Hello there, I have just acquired a vfr400 NC24, it is missing the carbs and I am unable to locate any nc24 carbs for the bike, I was wondering if I was to buy a set of nc30 carbs would they fit or what adjustments would I need to make?

and what would be the ideal jetsizes for nc30 carbs running on a nc24 engine?

The NC30 carbs will fit the 24,No doubt they will need some jetting adjustments.

hunter wrote:No doubt they will need some jetting adjustments.

Any idea's what jetting it would be? I know the NC24 with a standard carb has 115's all round, would that be different with a nc30 carb or would 115's work in it the same?

Do I also need to get rubbers for the piston head or are they the same between the engines?

Welcome.

I'd get new rubbers either way - the make the fitment and removal so much easier. You'll be putting a finger in the air for the jetting, but as long as you are ballpark you'll be fine - 115s would be a good place to start

Check the part numbers

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I just jetted my carbs on my NC24, carbs are 32mm throat and I used 117.5 front and 120 rear. See my air filter post for other info.

The air circuitary in the nc24 carbs is different from the nc30 carbs, so exact jetting will be a bit of trial and error.

Anything around 115 should be fine as a base though.