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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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Old 04-19-2009, 10:03 AM
101racing 101racing is offline
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Default Putting in new rings

What do u guys do when u rering the piston. We did scotch brite on 07 ktm 300 cylinder or do you hone with a special stone?

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Old 04-19-2009, 04:57 PM
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I use a 3" ball type hone.
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Old 04-19-2009, 08:00 PM
skid jackson skid jackson is offline
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Hope like hell the rings fit!!
My first top end ever .. on my 06 300 really only needed new rings ... unfortunately the rings shipped did not work in the stock piston .. it turned into a little mystery as the part number was correct and the rings inside the package were correct. They just did not like the stock piston ..I had to get a new piston and rings.
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Old 04-19-2009, 08:23 PM
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2 strokes 4 life 2 strokes 4 life is offline
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Well some people just use scotch bright but really that Nikas lining is supper strong.

To do any realy good just take it to a shop and have them use a diamond hone. It should cost $30 at max then you know the bore is straight and what not.
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Old 04-19-2009, 08:42 PM
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i thought your're not supposed to hone nikasil bores?
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Old 04-19-2009, 09:06 PM
Brian VT Brian VT is offline
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Quote:
Originally Posted by noobi View Post
i thought your're not supposed to hone nikasil bores?
It's pretty tough. Scotch-Brite ain't gonna touch it. If you have any aluminum on it, from a melt-down, then apply muriatic acid with a Q-tip to remove it. Might have to sand a bit too. When Q-tip is clean you should be set (no more aluminum). Better to get diamond honed, as stated.
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Old 04-20-2009, 08:36 AM
Eric K Eric K is offline
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Check and set the ring end gap to spec.
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Old 04-20-2009, 10:58 AM
101racing 101racing is offline
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Default Scotch brite

Did u (gasgas man) get 3 in ball hone for nikasil application and what grit did you use. I dont know if i can get diamond hone or not but i will see what my dad thinks.

Thanks for all the replies

Last edited by 101racing; 04-20-2009 at 11:19 AM. Reason: need to change
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Old 04-20-2009, 02:02 PM
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101.
The ball hone I used is just a standard 3" version.
I don't think they make different grit hones.

The idea is just to break the glaze off.
Usually, 3 times up and down will do the job. You want a 45 degree cross hatch pattern when you're done.
Use WD40 to lube it while honing.
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Old 04-20-2009, 05:09 PM
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You wont be able to afford a diamond hone. The 3 ball does nothing on these cylinders because the plating is much too hard. Plus you run the risk of making un-square. Just take it to a machine shop or bike shop.
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