22 hp kohler

Discussion in 'Mechanic and Repair' started by newblade, Jul 6, 2005.

  1. newblade

    newblade LawnSite Member
    Posts: 162

    I am fixing to have to rebuild a 22 hp kohler. Does anyone know how much horsepower will be gained if I bore it out .020 or .010? :cool:
  2. specialtylc

    specialtylc LawnSite Bronze Member
    Posts: 1,656

    It wont have anymore HP than when it was new.
  3. LawnBoy89

    LawnBoy89 LawnSite Senior Member
    Posts: 967

    Why wouldn't you see horsepower gains after you bore it out?
  4. cushman

    cushman LawnSite Member
    from se pa
    Posts: 36

    Boring the motor .010 should result in a nice power increase.

    Assuming the power increase is proportional to the displacement increase your motor will have 22.14 HP after you're done.
  5. khouse

    khouse LawnSite Bronze Member
    Posts: 1,465

    on a new engine and a new engine bored .020 over you won't feel any noticable difference. But you will feel a difference from a worn out engine after a rebuild bored over or not. I find that most engines are running under the rated rpm's so make sure your at the factory high idle speed ussually at least 3600 rpm's

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