[joosep90]

Hello !

I had put a new RC Valves Control Unit (TV - 78; unrestricted) and a new CDI (CI626; unrestricted)
Other parts e.g. exhaust, jets, reeds are stock. Max speed is 120 km/h and I can't get over 11000 rpm.
So, maybe there is someone, who can tell me what could cause it

I hoped that I reach at least 150 km/h.

Looking forward to Your answers,
Joosep

 

[Brian]

How stock is the exaust? Is that still restricted? And the intake manifold restrictor plate is taken out? Also if you had to change your CDI i presume its a european bike which means the exaust restrictor is about 7 inches down the pipe and not visible...

You should change your jetting to 138,65,42...maybe your reeds too...

If it is a european bike asainiard should be able to help you out more than i can...he should be on later...

My bike reached 90mph fully restricted and around 105-110 after...

 

[danrs125]

ur problem is tht ur bike is an honda nsr. they aint a fast bike.i dnt think there would b anything wrong on ur bike

 

[Brian]

Hey mine hit over 170kph in standard form...something is up!

 

[loki_reborn]

danrs125 Posted Today, 06:45 PM
ur problem is tht ur bike is an honda nsr. they aint a fast bike.i dnt think there would b anything wrong on ur bike

haha, new rs monkey posting in the nsr section with inferior knowledge.

an nsr will quite happily sit with or cane an rs from a standstill mate. its not until the sixth gear that the rs comes into its own as sixth is an overdrive on the nsr

 

[joosep90]

The exhaust may have the restriction about 7 inches down the pipe.. But how to identify it ? It isn't visible, is it ?
And how can I remove it ? I guess the best option is to buy a full jollymoto system, right ?

If anybody could comment my questions, I would be very grateful.

 

[Brian]

The exhaust may have the restriction about 7 inches down the pipe.. But how to identify it ? It isn't visible, is it ?
And how can I remove it ? I guess the best option is to buy a full jollymoto system, right ?

If anybody could comment my questions, I would be very grateful.

I think you could check with a piece of wire of something...maybe like a cloths hanger,stick it down the pipe and if it hits something its restricted... Youll have to take the exauast off to do this mind...

To remove requires you to cut exaust open,take it out,and then weld back up...bit hard

If thats the reason for lack of power it would seem so...you could get a tyga if your low on funds,but i dont know where ya can get one,maybe Loki can fill you in there? I have the a Jolly Moto full system

 

[asaniard]

de-restricting exhaust is not so easy , you need a oxyacethylenic torch with soft steel as charge . look at the picture http://www.geneva-racing.com/~alains/potm.jpg . introduce a piece of wire by the exhaust entry , after about 8" you will be stopped by the restrictor . take out wire and report the length outside to mark approx position of the restrictor . your mark must be a cross to refit perfectly the 2 halves . with a steel saw cut down the pipe as vertical as possible . when finish you will see the restrictor , knock it off then re-solder the 2 halves with your mark on line . that's it
an other question : do you take off the intake plate between the reeds block and the carb ? if not take it off
if yes do you still have the white plastic block inside the block reeds ? if not you must fit one because it's a guide for the mixture going in the carter-motor
mind to fit all contact surface in the intake with sealing paste

 

[yellow_blackbird]

buy an aftermarket exhaust. guianelli still stock them for the nsr. or look on ebay or something.

also isnt there an airbox restriction AND a sprocket 'restriction' on the nsr?

when i say sprocket i mean its smaller than the satndard de-restricted version

 

[asaniard]

certainly boy , but is he going to spend ?200 or ?250 ? that is the question (also gianelli is not the best pipe !)

 

[joosep90]

I certainly will buy a jollymoto exhaust system, when I get enough money for that. But I think twice about cutting the exhaust, because can only the exhaust restrictor limit top speed around 120km/h and top revs to 11000 rpm ?

There wasn't the intake plate for sure. And the white block is in the place, where it has to be

And does the price ?250 include the full j-moto exhaust system, or just the silencer (carbon) ?

 

[Brian]

This white block...where is it? I cant recall seeing one...maybe I wasnt payin attention... Is it in the reed block or after?

I certainly will buy a jollymoto exhaust system, when I get enough money for that. But I think twice about cutting the exhaust, because can only the exhaust restrictor limit top speed around 120km/h and top revs to 11000 rpm ?

There wasn't the intake plate for sure. And the white block is in the place, where it has to be

And does the price ?250 include the full j-moto exhaust system, or just the silencer (carbon) ?

Yeah its the full price includin the silencer...

 

[asaniard]

brian , this plastic pyramid is inside the reed block as show the cross on the picture http://www.geneva-racing.com/~alains/reedblock.jpg
and for our friend the intake plate (restrictor) is N? 3

 

[Brian]

My bike doesnt have that...but its always ran fine...

Well I dont recall it when changing the reeds... Ill check today when Im putting in the new top end...

 

[asaniard]

this plastic bit is important . it works as a mixture guide when intake which is round becomes square and avoid turbulences in the intake

 

[Brian]

Never seems bad though...

 

[joosep90]

I still haven't got information about about the revs (rpm or whatev.). The limit is 11000 rpm and I thought that the new CDI had to unlimit the revs ?

 

[Brian]

Cos you dont have the power to do it...

 

[joosep90]

It seems strange, but ok.. I'll check that exhaust thing, when I get time for it.
Thanks everyone for the help anyway

 

[macey nsr125r]

i can solve your top speed problem mate, save some money maybe get a better job and then get a 250cc or maybe a 4 stroke 400

just came to mind, so thought id share it