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NSR125 - Jet Sizes - Ditching Airbox for a K&N

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garth
World Chat Champion



Joined: 15 Dec 2004
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PostPosted: 15:34 - 27 Sep 2011    Post subject: NSR125 - Jet Sizes - Ditching Airbox for a K&N Reply with quote
Hi

Getting way ahead of myself but always useful to know.

I dont have the space for an airbox on my nsr/cub thing. Done a quick google but not come up with much.

Does anyone know what size main jet I will need with a cone filter / foam / pod filter on an NSR125?

Full power, standard exhaust.

Thanks in advance

Cool
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dave123321
Two Stroke Sniffer



Joined: 07 Sep 2011
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PostPosted: 15:39 - 27 Sep 2011    Post subject: Reply with quote
https://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=NSR%20JET%20KIT&CategoryID=2&PartsectionID=24


be sure your car b is a dellorto phbh carb. 28mm i think.
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garth
World Chat Champion



Joined: 15 Dec 2004
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PostPosted: 15:52 - 27 Sep 2011    Post subject: Reply with quote
Is that not just for derestricting?
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ClockworkJesu...
Nitrous Nuisance



Joined: 31 Jan 2011
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PostPosted: 16:15 - 27 Sep 2011    Post subject: Reply with quote
The standard rule we've always followed for 2strokes is, per modification just go up 10 sizes. Or 15 if you wanna be extra careful.

Always better to run rich than lean.
Don't know if the NSR follows any specific rules, but yeah. Thumbs Up
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Livefast123
Nearly there...



Joined: 15 Mar 2010
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PostPosted: 17:00 - 27 Sep 2011    Post subject: Reply with quote
Standard derestricted NSR main jet is 148 so I would say start off with a 158, then get a plug chop done and see where you go from there.
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