Hello.

I have here a NC 30 UK model.

It has different emulsion tubes (needle holders) as the Jap. version. Also different A and B needles.
Can anybody tell me what belongs in the front ( 2 & 4) and what parts in the rear (1 & 3)?

2 emulsion tubes do have a total of 10 holes, the other 2 do have a total of 8 holes.

The needles are: J1GA and J1GB.

I hope somebody can give me the answer.

Best Regards Roel.

Here my V4 hobby site. www.400v4service.nl

I posted some specs for NC30 carbs here

viewtopic.php?f=24&t=53569#p381279

st22041967 wrote:I posted some specs for NC30 carbs here

viewtopic.php?f=24&t=53569#p381279

Thanks, but my bike is a official UK bike.
So a lot in the carbs is different.



My channel:

https://www.youtube.com/channel/UCZ3lhm ... _as=public

I'm pretty.ty sure it's just a jet difference, the carbs are the same. I'm going to wait with baited breath to find out.........

As far as I've heard the only difference between Jap NC30 and U.K. Are the rads/oil pump and jets.

Edit
After a bit of searching Fowlers micro fiche there does seem to be a difference in the tube/jet part numbers but alas the are discontinued so sorry I'm not any help here. Rick'O seems to know most things that are worth knowing about NC30's.

Fowlers
UK
https://www.fowlersparts.co.uk/parts/50 ... nent-parts
Japan
https://www.fowlersparts.co.uk/parts/50 ... nent-parts

Carbs should have metal sliders too, some of this info is in the old uk nc30 thread in the general section.

UK bike has different exhaust part number too and perhaps different cams, i cant remember offhand without checking parts books i dont have here.

Been a while since I messed with any uk carbs but I think the stock jets should be 120 front and 122 rear.

the 5 hole tubes (10) go in the back, the 4 hole (8) go in the front.

Front needles are B, Rear needles are A.

Hope that helps

Neosophist wrote:Carbs should have metal sliders too, some of this info is in the old uk nc30 thread in the general section.

UK bike has different exhaust part number too and perhaps different cams, i cant remember offhand without checking parts books i dont have here.

Been a while since I messed with any uk carbs but I think the stock jets should be 120 front and 122 rear.

the 5 hole tubes (10) go in the back, the 4 hole (8) go in the front.

Front needles are B, Rear needles are A.

Hope that helps

Thanks.

I found needles and tubes on the wrong place.
But the 122 must in the front.!!

I cleaned the carbs ultrasoon in my large ultrasoonmachine.









And my V4 mancave :


This is my other project: http://400v4service.nl/rc30-rc45/

https://www.youtube.com/watch?v=DFwmV8a9HO0

https://www.youtube.com/watch?v=hyeeT8WongA

Carbs are rebuild and bike today synchronized.




https://www.youtube.com/watch?v=hXsOAYJKNgo

That's one he'll of a man cave.
Don't suppose you you be will to write a step by step guide to balancing the nc30 carbs would you?

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TURK122 wrote:That's one he'll of a man cave.
Don't suppose you you be will to write a step by step guide to balancing the nc30 carbs would you?

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I will do that. I will take pictures the next NC30 balancing-job. Then later I will make a step by step guide.
Only problem is, I'm from the Netherlands, so my technical Englisch is not so good,but I will try.

This NC30 first type 1989 was a job a while ago. (I have 4 NC30). No. 1 2 and 5. And a NC30 Suzuka OKI endurance racer

https://www.youtube.com/watch?v=pgByZCRMaCA

Here you can see the whole project. Sorry,it is in Dutch.
http://www.motor-forum.nl/forum/list_me ... tje-1.html

Building the OKI racer: http://400v4service.nl/nc30-nc35/
and: http://www.motor-forum.nl/forum/list_me ... uka-1.html

That oki build is fantastic mate.
I have 1 and 1/2 nc30's. I'm new to 4 strokes and love my nc30. Look forward to reading the balancing guide write up.
[img]https://uploads.tapatalk-cdn.com/201706 ... 1affa2.jpg[/img]

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