- Posts: 112
- Thank you received: 2
Mikun BS34 vs Keihin CV34
- kz750saskatoon
- Topic Author
- Offline
- User
I currently have a set of Keihin CV34s on my KZ750 H2. I don't have any major issues with them. Bike seems to run pretty good, to me. It is all stock except for Dynatek coils and copper-core wires I just put on it.
However, I have an opportunity to pick up a set of BS34s. Can someone summarise pros/cons to the two types of carbs? A few questions I have off the start is:
1) Do the BS34s mount the same as the CV34s or will I need to modify something to get them to fit the stock airbox?
2) Is there an inherit performance benefit to either?
3) Are the BS34s easier to work with and/or find parts for? (This whole post was initiated by a post I read stating that the diaphragms for the CVs can be hard to find or very expensive whereas the BS34 do not have this issue.)
If there are other things that you like/hate about these carbs feel free to include that too. I hope this isn't a hated discussion around these parts.
1981 KZ750-H2
Saskatoon, SK
Please Log in or Create an account to join the conversation.
- otakar
- Offline
- User
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- vonbagh
- Offline
- User
- Posts: 22
- Thank you received: 2
Jos se ei tapa, niin se vituttaa.
Please Log in or Create an account to join the conversation.
- apbling
- Offline
- User
- Posts: 999
- Thank you received: 12
I have the CV34's and JR can attest to this (I think WG also agrees), once set up and clean, make really good power and are smooth. I did get lucky and get a complete parts set for $25 (4 good diaphragms too...cha ching!). After about 15 cleanings, I couldn't be much more satisfied with my 34's. Alas, I did keep everything stock, which helps with having to find parts.
I'd say if the bs's are cheap enough, pick them up. Good insurance policy.
Please Log in or Create an account to join the conversation.
- otakar
- Offline
- User
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- apbling
- Offline
- User
- Posts: 999
- Thank you received: 12
Please Log in or Create an account to join the conversation.
- otakar
- Offline
- User
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- wagonmaster69
- Offline
- User
- 78 KZ1000A2 / 82 KZ1100 Spectre
- Posts: 700
- Thank you received: 4
Do you need them or can I rebuild the carbs without them?
78 KZ1000 work in progress in Hacienda Heights California and a 82 KZ1100 Spectra And a 1992 ZX11.
Please Log in or Create an account to join the conversation.
- otakar
- Offline
- User
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Please Log in or Create an account to join the conversation.
- vonbagh
- Offline
- User
- Posts: 22
- Thank you received: 2
Jos se ei tapa, niin se vituttaa.
Please Log in or Create an account to join the conversation.
- wagonmaster69
- Offline
- User
- 78 KZ1000A2 / 82 KZ1100 Spectre
- Posts: 700
- Thank you received: 4
Were can you get them?otakar wrote: I would replace them. If you get air threw the plungers you can have idle problems.
Other than Z1 (sorry Jeff) cause they cost $11.34 a piece.
And I need all four.
78 KZ1000 work in progress in Hacienda Heights California and a 82 KZ1100 Spectra And a 1992 ZX11.
Please Log in or Create an account to join the conversation.
- roy-b-boy-b
- Offline
- User
- Posts: 3255
- Thank you received: 103
The Mikunis are great,trouble free carbs. I have been running mine for several years.They look good and I get great gas mileage.
I finally replaced the vacumn petcock with the new one that Jeff has. Roy
1979 LTD Street Fighter.1977 KZ1000
Please Log in or Create an account to join the conversation.