Mikuni 28mm vs 29mm smoothbore

  • wireman
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23 Dec 2012 21:11 #564369 by wireman
Replied by wireman on topic Mikuni 28mm vs 29mm smoothbore
Well those are the better looking 28s,not the smog carbs from 79-80. :laugh:

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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  • mopguy
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24 Dec 2012 15:37 #564538 by mopguy
Replied by mopguy on topic Mikuni 28mm vs 29mm smoothbore
Thankyou all for your input and Merry Christmas and Happy New year to all members.

I have a 1980 Kawasaki KZ750 Ltd. I bought new. I recently managed to get it out of my garage after 28 years and put it on the road again (2010). I feel like a kid all over again. Since I have acquired 3 78 KZ1000 Ltd, 1 1981 KZ1000 Ltd, and another 1980 KZ750 Ltd. Love the LTD's.

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25 Dec 2015 08:04 #704296 by KZB2 650
Replied by KZB2 650 on topic Mikuni 28mm vs 29mm smoothbore
The 29s are a after market carb and did not come stock on any model ........ search for em on here....

should come up with a lot of good info.

1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
The following user(s) said Thank You: Nessism, peter1958

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25 Dec 2015 08:15 - 25 Dec 2015 08:16 #704297 by 650ed
Replied by 650ed on topic Mikuni 28mm vs 29mm smoothbore
If you are trying to find a set of smoothbores look for the brass bead showing in the rectangle on the carb as shown in the red circle below. Ed

Attachment Smoothbore-3.jpg not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Last edit: 25 Dec 2015 08:16 by 650ed.

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25 Dec 2015 08:23 - 25 Dec 2015 08:24 #704299 by peter1958
Last edit: 25 Dec 2015 08:24 by peter1958. Reason: o
The following user(s) said Thank You: PLUMMEN

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  • SWest
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25 Dec 2015 08:40 - 25 Dec 2015 08:43 #704301 by peter1958
Replied by peter1958 on topic Mikuni 28mm vs 29mm smoothbore
My elr got real fast I lost about 30 lbs and isnt like 1lb a tenth in the 1/4 mile best improvement in my bike
Last edit: 25 Dec 2015 08:43 by peter1958. Reason: j

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25 Dec 2015 08:48 #704302 by peter1958
Replied by peter1958 on topic Mikuni 28mm vs 29mm smoothbore
I have used just about every carb every mod and every mod exept frame mods for speed easy to just lose some of your own weight isnt it. I must have 13 bikes 50 sets of carbs and a little common sense. Oh and an empty bottle of wine cheers

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25 Dec 2015 10:38 #704311 by floivanus
Replied by floivanus on topic Mikuni 28mm vs 29mm smoothbore
I REALLY don't get this fascination with people and 29s, they are expensive, work a little better offer an extra millimeter of venturi size, and are expensive OLD tech, if you insist on paying $700+ on a set of carbs, get something modern, adapt a set off a gsxr, or a newer ninja, buy actual NEW carbs or just do an EFI swap and forget tuning.

You have 3 basic setups for 29s, kz, suzuki gs, and honda cb750; z1enterprises had/has a page on identifying the differences.

my bikes; 80kz1000(project), 77 gl1000, 74 h2 (project)
Past; 78 kz1000, 83 kz550
Andrew

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  • eddiem
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25 Dec 2015 11:23 #704323 by eddiem
Replied by eddiem on topic Mikuni 28mm vs 29mm smoothbore
I agree with you but I like running the air box. Is it possible to run the air box with newer carbs?

1976 Kz900
1978 Kz1000
1978 Z1r
1982 Kz1100 A2
1975 Z1b-900
1975 Z1b-900

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  • SWest
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25 Dec 2015 13:30 #704343 by SWest
Replied by SWest on topic Mikuni 28mm vs 29mm smoothbore
Yes.


You might have to make the openings larger. I'd like to have some nice flat slides. B)
Steve
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  • eddiem
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25 Dec 2015 14:11 #704345 by eddiem
Replied by eddiem on topic Mikuni 28mm vs 29mm smoothbore
cool....gave me an idea. Thanks Steve

1976 Kz900
1978 Kz1000
1978 Z1r
1982 Kz1100 A2
1975 Z1b-900
1975 Z1b-900

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