engine mod

Discussion in 'Touring Models' started by spartacus55, Dec 14, 2008.

  1. spartacus55

    spartacus55 Active Member

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    just had a 103 kit installed on my 2007 road king big bore pistons, cylinders,255 cams, tru duals, hi flow air filter. Is there any type of break in required for the engine.:
     
  2. glider

    glider Veteran Member

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  3. harleybodei

    harleybodei Member

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    I think that you would want to take it easy for at least a few hundred miles or so......:31:
     
  4. Mattman4403

    Mattman4403 Junior Member

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    Like Hobbit and Glider. You have a new top end need to get the rings to seal up.
     
  5. Fossil

    Fossil Active Member

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    I agree with the take it easy part. Starting with the Evo's the piston rings in the alloy cylinders no longer "seat". The cylinders are barrel shaped and the heat of the engine straightens up the cylinders. You can look through the spark plug holes on my 100K plus Evo and still see the cross hatching on the cylinder walls. Usually tales about high mileage Evo and Twin Cams usually have good warm ups on a cold engine before the bike is ridden. Fossil