MS461 intake porting question?

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James Sawyer

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Looking at some woods port work. The ports on this OEM cylinder are a little wonky. Looking for some advice.

My cylinder does not match my case very well. I'd have machine the case not the cylinder to do so. the cylinder intake opening is larger than the case. I used transfer ink and was surprised that the cylinder intake was larger than the opening in the case. Note: the base gasket has a tap that suppose indicate the gasket position of intake side. But as reference with gasket flipped around it outlines a better match between the too.

What's the thought on machining the case?

If I squared up the cylinder intake port without machining the case, I would create a turbulent in the air flow.

This saw is high hour saw so while have it apart I want replaces the bearings & seals, so I could machine the case when I have them apart. This OEM ports on this saw are terrible nothing uniformed on the exhaust side or intake.

Any thoughts on this case to cylinder intake matching?
 

Attachments

  • cylinder to case matching transfer ink.jpeg
    cylinder to case matching transfer ink.jpeg
    1.2 MB
  • cylinder with exhaust side of the gasket over intake.jpeg
    cylinder with exhaust side of the gasket over intake.jpeg
    371.6 KB
  • Case with exhaust side of gasket over intake.jpeg
    Case with exhaust side of gasket over intake.jpeg
    349.2 KB
  • Case gasket over lay .jpeg
    Case gasket over lay .jpeg
    1.2 MB

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