I'm working on a set of NC24 carbs at the moment, as people who are familiar are aware the slides are the same ones used in the NC30 HRC set-up.

They have a curved bottom and have 2 holes instead of 1. (they are also fitted with 8ZC's as opposed to HRC items obviously..)

Anyway, I was wondering if enlarging these holes slightly would improve throttle response, since there are already 2, or is it likely to break something.

-Edit-

Can anyone confirm that the pilot screws go... [Screw] - [Spring] - [Washer] - [Grommet] as I don't have any service books here at the moment and thats how I always put them together, however the screws in these carbs go [Screw]-[Grommet]-[Spring]-[Washer]

I'd not recommend it as there's already the 2 holes there. I doubt it'll improve the trhottle response much more than you already have.

Many thanks, i've updated the thread to now include a question about the pilot screw :)

screw, spring, metal washer, O-ring (O-ring further from the screw end)

Thanks for confirming that. It's how I assembled them anyway.. two of them were backwards (mind you I'd had a lot of beer and it was late the other week when we were assembling them)

Can't tell if the washers have made a difference yet as I broke a wire on Coil #1 and my repair must be suspect as it's intermits between 4 and 3 cylinders giving you a jerky ride (as I found out half way down my fave country lane)

Back to the drawing board tomorrow :)

Neosophist wrote:I'm working on a set of NC24 carbs at the moment, as people who are familiar are aware the slides are the same ones used in the NC30 HRC set-up.

They have a curved bottom and have 2 holes instead of 1. (they are also fitted with 8ZC's as opposed to HRC items obviously..)

Does anyone know which NC24 carb slides have the curved bottom mentioned above as there are two different part numbers according to microfiche:

16111-ML0-724 & 16111-ML-0004

cheers

I`ve managed to get my hands on some NC30 carbs which have HRC slides and springs in them.

I have access to the services of a very good spring manufacturer so it would be no problem to get the springs replicated but is there enough interest to justify the investment?

Provisional price would be around £22 for a set of 4 - if anybody would be interested please drop a note on here so I can gauge potential demand.

See elsewhere on this forum section for a similar question concerning clutch springs...

Rick

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