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port areas

  1. Hobbylogger

    Stihl 039 intake port

    I just got this upper end for an 029 build and I noticed this casting/ coating blem on the bottem side of the intake port. Should I remove and chamfer it? Also I noticed the transfers have sharp edges, should I chamfer those? Any input will be greatly appreciated.
  2. MattG

    Some interesting reading about port fundamentals

    I just found this. Whilst a lot is written in a Slavic language, if you scroll down to post #4 you'll see the forum's founder writes in English (at least it was on my browser) and starts a very interesting description on porting fundamentals both in theory and in practice. I hope others may find...