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NSR125 problem reving and top speed

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kaithcsgo
L Plate Warrior



Joined: 23 May 2020
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PostPosted: 21:25 - 23 May 2020    Post subject: NSR125 problem reving and top speed Reply with quote
Hey, i have an NSR 125, carb upjetted 138,42,65 , carbon reeds, airfilter stock in original case, the restricted plate from exhaust and intake is out, iridium plug BR10EIX sparkplug, engine rebuild 1000km ago (piston wosnner, gaskets etc).

The problem is with an full 13.5L tank, i do only 160-180km, he is revving good untill 3rd gear, 1th gear - 50 km/h, 2nd gear - 80 km/h, 3rd - 105 km/h, and after that at 105km/h is stopping reving and increase in speed.

Can someone tell me what should I do ?
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Easy-X
Super Spammer



Joined: 08 Mar 2019
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PostPosted: 21:40 - 23 May 2020    Post subject: Reply with quote
Can't say I know much about this particular Honda but could there be a limiter you've missed on the CDI?
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter
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xX-Alex-Xx
World Chat Champion



Joined: 12 Sep 2019
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PostPosted: 21:49 - 23 May 2020    Post subject: Reply with quote
Easy-X wrote:
Can't say I know much about this particular Honda but could there be a limiter you've missed on the CDI?


According to this website, the UK bikes aren't restricted on the CDI, just the imports.

https://www.nsr125.com/derestrict.htm
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DILLIGAF
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kaithcsgo
L Plate Warrior



Joined: 23 May 2020
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PostPosted: 21:50 - 23 May 2020    Post subject: Reply with quote
what do u mean Easy-X, what can i check ?
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xX-Alex-Xx
World Chat Champion



Joined: 12 Sep 2019
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PostPosted: 22:09 - 23 May 2020    Post subject: Reply with quote
kaithcsgo wrote:
what do u mean Easy-X, what can i check ?


Is your bike imported or UK spec?
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kaithcsgo
L Plate Warrior



Joined: 23 May 2020
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PostPosted: 10:25 - 24 May 2020    Post subject: Reply with quote
i dont know..
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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 10:37 - 24 May 2020    Post subject: Reply with quote
The fact the speeds are quoted in kph this indicates it's not a uk bike.
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kaithcsgo
L Plate Warrior



Joined: 23 May 2020
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PostPosted: 12:54 - 24 May 2020    Post subject: Reply with quote
so i need to change the cdi and unit valve controller ? can someone post me some links ? i dont find.
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stirlinggaz
World Chat Champion



Joined: 22 Jul 2007
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PostPosted: 20:15 - 02 Jun 2020    Post subject: Reply with quote
kaithcsgo wrote:
so i need to change the cdi and unit valve controller ? can someone post me some links ? i dont find.

Hi,
Just skimmed through this & presume your meaning the Full Power cdi & rc control box?
CDI is CI626
RC box is TV78
Just sold a set.
btw, did you say what exhaust you have? (makes a difference)

cheers,
GAZ
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