33 mm Mikuni Jetting

trickedST
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07 Jan 2006 14:06 #16547 by trickedST

33 mm Mikuni Jetting was created by trickedST

I have a 1075 kit that I am putting in my bike 10.25/1, with 410 cams, a ported and polished head, and a Vance and Hines 4 into 1 header. Does anyone have any suggestions on what jets to use in my Mikuni 33mm carbs? Thanks

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roy-b-boy-b
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07 Jan 2006 15:08 #16554 by roy-b-boy-b

Replied by roy-b-boy-b on topic 33 mm Mikuni Jetting

I have basiclly the same set up. I disremember the jetting. I will be in the shop tomorrow and will drop a bowl and look. I think Wired George and i were talking about the jetting of these carbs. Maybe he will chime in. Roy

1979 LTD Street Fighter.1977 KZ1000

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trickedST
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07 Jan 2006 16:59 #16574 by trickedST

Replied by trickedST on topic 33 mm Mikuni Jetting

Thanks alot....I appreciate any help on can get on this considering after I purchased the carbs, I've had more than one person tell me I shouldn't have went with 33s, I disagree of course.

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Ron G
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07 Jan 2006 18:13 #16592 by Ron G

Replied by Ron G on topic 33 mm Mikuni Jetting

Here's the Mikuni VM33 base jetting table.

Ron

Post edited by: ron g, at: 2006/01/07 21:16

Attachments:

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roy-b-boy-b
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07 Jan 2006 19:29 #16608 by roy-b-boy-b

Replied by roy-b-boy-b on topic 33 mm Mikuni Jetting

Thanks for the chart. I haven't run mine yet. I think i just set it up from what Frank told me . He runs Powerhouse out on Long Island and he builds awsome bikes. That's where i got my boots also.
A well know carb guru told me the 33's are the only way to go. So simple and never a bog. Roy

1979 LTD Street Fighter.1977 KZ1000

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wiredgeorge
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08 Jan 2006 15:08 #16761 by wiredgeorge

Replied by wiredgeorge on topic 33 mm Mikuni Jetting

Roy - We talked about BS34 (constant velocity) carbs and not VM33 smoothbores. The larger smoothbores have a bad reputation regarding low end tunability; can't say for sure if it is deserved or not. The BS34s are easy to tune and provide great all around performance on stock OR modified bikes.

wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!

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roy-b-boy-b
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08 Jan 2006 16:47 #16773 by roy-b-boy-b

Replied by roy-b-boy-b on topic 33 mm Mikuni Jetting

Well Duh! I getting senile George.:blush: Next subject please. Roy

1979 LTD Street Fighter.1977 KZ1000

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trickedST
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08 Jan 2006 18:31 #16799 by trickedST

Replied by trickedST on topic 33 mm Mikuni Jetting

Someone told me to bump the main jet up to the next size over stock and leave the pilot and air jet the stock size....Does that sound like it would work with my set up?

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craigpuckett
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09 Jan 2006 06:55 #16866 by craigpuckett

Replied by craigpuckett on topic 33 mm Mikuni Jetting

I think I used 132.5 or 135's in my 33's and I had close to the same setup you are running,you may have to faten the needle some as they were a little lean down low,I used em for drag racing so it didnt matter much how it ran low as long as 5500-6k and above was good.
I have 3 sets

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RonKZ650
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09 Jan 2006 10:42 #16897 by RonKZ650

Replied by RonKZ650 on topic 33 mm Mikuni Jetting

I see these are for sale locally if anyone wants a set.

321,000 miles on KZ's that I can remember. Not going to see any more.

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z19OO
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10 Jan 2006 17:13 #17148 by z19OO

Replied by z19OO on topic 33 mm Mikuni Jetting

Ron, are those 34mm flatslides?? How much?

1975 z1 900
1979 kz650b

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RomSpaceKnight
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12 Jan 2006 14:13 #17528 by RomSpaceKnight

Replied by RomSpaceKnight on topic 33 mm Mikuni Jetting

Size and price, please.

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