NiKaSil lined cylinders

Discussion in 'Victory General Discussion' started by hogwild, Dec 22, 2012.

  1. hogwild

    hogwild New Member

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    does any 1 know if our victory bikes have nikasil lined cylinders?
     
  2. vegas_8-ball

    vegas_8-ball Member

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    yes
     
  3. iabob

    iabob Well-Known Member

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    I do too!
     
  4. FlaMike

    FlaMike Member

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    I didn't but do now.
     
  5. keithgrey

    keithgrey Well-Known Member

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    Are we sure it's NikaSil and not NiCom, or a version of SCEM? NikaSil is not exactly the most modern cylinder coating in use for aluminum engines. Kg
     
  6. spider

    spider OT-CAN

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    I'm sure.
     
  7. spider

    spider OT-CAN

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    I was trying to edit my last post then my computer shut down, time for a new one.

    Anyhow, what was the reason for the question ?

    The reason I'm sure is I am in the middle of rebuilding my motor and the Nikasil sleevesare one of the reasons I chose to build the way I am.
    You cannot bore out these liners so for more power you either go with high compression pistons or if you want larger displacement you press out the stock liners and press in different liners.
     
  8. Vicbuilder

    Vicbuilder Member

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    The stock motor uses Nikasil coating. It is not a removable liner, it's a coating. Big bore motors can be bored and re-lined (recoated really) up to 103mm, over that and we use removable ductile steel liner. Both the Nikasil and the aftermarket big-bore steel are very durable.
     
  9. spider

    spider OT-CAN

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    Yes,Nikasil not a removeable " liner " to speak but the steel " sleeve " that is pressed into the aluminum cyclinder that has the Nikasil coating is removeable.
    And my point was that if you wanted to" add displacement" the only option without stroking the motor is to replace the liner.
     
  10. Vicbuilder

    Vicbuilder Member

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    A steel liner is not Nikasil coated, it is hard enough on its own. There is such a thing as aluminum liners that are Nikasiled, but we dont use them in production aftermarket kits for Vics (yet, maybe)
     
  11. bikendad

    bikendad Well-Known Member

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    As I understand it there is no liner in the stock motor, just Nicasil plated aluminum. The bore can be enlarged by simply boring out the aluminum cylinder and re-plating.
     
  12. Vicbuilder

    Vicbuilder Member

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    That is correct. I guess a little is confusing with the terms. Nikasil is a lining, a process, kinda like chrome. It's not a liner or sleeve which would be a 3D part that you could put a part number on.
     
  13. spider

    spider OT-CAN

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    Ok, I guess i'm a bit confused.
    When I looked at my front cylinder, the lower portion of my cylinder, the part " without " the fins sure looked like your average " sleeve " to me.
    I'll have to look harder at the rear jug tomorrow.
    I am aware that the Nikasil is a " coating ", I was under the impression that it was a steel sleeve that was coated.
    No matter, if the Nikasil if messed up you need to bore then re-coat/re-line the cylinder or replace the jug if you are not going with a big bore kit.
     
  14. spider

    spider OT-CAN

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    I've been wrong once before, just ask my wife ;)
     
  15. Vicbuilder

    Vicbuilder Member

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    [​IMG]


    Here is pic of the bottom your cylinders. Note the area I marked with red. That is the spigot of the cylinder and about the bottom 3rd of piston travel. This one happens to be a steel liner for a big bore. On a stock cylinder that would have been aluminum cast with the rest of the cylinder as one unit and would look almost identical. On a stock cylinder the inner portion would be where the Niaksil coating is (where the piston is traveling of course). So you can't tell from the outside what bore the motor is, or if it is aftermarket steel lined or not, its all aluminum out there.
     

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