NC23E in NC39 frame

Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Post Reply
BlueTec
Settled in member
Reactions:
Posts: 7
Joined: Fri Sep 05, 2008 10:23 pm
Location: Dublin, Ireland
NC23E in NC39 frame

Post by BlueTec » Fri Sep 05, 2008 10:32 pm

Hi everybody,
I have just joined the forum.
I recently bought an SF2 Hypertec, 2002 vintage.
The engine code is NC23E, the frame code is NC39.
I am currently trying to locate a restrictor kit for the bike.
F1 International have a kit for the CB400 NC31 only.
They also appear to have a kit for NC23 (CBR400).
From a previous topic, am I correct in thinking that NC23E and NC31 are technically the same, and that the F1 kit for NC31 should be suitable for NC23E ?

Any help or suggestions welcome.

DerSchlang
Settled in member
Reactions:
Posts: 11
Joined: Wed May 28, 2008 8:49 pm
Location: Russia, Moscow
Contact:
Re: NC23E in NC39 frame

Post by DerSchlang » Tue Sep 16, 2008 8:38 pm

A kit? What for?
You only need to connect 2 wires near speedometer!

BlueTec
Settled in member
Reactions:
Posts: 7
Joined: Fri Sep 05, 2008 10:23 pm
Location: Dublin, Ireland
Re: NC23E in NC39 frame

Post by BlueTec » Fri Oct 17, 2008 9:34 pm

Thanks for the reply.
I just logged in again today.
Could you tell me which two wires to connect?
I don't have a wiring diagram for the bike or a service manual and it would be useful to understand the electrical system layout before trying anything.

At some stage I might attempt to "reverse engineer" the electrical system, using a multimeter to map it out. I reckon it could be similar to the CB500.

User avatar
superfourben
Settled in member
Reactions:
Posts: 102
Joined: Sat Apr 05, 2008 10:45 pm
Location: Brighton & Hove
Re: NC23E in NC39 frame

Post by superfourben » Sat Oct 18, 2008 1:06 am

Bit of confusion, you want to restirct the bike to 33bhp...yeah? This can only be done by putting the washers into the carbs and getting the certificate to say so... which is a restrictor kit. What der schlang is talking about is the inbuilt restricter that stops the bike doing above 180kph which is inbuilt into the bike in Japan. This can be bypassed very simply with a certain restricter across two of the wires in the clocks that I can't remember. :)

BlueTec
Settled in member
Reactions:
Posts: 7
Joined: Fri Sep 05, 2008 10:23 pm
Location: Dublin, Ireland
Re: NC23E in NC39 frame

Post by BlueTec » Sat Oct 18, 2008 6:54 pm

Yes, I want to restrict the engine power output to 33bhp. I don't want to bypass the inbuilt restrictor.
I understand the procedure for doing the mechanical restriction, as you have outlined...
I have spoken to F1, and alas they don't supply a kit for the NC39. http://www.400greybike.cc/newforum/post ... =32&t=3449#" onclick="window.open(this.href);return false;
:( (in case you're wondering, my bike is a HyperVtec Spec II, manufactured 2002)

I suppose I should say that when I bought the bike a few months ago I didn't check first of all to see if a restrictor kit is available. F1 can supply a kit for the NC31 (pre 1999) but not for NC39. http://www.400greybike.cc/newforum/post ... =32&t=3449#" onclick="window.open(this.href);return false;
:oops:

User avatar
superfourben
Settled in member
Reactions:
Posts: 102
Joined: Sat Apr 05, 2008 10:45 pm
Location: Brighton & Hove
Re: NC23E in NC39 frame

Post by superfourben » Sat Oct 18, 2008 10:07 pm

As a starter, have you tried contacting worlds end motorcycles http://www.wemoto.com" onclick="window.open(this.href);return false; who may know of a different supplier for a restrictor kit, alternatively Graeme France who is a member here and is quite well known might be able to point you in the right direction.

BlueTec
Settled in member
Reactions:
Posts: 7
Joined: Fri Sep 05, 2008 10:23 pm
Location: Dublin, Ireland
Re: NC23E in NC39 frame

Post by BlueTec » Tue Oct 21, 2008 12:37 am

Thanks for your help.
8-)

poshman1
Settled in member
Reactions:
Posts: 11
Joined: Tue Oct 21, 2008 5:03 pm
Re: NC23E in NC39 frame

Post by poshman1 » Tue Oct 21, 2008 5:43 pm

I had the same thing when i bought my vtec spec superfour. As far as im aware there is no way of restricting this bike because of the nature of the vtec. So just rode for 6 months on an invisable restictor untill my . Insurance might be funny with you if you have a smash. Most people i know put restrictors in take them out anyway. Good luck


Post Reply

Return to “Superfour - Workshop”