NSR 125 R Foxeye

[HardBoiledEgg]

i have a NSR 125R Foxeye, frame number: ZDJC22B01F243154 to my knowledge it is an import from which country i a unsure.

The bike when cold really splutters but seems to get better as the bike gets warm after around 5K, I have tryed to replace the air intake valve on the choke, cleaned the cable but still sees to do the same on starting in low gears.

what would i have to do to de restrict this also what would i need to do at it to prevent it choking up on cold starts?

The plug it has in, is NGK BR9ECS could this be the proble or is the choke still failing to close after opening although it has been cleaned and the choke piston replaced.

also if i remove the intake restriction to i have to alter the needle valve (jet) for the carb.

thanks in advance
chris

[Blunet600]

umm do you need to adjust the needle when u derestrict the intake? because i am going to derestrict my bike (nsr125r) and its restriction is at in intake, but i never knew or was going to adjust the needle?

[HardBoiledEgg]

As far as i am aware all i need to do is complete the following.

https://www.nsr125.com/derestrict.htm

but my opinion there is something wrong with my carb. but i have read on some imports they are restricted in other ways, RC - the throttle plate the CDI etc... not sure thats why i attached my frame number.

[alains]

no this site is good with the UK models but not with imports
your bike is a 2001 import FRANCE . de-restricting this bike is not so easy as you think . sure you can do the basic intake and up-jetting , but plenty of other things to do .
BASICS
- take off the intake plate (you've done that) and fit carbon reeds
- de-restrict or change exhaust system *
- fit BR9EIX sparkplug
* the restrictor is about 8" down in the pipe and the pipe needs to be cut down to take off the restrictor , then resoldered with oxyacethylenic torch and soft steel . so better to buy a jollymoto or gianelli exhaust pipe
ELECTRONICS
both CDI and RC/valves control unit are restricted and need to be exchange with UK or italian specs models
actually your CDI is marked CI639 and you need a CI626
your control unit is marked TV-124 and you need TV-78
the best is to watch on ebay when people break foxeye bike and ask seller how they are marked .
changing them do not need any modification except for the CDI which need to reverse the green and the black/yellow onto the 4 wires connector coming out of the loom
you will find any exponation in my file
https://www.geneva-racing.com/~alains/NSRtips.doc (1Mo)
if you want further infos send me a pm
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the worst day fishing is better than the best day working

[HardBoiledEgg]

Please tell me your joking.


your not though are you?

by the way whats a carbon reedblock and upjetting?

[alains]

i am not joking and i know what i am talking about . my bike was a RW (1998) and it's fully de-restricted now and it's a general problem here in france . i explain : in 1993 after the government reform the ridding licence , the 125cc were restricted at 15Hp so honda in order to respect the law has restricted the bikes and on my forum after 2 years of studies and research we establish a way of how to de-restrict your bike . i write this file to show the differences and what to do
for the question of the reeds . the reed block do not change , you change only the genuine membranes (fiberglass) by carbon made (3 selt-taping little screws on each side)
about upjetting : if you de-restrict your bike it's for going up in the RPM and the enemy of a 2 strokes is a lean mixture (seizure secure at high revs) , so to compensate you need a richer mixture . the genuine jets are (order:main,idle,power) 132,38,55 . upjetting is to fit 138,42,65 , throttle needle on the second notch from the top
i explain
- main jet is efficient between 2000 and 9000 RPM
- idle (or slow) jet works under 2000 RPM
- power jet works from 9000 and over
if you need further question .............
____________________
the worst day fishing is better than the best day working

[HardBoiledEgg]

i've seen the cabon block and the membranes but where do i get the jets and where are they replaced, but again even though the exhaust is still restricted would these alterations improve or reduce the running effectiveness of the bike, as stated the bike is running like poo! i have just replaced the corroded choke piston, just ordered the o ring, but can add to my order the other pieces from dellorto if i new which they where.

could you assist a little more

[alains]

no problem . if you intend to run with you restricted exhaust mail to mattew cooper sales@dellorto.co.uk and order :
carb 28PHBH/FD
- 1 main jet 135
- 1 slow jet 42
- 1 power jet 60
that's all you have to tell him (he knows, i've done that at least 15 times for my mates) even you can phone (number is on the site)
if you intend to de-restrict or buy race exhaust do the same with
138,42,65
always set needle on the 2nd notch from top
yes , carbon reeds, upjetting,irridium plug will make your engine running smoother
____________________
the worst day fishing is better than the best day working

[HardBoiledEgg]

the carbon reads could i purchase those also from dellorto if not from where, also why not use race jets on a restricted exhaust since that will get changed when i get around to that, would it make any difference at all to fit 138,42,65.

what is de-coking what does it entail, all i have amongst service history is servicing which to my knowledge is oil water and airfilter but cost £100 and something pounds

[alains]

the carbon reeds cannot be bought from dellorto , i can order from my french site if you want . all i need is your name & adress a paypal wire of 50 euros . send me a pm if you want them , i will give you my mail adress . if you want to see my french site
https://www.blue-oil-france.com/default.php?cPath=210&sort=3a&page=2&osCsid=6914a557fe648eaf8696a34cebb5912d
to the price you add 9.5 euros for shipping and 2 euros for paypal fees
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the worst day fishing is better than the best day working

[puremagic72]

I take it you mean carbon reed petals??

Does the steel stopper have to go back on afterwards??

Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[alains]

normally it seems to me that the exact name for petals is membranes . about stoppers , yes of course , and put a slight drop of loctite in each hole before screwing , this will secure the screws inside the block
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the worst day fishing is better than the best day working

[HardBoiledEgg]

just been to a bike mechanic he says the vibrations arenormal its just how i choose to ride the bike, he talked me through the ergonomics of the bike ride with both hands on grips, dont float fingers over the clutch, pack some lead in the bar ends to reduce the resonnance of the bike as for NSR noises wear ear plugs a honda dealer says sounds like the crank shaft £200 labour and then the parts.

the guy at the bike shop said, take it away bring it back when the engine dies. wear ear plugs..

how realistic is this, what damage could the crank shaft cause?

[alains]

he was not far from the reality due to the mileage of the bike , but putting led where he said will not resolve the problem , but i think he is right about the crank (too much side play on the conrod and may be the crank bearings end of life)
think about my last PM
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the worst day fishing is better than the best day working

[puremagic72]

So the membranes(petals) are supposed to be replaced by the carbon ones, i think their white'ish in colour(the original membranes).

Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[alains]

yes indeed
____________________
the worst day fishing is better than the best day working

[puremagic72]

OOOpppss, i left my stopper out then!!!

Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[puremagic72]

So wats the symptoms of not having the stopper in??

Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[alains]

you are asking me too much !! never happen to me or anyone else , may be membranes broken within an undefined period
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the worst day fishing is better than the best day working

[code guru]

yer the reeds r plastic. might get this set click here or this set click here and how long does it take 2 recive the reeds if i order them from that french website?

[alains]

i order it by phone and they are shipped to you directly , price is 39euros+9(shipping)+2(paypal fees) total 50 euros which is £32ish
and i can tell that those are perfect for the NSR (about 30 members of our forum bought them and are happy) . process is simple , you pass me a pm , i give you my mail adress , you wire 50 euros through paypal , and you will receive them within 10 days (depense on royal mail dispatching) . i bought 3 or 4 (dont remember) for mates of this forum & 125ccsportbikeforum
i am not a pro , i do that just to help !
____________________
the worst day fishing is better than the best day working

[puremagic72]

I only asked bout the stopper because i think i left mine out!!!

Will it do any damage?

And as for the carbon reeds, i would go for Boyesen power reed petal set.

But Alain would get them for you, if its wat he recommends, then they must be good.

Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[alains]

it's up to you , boeysen are better for dirty bikes not for nsr .
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the worst day fishing is better than the best day working

[HardBoiledEgg]

[alains]

i have an agreement with the boss , due to the small package he agrees that 19 euros shipping (UK) is far too much . so i order them myself then i put name & adress of delivery and the postage price is the same as for me (10 euros) total 47 euros with fees and phone it goes to 51 euros . as nothing is free , i add 1 euro symbolic , so if you want a set pm with name & adress , i will give you my mail for my paypal account . note that you will not be the first ordering from me , and i have no complain yet , it takes generally a week to be delivered
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the worst day fishing is better than the best day working