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Woods ported my 660.

Discussion in 'Sub-forum for these Rice Burner 660 builds' started by Absolution, Jun 13, 2019 at 1:48 PM.

  1. Absolution

    Absolution Well-Known OPE Member

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    I grabbed some of my porting tools from my Shop but I forgot grab my right angle head. So I was unable to do my transfers. The saw was running 13,500 before now its running 13,800 on same carb settings. I'm going to turn it back to 13ish.

    Also I attached a a picture of the piston when I took jug off. And the spark plug was after, it looks a little dry.
     

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  2. huskyboy

    huskyboy Sorta a Husqvarna guy.

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    Did you match the boot to the opened up intake port?
     
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  3. Absolution

    Absolution Well-Known OPE Member

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    Nope, is there larger boots available. The rubber boot is one of the things I find annoying about the 660.
     
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  4. Deets066

    Deets066 AKA Deetsey

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    Did you put a timing wheel on it?
     
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  5. Absolution

    Absolution Well-Known OPE Member

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    Only widened I'm waiting for a bolt in the mail.
     
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  6. Absolution

    Absolution Well-Known OPE Member

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    I'm working with limited tools until I move the rest of my stuff down here. Like this is the timing wheel I made.
     

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  7. Wonkydonkey

    Wonkydonkey Pinnacle OPE Member

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    So is this a blue g660 thing with a hyway popup. Cylinder is ? Farmatec / hyway.

    No timing # yet.
    Any other mods
    timing adv ?
    Do you know what main jet is in the carb.. .67 or .74

    Any more info is gooder ;):D

    Btw good work on the cylinder so far....:)
     
  8. Deets066

    Deets066 AKA Deetsey

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    That’s a thing?
     
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  9. birdmeter

    birdmeter Super OPE Member

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    well keep up up to date. this is kinda interesting but how you gonna do this without top dead center?
     
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  10. Deets066

    Deets066 AKA Deetsey

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    Gotta find TDC, it’s pretty simple
     
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  11. mdavlee

    mdavlee Hillbilly grinder

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    I use the intake floor opening and set it on the same number. It’s less subjective to dwell times than TDC.
     
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  12. Absolution

    Absolution Well-Known OPE Member

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    Nope, no timing numbers. no timing advance.
    Carb that came with saw good question on the jets.


    .020 squish
    dual port muffler gutted with spark arresters
    farmertec jug hyway piston.
    oem wrist pin clips and bearing.

    I'm waiting for a bolt then going to time and then move it maybe add some fingers.
     
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  13. Absolution

    Absolution Well-Known OPE Member

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    Also for those who were trying to use airtools that can't go down to low rpms. I tried these in a electric flex shaft. And turned up the speed. I don't think I'll ever go back to a standard carbide bit.
     

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    Last edited: Jun 13, 2019 at 5:06 PM
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  14. MG porting

    MG porting Pinnacle OPE Member

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    You really didn't need to open the mouth of the intake like you did but never the less nice port work make sure that when you widen the intake port at the cylinder area that you don't go to wide or the bottom ring will snag do to how close the ring end is located.
     
  15. Absolution

    Absolution Well-Known OPE Member

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    Very good point, I haven't had a chance time to take it apart today I've been running a 80 foot boom since 6am. But maybe Sunday I'll rip into it and look.
     

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    Last edited: Jun 14, 2019 at 5:24 PM
  16. MG porting

    MG porting Pinnacle OPE Member

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    Very nice
     
  17. Absolution

    Absolution Well-Known OPE Member

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    Long story short. PRO MAC 6 didn't want to start, got pissed grabbed the 660 off work bench 2nd pull saw started. (reason I love the damn thing)

    I was cutting down live oak today that was just starting to die it was probably only 18" ( Then again down here that seems to be the norm). I didn't want it to fall on it's own and crush the driveway.

    Onto the 660 performance

    I didn't mess with the carb at all Saw has a lot faster throttle response which was surprising since I didn't mess with transfers. The saw also seemed to have more grunt on the high end which was much better than before. I cant wait to get the timing wheel on it and see what the numbers are.
     
  18. Deets066

    Deets066 AKA Deetsey

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    Did you have the base of the jug machined? I see you are running a pop up. If you dropped the jug and cut a pop up, your exhaust is most likely high and intake Probly low. This will result in fast throttle response and a saw that will like rpm.
    Tune it to 14.2 and report back
     
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  19. Moparmyway

    Moparmyway Its just a saw

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    Pop-up definitely wasn't spun on that piston in the picture

    Popup_LI.jpg
     
  20. MustangMike

    MustangMike Mastermind Approved!

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    Missed not seeing you and your saws at CT Kevin, maybe next time!
     
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