Red97

    Red97 Mastermind Approved! GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Jan 2, 2016
    Messages:
    6,719
    Likes Received:
    48,021
    Trophy Points:
    510
    Location:
    MI
    Local Time:
    10:24 AM
    Nah, going to stay somewhat true to its roots. Don't really see where fingers can fit well in this jug.

    Unless we can find a suitable carb for this saw, it is pretty limited.

    The 590 carb bolts right on....

    Backwards. Lol

    So don't think that is an option.
     
  10. Miller Mod Saws

    Miller Mod Saws Chainsaw Masseuse

    Joined:
    Dec 29, 2015
    Messages:
    2,000
    Likes Received:
    8,511
    Trophy Points:
    345
    Location:
    Ravenwood,MO
    Local Time:
    9:24 AM
    Excellent I look forward to watching this build. :)

    Subbed!
     
    thedude74, Red97, Woodpecker and 2 others like this.
  11. bikemike

    bikemike Pinnacle OPE Member

    Joined:
    Feb 4, 2016
    Messages:
    2,263
    Likes Received:
    5,425
    Trophy Points:
    343
    Location:
    Cottage grove mn
    Local Time:
    9:24 AM
    Send a pic of your carb venturi from choke side. I think there is lots of material that can be dremel out of it.
     
    Red97 and Woodpecker like this.
  12. drf256

    drf256 Dr. Richard Cranium (“RC” to Muh pals) GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Dec 29, 2015
    Messages:
    8,333
    Likes Received:
    55,742
    Trophy Points:
    573
    Location:
    Strong Island NY
    Local Time:
    10:24 AM
    Define BAD CAD.......

    ImageUploadedByTapatalk1458397317.719317.jpg


    Sent from my iPad using Tapatalk
     
  13. Miller Mod Saws

    Miller Mod Saws Chainsaw Masseuse

    Joined:
    Dec 29, 2015
    Messages:
    2,000
    Likes Received:
    8,511
    Trophy Points:
    345
    Location:
    Ravenwood,MO
    Local Time:
    9:24 AM
    I'm not gonna call this one cad. Get that saw ported up and I think your gonna find out how much you like it. It and the 421 are just awesome cheap little saws. ;)
     
    thedude74, Moparmyway, cobey and 4 others like this.
  14. drf256

    drf256 Dr. Richard Cranium (“RC” to Muh pals) GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Dec 29, 2015
    Messages:
    8,333
    Likes Received:
    55,742
    Trophy Points:
    573
    Location:
    Strong Island NY
    Local Time:
    10:24 AM
    It came with a 20". A bit too much IMHO.
     
    thedude74 and Red97 like this.
  15. Miller Mod Saws

    Miller Mod Saws Chainsaw Masseuse

    Joined:
    Dec 29, 2015
    Messages:
    2,000
    Likes Received:
    8,511
    Trophy Points:
    345
    Location:
    Ravenwood,MO
    Local Time:
    9:24 AM
    I couldn't get the dam fuel nozzle out! Lol.
     
    thedude74, Termitebuffet and bikemike like this.
  16. Woodpecker

    Woodpecker Wooden Staff Member

    Joined:
    Jan 17, 2016
    Messages:
    4,882
    Likes Received:
    34,070
    Trophy Points:
    554
    Location:
    The middle of the land shaped like a hand
    Local Time:
    10:24 AM
    I've owned both saws. The only real difference is that the clutch cover is a little lighter and the handle is plastic vs coated alum. Also the bar on the 490 is a rebadged oregon pro lite vs the power match on the 500. Everything else appeared to be the same except minor cosmetic changes. Going to follow along and see what you come up with Red.
     
    thedude74 and Red97 like this.
  17. drf256

    drf256 Dr. Richard Cranium (“RC” to Muh pals) GoldMember

    I Support This Forum as a Gold Member!
    Joined:
    Dec 29, 2015
    Messages:
    8,333
    Likes Received:
    55,742
    Trophy Points:
    573
    Location:
    Strong Island NY
    Local Time:
    10:24 AM
    I'm thinking band and popup on mine. 105/126&127 and a squared intake.

    I have to finish a 261/262 on my bench and then it's on.

    Now I need to hide the box, lol.
     
  18. Miller Mod Saws

    Miller Mod Saws Chainsaw Masseuse

    Joined:
    Dec 29, 2015
    Messages:
    2,000
    Likes Received:
    8,511
    Trophy Points:
    345
    Location:
    Ravenwood,MO
    Local Time:
    9:24 AM
    I'm interested to see yours and Red97 outcome. On the intake I did the epoxy, widened it, yada, yada, and I would just leave it stock. But by all means play. I like seeing if someone else gets the same results as I did. :)
     
    huskihl, Red97 and echoshawn like this.
  19. Miller Mod Saws

    Miller Mod Saws Chainsaw Masseuse

    Joined:
    Dec 29, 2015
    Messages:
    2,000
    Likes Received:
    8,511
    Trophy Points:
    345
    Location:
    Ravenwood,MO
    Local Time:
    9:24 AM
    I have mine up for sale but if the solo I have for sale sells first I may port up a 421 and just see how close they are.

    Too many saws. Lol.
     
    thedude74, CoreyB, Fishnuts2 and 3 others like this.
  20. echoshawn

    echoshawn Blinker fluid

    Joined:
    Jan 9, 2016
    Messages:
    247
    Likes Received:
    647
    Trophy Points:
    158
    Location:
    Woods of North Idaho
    Local Time:
    10:24 AM
    [​IMG]
    [​IMG]
    [​IMG]
    Here's my pawn shop 500.
    I'm wondering if it started out life as a Home Depot rental saw?
    It's clean and runs.
    Haven't checked health on it yet.
    Gotta be the most restrictive outlet I've seen on a saw!
     
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