Any Briggs and Stratton gurus hang out here?

Discussion in '4-Stroke Engines' started by springfieldscooter, Sep 29, 2016.

  1. Any Briggs and Stratton flathead gurus hang out here?
    Ive got a little 3 hp briggs .
    Its a flathead , and runs great as is.
    No governor , NT carb, open exhaust, etc.
    Id like to replace the plastic camshaft with metal.
    Good idea or bad?
    I realize the plastic cam might turn faster (lighter) , but I am concerned with durability.
    Should I leave it alone, or replace with a different cam?
    If I replace camshaft, any recommendations on a source?
    Thanks in advance.

  2. EEls

    EEls New Member

    honesty, it will not effect the engine at all tbh. the best part of the plastic, it that if it freezes, it will just strip the gears instead of going through the crank case.
  3. Dan Adel

    Dan Adel New Member

    I would agree, if it runs decent, leave it alone. A 3hp will hall you around pretty well. I had one and it pulled my 220 lbs around.
  4. butre

    butre Well-Known Member

    unless you want to change duration and/or lift then don't worry about it. if it breaks it'll just strip the gear and wont destroy the whole engine.
  5. Steve Best

    Steve Best Well-Known Member

    Quite frankly I'd try hand grinding the plastic cam for more lift and duration.
    Make yourself up a jig to get a consistent base circle and grind away!
    Self lubricating material, won't damage the lifters, wow, what an opportunity.