Type of Mikuni insulator

[Z-point]

Hi everyone,

Here I have a picture of my carb, you see there’s a ‘hole’ in the outlet (to the manifold).

Can anybody tell me why is that for? Secondly I received a mail with the following kind of insulator, (second picture)! I presume this is a new type of insulator with a rubber seal in it, because normally you only see the aubergine coloured insulators? But why is the ‘island’ for and is it a correct type.

I mailed Toysport but they did not have any left, "hope to get some in the future"…

Does anybody know another address to buy?

[JLPurcell]

Here I have a picture of my carb, you see there’s a ‘hole’ in the outlet (to the manifold).

Can anybody tell me why is that for? Secondly I received a mail with the following kind of insulator, (second picture)! I presume this is a new type of insulator with a rubber seal in it, because normally you only see the aubergine coloured insulators?

You might want to try Wolfcreekracing.com for Mikuni parts.

To try and answer you queston, I have the older style Mikuni carbs but I believe that the extra hole in the carb is for the Idle air, not sure. The insulator block pictured is the new style anti-vibration insulators, a rubber o-ring fits in the cut out in the insulator to form a seal and cut down on vibration transferred to the carbs from the engine.JLP