Mikuni VM 33 Carbs

Injected wrote:

I just did my initial start up on #25 pilots but its way too rich, going to drop them down to #17.5's. That air box I am running must be way more restrictive than I thought.

I am running stock air screws with the hole thru them so the setting on those would be a maximum of 3/4 turns out.

I will set my needles and mains with my portable O2 sensor and AFR gauge. Plugs chops are fun but there is always some jackass in the way!

SWest wrote:

Injected wrote:

I just did my initial start up on #25 pilots but its way too rich, going to drop them down to #17.5's. That air box I am running must be way more restrictive than I thought.

I am running stock air screws with the hole thru them so the setting on those would be a maximum of 3/4 turns out.

I will set my needles and mains with my portable O2 sensor and AFR gauge. Plugs chops are fun but there is always some jackass in the way!

You may be right about the air box. Was thinking it might be. I bought new air screws from jetsRus along with other things. Did you notice the jet holes in the bottoms? Wonder why they did that? I'll be watching what you come up with. Out here there's not much traffic in the mornings so I should be able to do them. 

 

SWest wrote:

Yes there's one in each tip.