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ms 461 woods port race thing

Discussion in 'Chainsaws' started by tree monkey, Jan 12, 2018.

  1. tree monkey

    tree monkey Jon1212 Approved!

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    factory muffler with 80 present of the front intact, I think is what it is
     
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  2. tree monkey

    tree monkey Jon1212 Approved!

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    tr is bottom fed like a 661
     
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  3. cus_deluxe

    cus_deluxe ONE OF THE GREATEST!

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    so ur saying why the dead spot in between transfers, even tho the bridge is only a couple mm wide?
     
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  4. tree monkey

    tree monkey Jon1212 Approved!

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    DSC01223.JPG

    the other side
     
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  5. tree monkey

    tree monkey Jon1212 Approved!

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    that's part of it
     
  6. cus_deluxe

    cus_deluxe ONE OF THE GREATEST!

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    Hard to tell from pic, are the roofs of the transfers flat or or are you trying to open part of the primary first, instead of all at once?
     
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  7. tree monkey

    tree monkey Jon1212 Approved!

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    DSC01224.JPG

    stock piston
     
  8. paragonbuilder

    paragonbuilder Jon1212 Approved!

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    Trying to guess exactly where the piston sits in the bore, it appear that both front and rears are purging on the exhaust side of the openings.
    The extra long trail on the rears, makes it appear that they have more velocity, open first?
    The bridge is very narrow, yet there is quite a large space in the wash pattern.
    I’m pondering why this may be...
     
  9. tree monkey

    tree monkey Jon1212 Approved!

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    primary's open first, flat, all at once
     
  10. tree monkey

    tree monkey Jon1212 Approved!

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    your starting to see what I see, yes why.
     
  11. wcorey

    wcorey Pinnacle OPE Member

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    That you'll be adding some JB weld to the outside corner of the upper primary's...?
     
  12. paragonbuilder

    paragonbuilder Jon1212 Approved!

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    Well first your previous post says the primaries open first, which means they should have the initial burst and thus more velocity..., so I’m wrong in that...

    What I see is that possibly the mains need more taper toward the intake, they appear to be crashing into the wall and diverting more towards the center of the cylinder. Not really any room to bring them back though. Bridge is too narrow.
     
  13. Deets066

    Deets066 AKA Deetsey

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    Direction through the tunnel. Run water through it, I bet it shows what you are looking for
     
  14. tree monkey

    tree monkey Jon1212 Approved!

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    I think so

    primary's and mains are the same thing, just a different term, port nearest the ex.
    there's turbulence in the port causing the fresh charge to go straight out the ex port. epoxy in the right place might help.
    also opening the secondary's sooner might help
     
  15. paragonbuilder

    paragonbuilder Jon1212 Approved!

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    I was wondering if epoxy would hold up in that environment? I suppose it constantly cooled by the fresh charge.
    I also have some extreme heat jb here that is good for over 2000 degrees. I haven’t tried it yet though...


    Sent from my iPhone using Tapatalk
     
  16. paragonbuilder

    paragonbuilder Jon1212 Approved!

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    What would an ideal piston wash look like? I’ve tried to make them even, but never really knew what they should look like.


    Sent from my iPhone using Tapatalk
     
  17. tree monkey

    tree monkey Jon1212 Approved!

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    the stock piston tells me the problem has always been there, likely why the saw is being replaced
     
  18. wcorey

    wcorey Pinnacle OPE Member

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    I actually was referring to building up the outside, so the corner of the tunnel can be broken through when redirecting the flow by grinding more angle to the front outside corner of the primary's.
     
  19. tree monkey

    tree monkey Jon1212 Approved!

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    I want the wash equal to the port angled towards the intake. the secondary's look fair
     
  20. Fruecrue

    Fruecrue I got wood

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