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post #1 of 8 (permalink) Old 02-23-2010, 07:32 AM Thread Starter
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std bore install?

This may be a dumb ?, but doesn't the cyl walls have the shape of the old pistons,and rings? Won't you need to hone the cyl to make them round again before a std bore install?
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post #2 of 8 (permalink) Old 02-23-2010, 07:40 AM
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If it ain't broke don't fix it!
Do you have many hours on it or any engine problems, burning oil??? If it was running good then I would leave it alone, honing could give you problems and if you can still see nice cross-hatches in the cylinder walls you could ruin them buy honing. Most factory jobs are very nice now. Also, honing will not make it round, it may even make it more out of round, if the cylinders are out of round you are going 840!

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post #3 of 8 (permalink) Old 02-24-2010, 11:02 PM
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Quote:
Originally Posted by rockfish View Post
This may be a dumb ?, but doesn't the cyl walls have the shape of the old pistons,and rings? Won't you need to hone the cyl to make them round again before a std bore install?
If you don't have a cross hatch you could give it a lite hone job if you have someone with a diamond hone.Chances are if the cross hatch is gone it's time to go bigger. However most of the time I have good used cylinders I trade out, plus $100 shipped.
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post #4 of 8 (permalink) Old 02-25-2010, 07:25 AM
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Question seems like he's asking, to me is how can you use the same cylinders with the Standard Bore?
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post #5 of 8 (permalink) Old 02-25-2010, 08:41 AM
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Question seems like he's asking, to me is how can you use the same cylinders with the Standard Bore?
Because the nicasil doesn't ware out like a cast steel sleeve.They are so hard most of the time the cross hatch is still there showing they are still good. And if the are not a lite hone will put the cross hatch back in and they are ready to go. And if they are going with my pistons or Wiseco's shelf piston you can run more clearance then a stock cast piston if you have to hone it more to get any scratches out.
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post #6 of 8 (permalink) Old 02-25-2010, 09:07 AM
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Kawie's cyl's are weird... If you take a part a motor thats been run through some miles but never had any dirt run through it the cylinder will look fine but have no cross hatching... Take a Honda Rincon cylinder after the same amount of miles and it will still have cross hatching. When you get them back from mellinium for an 840 and you have to pull it down again for any reason it will keep the cross hatching.

I always just use a flex hone and put a cross hatch back in it real quick... doesn't take much.
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post #7 of 8 (permalink) Old 02-25-2010, 08:27 PM
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I ran nearly 80 miles without a filter, the plenum and butterflies in the T/Bs were thick with dirt but when the motor was tore apart we found there was no damage, cross hatches were still good and the Teryx is still running great after 300 more hard miles added to it. What I am saying is the Kawie cylinders are very very hard.
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post #8 of 8 (permalink) Old 02-25-2010, 08:42 PM
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Quote:
Originally Posted by FUELATV View Post
I ran nearly 80 miles without a filter, the plenum and butterflies in the T/Bs were thick with dirt but when the motor was tore apart we found there was no damage, cross hatches were still good and the Teryx is still running great after 300 more hard miles added to it.
On purpose?...
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