Ring gap?

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Albert70
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Ring gap?

Post by Albert70 »

Hi,
I am in the process of changing my OE piston and rings for a wiseco ,when I measure my new rings in my cylinder with a filler gauge I get 0.435mm but in my clymer shop manual for a kdx220r 1999 the spec I have is between 0.15mm to 0.35mm and the service limit is at 0.635mm
should I be worry about this or is it O.K . Anyone with similar measurement with wiseco rings...
Thanks,
GS
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Post by GS »

I have my Kawasaki shop manual open in front of me, looking in the KDX 220 supplement, it says:the gap, for a standard size ring should be .30mm - .50mm....with a service limit of .80mm.That's what it says, so?

The specs you quoted are for the 200, not the 220! :rolleyes:

Greg
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Post by GS »

Does that mean you were really freaked by your cylinder id measurements?

HAW! :lol:
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canyncarvr
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Post by canyncarvr »

I've not looked at the 220 supplement. Come to think of it...I don't have one.

For us (me) US peoples..the 200 spec is then .006-.014", and the 220 is .012-.020"?

I would have never guessed there would be that kind of difference with 3mm difference in bore size.

A restatement for verification, please? ..for both sizes? In case I missed something.

Anyone with an explanation for why such a disparity?

Thanks!

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GS
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Post by GS »

OK Crvr.....Fresh look at both the manual for the KDX200 as well as the KDX220 Supplement.

I read:

KDX200 - Standard: .15mm - .35mm........service limit is: .65mm
*applies to both top and second ring*

KDX220 - Standard: .30mm - .50mm........service limit is: .8mm
*applies to both top and second ring*

Does seem odd....with that much difference for such a small change in bore size.
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canyncarvr
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Post by canyncarvr »

I can't imagine a ring gap limit of .032", either (.8mm).

Must be 'cuz the 220 makes SO much power, losing a good lot of it past a hole you could stick your thumbnail in don't matter.

What a machine! :shock: ...and amazed.....

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Jeb
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Post by Jeb »

>|<>QBB<
canyncarvr wrote:I can't imagine a ring gap limit of .032", either (.8mm).

Must be 'cuz the 220 makes SO much power, losing a good lot of it past a hole you could stick your thumbnail in don't matter.

What a machine! :shock: ...and amazed.....
OH . . . it IS a machine, make no mistake! :mrgreen:

For the 220, though, it's not just the rings that should be replaced but the entire piston with a Wiseco setup. And the ring gap for those are considerably smaller, likely because Wiseco recognized that since the 220 makes SO much power a little bit goes a long ways, thumbnail size and all!
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Albert70
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Post by Albert70 »

You are so right my manual is for a kdx200, thank you so very much for the info now I can sleep better .thanks again. :prayer:
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