MAKE NSR FASTER

[nsr_rk_boy]

can any1 tell me an easy way of making my nsr125 rk faster it only does 70 on a straight the restrictor on the exhaust has been removed, and so has the air flow restrictor in the air box.



wat difference will a race exhaust make or new bigger carb ???

[lilredmachine]

Dunno, CDI? If it is fully derestricted, it should see the fun side of 90.
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Bikes: too many, too much for one man to maintain anyway.

[fuzz]

Could possibly be the CDI if it's not already doing 90. A race exhaust might help with an extra 1-3hp but it should be doing more than 70 as standard.

Does it get to the redline in 6th?
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https://www.bikepics.com/members/fuzzbcf/
Bikes: '99 NSR125R, '00 SV650S, K1 GSX-R600, '97 CB500, K3 SV1000S, '16 VFR800

[nsr_rk_boy]

it dosent redline in 6th it revs 2 9k (on a long downhill) .....

i tried looking 4 the cdi unit 2 day as i had my bike in bits but didnt know what i was looking 4......

where is the cdi?

what does it look like?

what can i do 2 it 2 make the bike faster?

[Rookie]

you souldn't really expect much more from an old nsr, you'll just kill it.

[bazza]

[stevo as b4]

If there are no other exhaust or intake restrictions in the whole intake/exhaust system, and the throttle slide does open fully, and the engine is not worn out or knackered, then it can only mean one of two things i would say.
1, Power valves not opening/sticking or restricted. (to test this id disconnect the cables, and manually rotate the power valve pulley on the cylinder barrel fully in each direction and then go and test ride the bike to see what is happening.

2, The CDI could be restricted (especially on an Import bike) probably by means of retarding the ignition timing at high rpms, below what it needs to be for high rpm operation, thus acting as a kind of soft rev/power limiter.

Have you done a compression test, and also checked for all the simple things like a clogged air filter, or blocked exhaust system. Two strokes need a de-coke at least every 10'000miles to stop them getting clogged up with carbon and deposits that reduce performance over time.

[nsr_rk_boy]

many thanx stevo i will try the things u said do u know where i can get my cdi deristricted or where i can buy a deristriced 1 from