Carb Stuff

[koko64]

http://www.nichecycle.com/ncs/mikuni/accessories/3638-1-ultimate-flow-optimizer-ufo-vm36-vm38.html

[koko64]

The company makes big claims. Looks like it should help.

Before. Turbulence from the shape of the underside of many round slides.

ufo_flow1_2 by Tony Kokonis, on Flickrz

The parts.
ncs-07021_1 by Tony Kokonis, on Flickr

After.


ufo_flow2_2 by Tony Kokonis, on Flickr

[greenmonster]

.Normal gains are 3/4 to 1 HP per 100 cc of engine displacement on 4 stroke engines and 1 1/2 to 2 HP per 100cc of engine displacement on 2 stroke engines. (Re-jetting and tuning may be required).

Sooo, 7-9 extra horsies, nice.
When will you try it, Tony?

[koko64]

That's a big claim, (and with VM carbs). The solution does make sense however.

[koko64]

Sooo, 7-9 extra horsies, nice.
When will you try it, Tony?

I'd try a TM flatslide first as they cost about the same price as a VM with that gadget.  I think that if you already had VM carbs, they are a good idea.

[ducpainter]

Notice that it requires a slide with a large cutaway.

[greenohawk69]

Mikuni Models:

Mikuni VM36 Round Slide - Flange

MountMikuni VM36-4 Round Slide

Mikuni VM38-21 Round Slide

Mikuni VM38-9 Round Slide