Hello, and some questions...

[cb400]

New NC-30 owner in the US here. It's a 110 series so I believe that's a '92?

When I purchased the bike it has the carbs removed, as they were in the midst of rejetting. I took the bowls off, and everything looked nice and clean, and I believe that it has the 118/115 jet setup. It has the stock exhaust on it, and I was wondering if that jetting will be too rich?

After putting the carbs back on, the it ran like crap, and pretty much won't pull past about 6K. I made sure the speedo was connected to make sure I wasn't seeing the ignition cutout due to the limiter.

I pulled the carbs back off, and found the airscrews full in. I gave them 2.5 turns out, but haven't reinstalled the carbs until determine if I should change the jets.

What do you think?

thanks,

--jeff

[The Hamster]

I had the same problem with mine. I had it Dyno tuned Yesterday and literally all we did was re-set the Float Heights back to standard 6.8mm, and changed the Jetting from 116F/118R to 118F/120R and the bike is soo much different now. The Air Bleed Screws were set to 2.5 Turns out and now the power curve is so strong and smooth its unbelievable!!!

I would suggest you change the Jets as I have and see how it goes. As long as your Float heights are measured ot be ok, and the Air Bleed screws are turned out to 2.5 I cant see why you would have too much of a problem unless the carbs linkages are set-up wrong or they are not seated properly or have an air leak.


Hope you get it sorted soon and enjoy the bike.


Oh and 1 other question! You say its a 110 Series???? Whats that? Never heard of one of those?? Please explain im intrigued! LOL

[cb400]

The 110 series I mentioned was the VIN of NC30-110XXXX That's the only indication that it's a 92.

I seem to be having more of a rich mix problem, than lean. I'll check that they didn't screw up the float heights.

Thanks...

-jeff