HLSupply Chainsaw Parts Buy Used Saws CCC Ebay Store HLSupply Daily Deals

Epoxy in the intake? Ms660

Discussion in 'Sub-forum for these Rice Burner 660 builds' started by Golddredger, Mar 3, 2018.

  1. Golddredger

    Golddredger Active OPE Member

    Joined:
    Feb 18, 2018
    Messages:
    10
    Likes Received:
    21
    Trophy Points:
    43
    Location:
    Paradise, Ca.
    Hey fellas,
    Keeping seeing in the 660 build threads guys saying they have epoxied the intake. I looked through cant really find any good pictures of this and or why its being done? Can you guys post some pictures and explain why you are doing it? Thanks!
     
    MustangMike likes this.
  2. huskihl

    huskihl Just an ordinary member

    Joined:
    Dec 31, 2015
    Messages:
    9,811
    Likes Received:
    49,878
    Trophy Points:
    525
    Location:
    East Jordan, mi
    MS660's are known to have too much exhaust duration. They seem to run better with the exhaust opening down around 100° after tdc. Stock, they vary from about 93 to 98°. In order to get the exhaust port physically lower, the base gets cut on a lathe. This also makes the intake lower. Sometimes too low for good performance. Many consider an 80° intake opening to be about right, but most of the Farmertec cylinders have the intake down around 86. After machining, they get close to 89°, which isn't optimal. Filling the bottom of the intake port with epoxy allows you to grind it down to a more preferred opening height
     
  3. Golddredger

    Golddredger Active OPE Member

    Joined:
    Feb 18, 2018
    Messages:
    10
    Likes Received:
    21
    Trophy Points:
    43
    Location:
    Paradise, Ca.
    Awesome thanks!
     
    darkimpulse and huskihl like this.
  4. Deets066

    Deets066 AKA Deetsey

    Joined:
    Dec 28, 2015
    Messages:
    9,261
    Likes Received:
    39,013
    Trophy Points:
    501
    Location:
    Illinois
  5. Golddredger

    Golddredger Active OPE Member

    Joined:
    Feb 18, 2018
    Messages:
    10
    Likes Received:
    21
    Trophy Points:
    43
    Location:
    Paradise, Ca.
    MustangMike and huskihl like this.
  6. Deets066

    Deets066 AKA Deetsey

    Joined:
    Dec 28, 2015
    Messages:
    9,261
    Likes Received:
    39,013
    Trophy Points:
    501
    Location:
    Illinois
    Port prep is big, definitely wash and degrease cylinder. I like to grind in a few dimples on the floor. Then bead blast
     
Loading...

Share This Page

Loading...