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Discussion Starter #1
can u bore the stock cylinder? is it possible even with the nikasil coating on the liner?? or does it ruin it all together and you need to resleeve it?? just curious
 

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the plating helps displace heat better then a steel sleeve
it shouldnt be bored out unless your installing a new big bore sleeve or installing a cheap steel big bore kit,,,which would needed to be replated anyway,,,,,either way nikasil is the way to go
 

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it makes me wonder why the big engine builders are selling the steel sleeve bigbores instead of encouraging re-plating the cylinder after having it bored out?
 

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Discussion Starter #5
does it hurt your engine if u don't run the nikasil cylinder? and does anyone know of a place that can re-coat it with nikasil after it has been bored?
 

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Supposedly, any Suzuki dealer can send it out for Nikasil for you.
 

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On the sleeve there are two ways to go. The cast iron liner or nikisil. The nikisil is not chrome, the liner is Aluminum and than is coated. You can send it out to have redone. if you Bore the stock liner you may have issues with the thinkness of the sleeve when your done.

Nikisil is coated on the inside of the sleeve and allows better heat transfer to the cooling system. This is a good thing. In a big bore kit you may see new sleeves that may require you to do some case work, this will allow for a thicker sleeve and reduce the chances of sleeves distortion.

If you go with Iron it will save you some cash though, you may also need to tell the parts guy so he give you the correct rings.

Smitty
 

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With the 440 there is enough sleeve to bore then replate. The nikasil allows for tighter clearances and dissapates the heat better. They also resist wear much better.
 
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