Mikuni VM 33 Carbs

  • daveo
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Re: Mikuni VM 33 Carbs

17 Nov 2016 18:58
#748190
:huh: What difference does lowering the fuel levels make?
1982 KZ1100-A2

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Re: Mikuni VM 33 Carbs

17 Nov 2016 20:18
#748194
Leans out the mixture.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Mikuni VM 33 Carbs

18 Nov 2016 03:23 - 18 Nov 2016 03:57
#748205
daveo wrote: :huh: What difference does lowering the fuel levels make?

The carb is designed to best perform with a certain specified level of fuel inside the float bowl.
A too high fuel level results in an excessively rich mixture throughout the throttle range.
A too low fuel level results in an excessively lean mixture throughout the throttle range.

Here's a link to a fairly comprehensive thread regarding 33 smoothies:
Click > www.kzrider.com/forum/3-carburetor/16281...?limitstart=0#162815

Good Fortune! :)
1973 Z1
KZ900 LTD
Last edit: 18 Nov 2016 03:57 by Patton.

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Re: Mikuni VM 33 Carbs

18 Nov 2016 06:27
#748217
Patton wrote:
daveo wrote: :huh: What difference does lowering the fuel levels make?

The carb is designed to best perform with a certain specified level of fuel inside the float bowl.
A too high fuel level results in an excessively rich mixture throughout the throttle range.
A too low fuel level results in an excessively lean mixture throughout the throttle range.

Here's a link to a fairly comprehensive thread regarding 33 smoothies:
Click > www.kzrider.com/forum/3-carburetor/16281...?limitstart=0#162815

Good Fortune! :)

Very interesting but he is asking about his flat slides. My 33's are set up differently but I'll read on and maybe learn something. :whistle:
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Mikuni VM 33 Carbs

18 Nov 2016 14:23
#748248
I set the floats at 17 mm +/- 1 mm per Mikuni Flatslide instructions, as I imagine most folks do. :whistle:
Would think there would be clear-tube method instructions somewhere for these carbs, but I have not been able to find any. :evil:

Any leads?
1982 KZ1100-A2

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Re: Mikuni VM 33 Carbs

18 Nov 2016 16:11
#748262
I would check them all with the clear tube to see if they are all the same.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Mikuni VM 33 Carbs

19 Nov 2016 15:25
#748377
Just had our first cold day with snow. Perhaps another few rides before its over for another season here.
Thanks Steve, I'll check that...the last time was a few months ago.
Just curious, have you ever considered getting a set of the Flat Slide carbs for your 900?
1982 KZ1100-A2

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Re: Mikuni VM 33 Carbs

19 Nov 2016 20:15
#748404
It's a 1015 with cams and such. I've thought about it but would rather invest in other improvements first.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Mikuni VM 33 Carbs

19 Nov 2016 21:39 - 20 Nov 2016 08:55
#748410
I went the RS36, though other members suggested the RS34 would be the better size for my engine. Thought about getting a used set to test, then keep whichever set works better.

The fuel levels were very-close across the set.

1982 KZ1100-A2

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Last edit: 20 Nov 2016 08:55 by daveo. Reason: Revise text and change pic

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Re: Mikuni VM 33 Carbs

22 Nov 2016 07:57
#748666
daveo wrote: I went the RS36, though other members suggested the RS34 would be the better size for my engine. Thought about getting a used set to test, then keep whichever set works better.

The fuel levels were very-close across the set.


Can't help it...I did it again. :pinch: One PO set of RS34-D21-K will surely arrive the day we get blasted with snow. :lol:
1982 KZ1100-A2

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Re: Mikuni VM 33 Carbs

25 Nov 2016 19:02
#748929
Reading that thread saying the 33's are slow at low RPM got me to take this clip. Slow?
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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Re: Mikuni VM 33 Carbs

28 Nov 2016 20:10
#749135
Rather than starting a new thread I decided to put it here. May have to tweak the carbs so it will rev better.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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