Mikuni VM 33 Carbs

Here's a pic of one of them . LOUSY work. They weren't even drilled well. Lore pics later.
Steve

Here's the vac taps on the outside carbs. The inside are smaller holes and drilled off center. :sick: Poorly placed too. I plan on redoing them but I don't have a die that small. Some day.
Steve

Are the vacuum nipples easy to access on the inner carbs?

I've been riding with the opinion that an air box is preferable to pods in my BS34 application, but...
What performance effect does an air box have on these 33's or Flatslide carbs?


I had a dream. Something changed my friendly old pet into an uncontrollable ravenous beast. :ohmy:
Must be the carbs... :evil:

The air box is always preferable for all weather riding. With my 28's I could tell I was running out of gas at high speeds under load in 5th on the grade going into town. I changed the float valves from 2.0 to 2.5 and that helped. Once I got the 33's working properly kinda, that wasn't an issue. At first the way they were set up it was all on or all off. Now I can cruse through the parking lot or slow streets and when I want to get on it, it's all there. :woohoo:
The two inner ports are hard to get to so I made extensions with short tubing with nipples on the ends. As suggested here I will use solid brake line for my fittings. I can experiment with my old holders to see if I can install ports in them. If so I can have Jeff fill the holes and sync them that way. We'll see. :whistle:
Steve

Does the air box have an effect on the performance with these carbs, like smoothing out irregularities or in general making the engine run better than if pods are used? :blink:

I'm sure I'll get an argument there but think of this, at speed the air is rushing by creating a vortex in that area. As explained to me so long ago, the frame becomes pressurized allowing more air to be available to the carbs. Aside from issues of air starvation, wet conditions, carb issues, the air box is the way to go to prevent this, that is unless you're on the track doing 10 second passes. IMO
Steve

While looking at carb sync tools I found these and bought them. $10 shipped.
Steve

This is going to contradict what Patton says. This is a page out of the Sudco 5th edition tuning manual

I got mine for $100. I would never pay $3-500 for obsolete carbs.
Steve

kaw-a-holic wrote: This is going to contradict what Patton says. This is a page out of the Sudco 5th edition tuning manual

Those are the newer RS design though and not the VM series.......

Just placed a WANTED post ( #712883) in Classified :whistle:

Did you buy them?
Steve