NOVI CARB Help

[///M5]

I have a set of 48mm D-Booster Novi Carbs, and there is a recess in the throat that was filled with something. Whatever was in there is gone, and I want to find out if this hole needs to be filled or is it safe to run like this?

-Pic 1 shows a carb with no filling.
-Pic 2 shows one with the filling partially there.

Thanks,

 

[Dartman]

your fine as long you have the stock rubber gasket on the fuel pump plate

 

[///M5]

your fine as long you have the stock rubber gasket on the fuel pump plate

What do they do, and will I be alright if I run OEM fuel pumps?

 

[speedysprocket]

Those carbs are looking rough... I think that filling is only to cover that recess and reduce turbulence that it might have caused. That hole should still be sealed with the metal plug in there.

 

[///M5]

Those carbs are looking rough... I think that filling is only to cover that recess and reduce turbulence that it might have caused. That hole should still be sealed with the metal plug in there.

Thanks, that's all I needed to know. I will fill them again if they are supposed to be plugged up anyway.

The carbs are actually in pretty good shape. Just some light corrosion that will come out without much work.

 

[Dartman]

the plug is a manufacturing access hole from mikuni to drill low speed holes in the opposite side of the bore and done before the throttle assembly is installed

 

[///M5]

Thanks for the info. Now I am going to fill the hole to smooth the airflow. I will for sure use something soft in case it comes off when the motor is running.