Mikuni Kogyo Carb identification

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12 Dec 2015 16:16 #702881 by kawasakisubaru
Mikuni Kogyo Carb identification was created by kawasakisubaru
I need help i identifying these carbs.
I know they're mikuni, but I can't find anything on kogyo model carbs.
As you can see a few of the parts are rusted and wearing so i wanted to buy a rebuild kit.
But they look nothing like what I found on the mikuni website

1980 KZ750 E1
Kerker by Kawasaki 4-1 exhaust
Lockhart oil cooler
Mikuni VM29 smoothbore carbs
Pingel high flow petcock
Dunlop K70s

Custom brat style seat
Clubman bars
Dime city cycles 1.5in tach/speedo
Ox blood grips

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12 Dec 2015 16:17 #702882 by kawasakisubaru
Replied by kawasakisubaru on topic Mikuni Kogyo Carb identification
forgot to add pic lol

1980 KZ750 E1
Kerker by Kawasaki 4-1 exhaust
Lockhart oil cooler
Mikuni VM29 smoothbore carbs
Pingel high flow petcock
Dunlop K70s

Custom brat style seat
Clubman bars
Dime city cycles 1.5in tach/speedo
Ox blood grips
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12 Dec 2015 16:25 - 12 Dec 2015 16:26 #702885 by 650ed
Replied by 650ed on topic Mikuni Kogyo Carb identification
I think what you have there are the very desirable smoothbore carbs. Take a look in the rectangular depression I circled in yellow in the first image below. If there is a little brass bead in there as I show circled in red in the second image below I believe that proves for sure that they are in fact smoothbores. That's a good thing! Ed

Attachment 00003b-41.jpg not found



Attachment Smoothbore-2.jpg not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Last edit: 12 Dec 2015 16:26 by 650ed.
The following user(s) said Thank You: kawasakisubaru, 750Kruzer

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12 Dec 2015 18:02 #702890 by zukdave
Replied by zukdave on topic Mikuni Kogyo Carb identification
Ed's correct they are VM29 smoothbore there are no rebuild kits for them you will need to get each part separate
Call Rob at Z1 Enterprize he'll get you what you need.

1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.
The following user(s) said Thank You: kawasakisubaru

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12 Dec 2015 21:33 #702906 by kawasakisubaru
Replied by kawasakisubaru on topic Mikuni Kogyo Carb identification
thanks guys, checked for that little bead and its there.
Whats so special about these carbs? they work great, but recently have shown some shaky throttle responses at low speed

1980 KZ750 E1
Kerker by Kawasaki 4-1 exhaust
Lockhart oil cooler
Mikuni VM29 smoothbore carbs
Pingel high flow petcock
Dunlop K70s

Custom brat style seat
Clubman bars
Dime city cycles 1.5in tach/speedo
Ox blood grips

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12 Dec 2015 23:51 #702911 by floivanus
Replied by floivanus on topic Mikuni Kogyo Carb identification
Aftermarket performance carb, bigger venturi, bigger fuel passages, extra parts. Smoothbore design.

Good carb for the day, bit of a step up over 26's

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

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13 Dec 2015 03:17 #702914 by 650ed
Replied by 650ed on topic Mikuni Kogyo Carb identification
No eBay APP ID and/or Cert ID defined in Kunena configurationJust for laughs let's say you wanted to replace them.....



;)

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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13 Dec 2015 03:40 #702916 by zukdave
Replied by zukdave on topic Mikuni Kogyo Carb identification
Since I run these on my 810 cc GPz750 motor let me say this
sell them they are a RACE carb and way to big for a stock street riden KZ650.
you will pull your hair out trying to get them to idle and have good off idle perfomance.

To give you an idea I'm running 25 pilot jet and 125 main jets and it still idles like shit under 1200 rpms
if at all and get's sht for gas milage

1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

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13 Dec 2015 06:00 #702934 by kawasakisubaru
Replied by kawasakisubaru on topic Mikuni Kogyo Carb identification
(My bike is KZ750 E1 with a stock motor and aftermarket exhaust)
Well that explains a lot! I bought the bike two years ago and it has ALWAYS had minor idle issues. The guy I bought it from bought it from the original owner and got it running to resell.
Redline cycles in Illinois wants $80 an hour for a rebuild/refurbish. But with shipping and labor and parts I suspect I'm better off buying another set of carbs.
Any recommendations? Everything from dime city cycles is hella expensive

(Also 650ed your link is not working)

1980 KZ750 E1
Kerker by Kawasaki 4-1 exhaust
Lockhart oil cooler
Mikuni VM29 smoothbore carbs
Pingel high flow petcock
Dunlop K70s

Custom brat style seat
Clubman bars
Dime city cycles 1.5in tach/speedo
Ox blood grips

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13 Dec 2015 06:05 #702935 by 650ed
Replied by 650ed on topic Mikuni Kogyo Carb identification
I don't know why the link didn't work, but here's what it was to:

Attachment 00003a-143.jpg not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Attachments:

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13 Dec 2015 06:08 #702937 by kawasakisubaru
Replied by kawasakisubaru on topic Mikuni Kogyo Carb identification
LOL $1,200????? That's insane

1980 KZ750 E1
Kerker by Kawasaki 4-1 exhaust
Lockhart oil cooler
Mikuni VM29 smoothbore carbs
Pingel high flow petcock
Dunlop K70s

Custom brat style seat
Clubman bars
Dime city cycles 1.5in tach/speedo
Ox blood grips

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13 Dec 2015 06:36 #702941 by 650ed
Replied by 650ed on topic Mikuni Kogyo Carb identification
They are very desirable carbs, but they are a bit large for a stock KZ750 engine. Treat them very carefully if you decide to put smaller carbs on your KZ750. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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