NiKaSil lined cylinders

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

  1. hogwild
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    hogwild New Member

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

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    yes
  3. iabob
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    iabob Active Member

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    I do too!
  4. FlaMike
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    FlaMike Member

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    I didn't but do now.
  5. keithgrey
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    keithgrey Active 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
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    spider OT-CAN

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    I'm sure.
  7. spider
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    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
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    Vicbuilder New 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
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    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
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    Vicbuilder New 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
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    bikendad Active 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
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    Vicbuilder New 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
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    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
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    spider OT-CAN

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

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    old i know, but cold + snow = research time. just read on BMW bikes how durable nikasil is. usually outlasting pistons + rings and its recommended not to hone or bore ever, the crosshatch just stays there. unless more CC's are wanted of course. its been around a long time as well as similar coatings and cylinders are said to be very stable + dissapate heat better than iron liners
  17. UK_Paul
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    UK_Paul Active Member

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    I know now, too.
  18. saddlebag
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    saddlebag Active Member

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    Ifit's applied properly, I suspect so.I had aNikasil lined Kaw 1200 that lost the coating in two cyliners at 14k miles. A local place replated and I was told they guaranteed their work the life of the bike.I onlyhad it another 20k miles or so after that, but it had no further issues.
  19. DirtyTwin
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    DirtyTwin New Member

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    I too now know tee hee hee!
    it's the simple things in life a'int it?
  20. Oldman47
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    Oldman47 Active Member

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    I think this brings us full circle to Lloydz's advice about warming a cold engine vs the break in recommended by others. His statement that the nikasil treated cylinders do not break in the same way as an iron liner and that the aggressive break in suggested for most engines is just plain wrong for a treated aluminum cylinder sure puts things in perspective for me.

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