NSR CDI UNIT Myth?

[Star La]

Hi

https://nsr125.com/derestrict.htm

On the bottom of this page, they mention the myth of the CDI restriction.

Now my NSR is at some garage and the mechanic basically said he will do a full service on my bike and derestrict it for free so I took him up on that offer but now he has serviced the bike, he has told me that its not possible to derestrict it because it has a computer restriction.

I need someone here to help me out cos I feel hard done by as I only went to this guy because he said he would de-restrict the bike as part of the service.

How can I tell whether my NSR is an import? I checked my registration document and it just says NSR125 - it mentions nothing about it being a RR model..

Please advise!!
Many Thanks

[alun111]

have a look at the special notes on the bottom of the front page of your V5.
____________________
Summer: '00 Honda CB600F Hornet
Winter: '93 Suzuki GSF 400 Bandit VP Variable Valve
Past Bikes: Lifan LF100-5 Lifan LF125-A Honda C70

[Star La]

I only see

1. DECLARED NEW AT FIRST REGISTRATION.

nothing else.

[alun111]

My bike's (not an nsr) V5 says:

"WAS REGISTERED/USED OVERSEAS. DECLARED MANUFACTURED 1993."

On the first inside page it says "Date of first registration 01 04 1997" "Date of registration in the UK 01 04 1997"

Dunno if this helps.
____________________
Summer: '00 Honda CB600F Hornet
Winter: '93 Suzuki GSF 400 Bandit VP Variable Valve
Past Bikes: Lifan LF100-5 Lifan LF125-A Honda C70

[Star La]

hmm okay, mine is probably not an import. I suppose I'll have to speak with this mechanic.

[Kickstart]

Hi

If it was imported new then it will not say on the registration docs that it is an import, whether Honda officially imported or Dodgy Daves Back Street Garage.

The NSR125RR bit refers to the model. The 2nd letter is the model code, effectively a year.

Hopefully Alains will be along. Find out the serial number on the CDI unit. Either way I think there are still the exhaust and intake restrictions.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[mrsteko]

Yes, Alain could tell you in a second how your bike is restricted just by giving him the frame number off the side of the stock.

Until then let me share what I know!

Check out your cdi unit and r c control unit. If the codes are CI 626 and kbs tv 78 respectively, then these are not restricted and are the good kind of black box. should this be the case, then check there is not a wire coming out of the cdi and back in again. If so, unplug. If not, then check the carb, there should be a plate behind air inlet manifold and sleeve in axhaust ( see derestrict, notes).

If your code on the cdi unit is CI639 (can't remember what the rc unit will be, but they match) then you have an electronic restriction, prob a french bike. You must then buy new black boxes, no other way, and they ain't cheap.

Hope this helps, let me know.
____________________
Theory passed Dec 05 : Practical passed 28th April '06
Bikes : 1999 NSR 125 R (sold)
: 1998 bandit 600

[moonym20]

There should be a colour code sticker on the rear subframe near the battery, that should also list the bike model

If its a UK bike and built before 2002/3 there will be no CDI restriction, if its made after that date then the CDI is restricted.

all other bikes including import NSR125 RR's will be CDI restricted


____________________
A scientist crossed a skunk with an owl. He's got a bird that smells but doesn't give a hoot

[djrichieb]

Yeah as said if your CDI says CI626 then its not restricted. If you give us the frame number you can tell which country your bike comes from. Mine is a french import and has ...JC22B.... in it. The frame number is on the yokes just under the handle bars. Mine had a CDI and powervalve controller restriction on it. Powervalve controller should read TV-78 and mine read TV-124. Powervalve controller under tank near battery.
____________________
Rides: Honda CB400 SF (ART can) - Citroen Saxo 1.1i SX

[alains]

spot on , my dear . Star La , give me your serial number (the label between the yokes and i will tell you . For the french bike the de-restriction is easy but pricely , you need to exchange CDI unit , RC/valves control unit and exhaust because it's too difficult to take the restrictors off . watch ebay everyday and look for as you said CI626 and TV-78 and exhaust pipe (jollymoto,arrow,gianelli,tyga etc...)
a good improvement can be added by upjetting , fitting carbon reeds and plug NGK BR9EIX or Denso IW27
____________________
the worst day fishing is better than the best day working

[Star La]

Thanks people for all your input, much appreciated!


The bike is miles away from me and the mechanic's number is off so I whipped out my v5 and here goes;

FRAME NO. ZDCJC22C01F240922
ENGINE NO. JC20E0087522

Here's hoping for some good news!

[alains]

your bike is a 2001 UK specs so no restriction on electronics . the only you have are : exhaust , intake plate
i will be very surprised if you still have the intake plate
you may check your exhaust for restrictions as NSR125.com said
to improve you need :
- carb upjetting as 138 (main) , 42 (slow) , 65 (power)
- fit carbon reeds
- fit BR9EIX or denso IW27 instead of you BR9ECS which is bull shit
you may download my file https://www.geneva-racing.com/~alains/NSRtips.doc
you will find how to DIY some bits and links for special spares
____________________
the worst day fishing is better than the best day working

[Star La]

Great. Now I'll have to speak with this mechanic.

When I spoke to him yesterday, he told me there was a intake plate. - my bike is unbelievably slow, top speed at around 70, acceleration is horrendous so now I'm getting this all sorted out now.

How much would a de-restricting service cost on my bike?

Thanks

[alains]

prior of taking the bike to the mechanic buy these items :
- carbon reeds ,here is a link
https://cgi.ebay.de/Carbon-Membrane-Tuning-Honda-NSR-125-CRE-CRM-CR-R-036_W0QQitemZ120144760049QQihZ002QQcategoryZ96384QQcmdZViewItem
- BR9EIX plug (or denso IW27) here https://www.sparkplugs.co.uk (you may buy 2)
- jets as 138(main) , 42 (slow or idle) ,65 (power) here https://www.dellorto.co.uk mail to mattew cooper sales@dellorto.co.uk (precise carb is 28PHBH/FD)
so when you have all bits go to your mechanic and ask him to remove intake plate (if still on) , replace reeds petals , change jets and set needle on 2nd notch from top , then fit the new plug
ask him to look if exhaust still has restrictors and to take it off if they are
when you will have money , buy a race pipe (£160-250 but sometimes second hand are in auction on ebay) best pipe is jollymoto , then gianelli,tyga ,arrow , etc...
____________________
the worst day fishing is better than the best day working

[mrsteko]

If I were you, I would be saying to the mechanic - "Give me my bike back"

He is going to charge you £30 p/h for relatively simple work that you can easily do yourself. Struggle to even call it work, the most effort you will have to put in after you buy your parts will be drilling out the welds inside the exhaust. Do it yourself man!
____________________
Theory passed Dec 05 : Practical passed 28th April '06
Bikes : 1999 NSR 125 R (sold)
: 1998 bandit 600

[Star La]

Alains;
My bike was already with the mechanic so I couldn't buy parts beforehand. I noticed his prices were about 5-10 pounds more than your list prices but I guess that's just business and a bit too late for me.

I'll have a look out for race pipes but to be honest, I'm looking to sell my bike towards the end of winter for a CBR 600

mrsteko;
Where I live, it's not really convenient to do some DIY on my bike but I do agree with you to a certain extent because when I first had my NSR, the carbs would flood and not knowing how to deal with this, I use to get the RAC to take it to the garage and they'd tell me all sorts of stuff which I know realised they were taking me for a ride (no pun intended!)

I've had a lot of bad experiences with mechanics around East London, I think ROGUE TRADERS would have a field day here..

anyway I'm due to pick up my de-restricted NSR tomorrow so I'll let everyone know how it goes.

Thanks for all your help people. much appreciated.

[Star La]

Hi,

I bought this exhaust;

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=320170753719&ssPageName=STRK:MEWN:IT&ih=011


any good?

Thanks

[alains]

yes it's a similar to jollymoto slightly lower quality but you will find nearly same performances . fitting is the same as jollymoto (floating attachment) . it should come with an aluminium flange with a rubber Oring fitting inside , 2 springs, 1 silent-block , 1 collar (for can fixing) , 1 gasket (pipe-can) . if you've got that download my file https://www.geneva-racing.com/~alains/NSRtips.doc , mounting instructions are on page 4 .
prior of mounting it , i recommand 2 lays of High temperature paint in order to protect against corrosion , even they are normally covered with a special varnish (a tin spray is enough , i use black which fit any bike). to ease paint grip , use a sheet of 220 sand paper and just strip slightly the varnish
____________________
the worst day fishing is better than the best day working

[Star La]

Hi,

Okay so after 5 weeks I finally got my exhaust from Germany. The wait was a joke..

I took it to my local garage and they did it within a few hours (great service! Essex Road, London) -



Bike is louder as I expected anyway, but I must admit I was somewhat disappointed. I didn't expect 500c speed but the acceleration time wasn't as much of an improvement as suggested on the NSR125.com website. The bike does go about 20% faster in gear 2 upwards.

I asked the mechanic about cutting a hole on the airbox but he said it should be okay.. ? - I read in the nsr.doc that it should be done.. hmm.. I don't really like telling more experienced people what they should do so I thought I'd just leave it.

This will keep me satisfied until I apply for my A Licence in the coming months and get my CBR 600 RR

Thanks alains for your comprehensive help. Much appreciated. thanks everyone else for your input.