kz1000m2 csr to kz1000j1 cams jetting
- Nessism
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Re: kz1000m2 csr to kz1000j1 cams jetting
Yesterday 06:47 - Yesterday 06:55I've seen various BS34 sets with those extra ports on the inlet side, but without the air-cut system. Haven't studied it close, but just wondering?[attachment=180964 wrote: Screenshot 2025-12-11 064931.png[/attachment]asphalt900 post=919684 userid=19828"]Bound, pertaining to the reason/function of those J carbs having (2) air jets instead of just 1. It's all because of the Coasting enricher/Air-Cut. In Honda world, because they have been using them for years, Air-Cut is more of a correct terminology because that's what they do/cut air. You'll note the location in photos their location. One at the intake, one underneath the diaphragm. You have TWO separate functions of that Air-Cut diaphragm, vacuum and metering. Vacuum pulls the little diaphragm out to "Cut-Off/Block" the air rushing in from jet underneath the slide diaphragm, resulting in a richer mixture in pilot system. High Vacuum when engine high in RPMs and throttle plate in a closed position provides this. In normal state of running you're siphoning air from Both air jets. When coming down from a stop that protrusion from air cut blocks off the upper air jet. Anyhoot, something to consider, Clay
Last edit: Yesterday 06:55 by Nessism.
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Re: kz1000m2 csr to kz1000j1 cams jetting
Yesterday 13:29 - Yesterday 13:30
The cams everyone's talking about:
And cylinder head, if you really want to get serious...
😎
And cylinder head, if you really want to get serious...
😎
1982 KZ1100-A2 bike powered by a 1984 ZN/ZX1100 motor since late 2024
Last edit: Yesterday 13:30 by daveo.
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Re: kz1000m2 csr to kz1000j1 cams jetting
Yesterday 13:40
Those make me salivate 🤤... maybe I'll find a good deal on some in the future. Meanwhile I have been researching and I found that the kz1000J3 model has basically the same carburetor with the same pilot air jets, main air jets, and starter jets. However the main jet, jet needle, and needle jet are pretty weird... curious on what you guys think.
1982 KZ1000M2 CSR
1983 KZ440D5 LTD
Craig
1983 KZ440D5 LTD
Craig
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Re: kz1000m2 csr to kz1000j1 cams jetting
Yesterday 15:17 - Today 17:05
This BS34 set was removed and placed in a box ten years ago
...trial fit for potential use early this year
They were then placed back in the box...
😆
Velocity stacks DO NOT work with a stock air box.
🫤
...trial fit for potential use early this year
They were then placed back in the box...
😆
Velocity stacks DO NOT work with a stock air box.
🫤
1982 KZ1100-A2 bike powered by a 1984 ZN/ZX1100 motor since late 2024
Last edit: Today 17:05 by daveo.
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Re: kz1000m2 csr to kz1000j1 cams jetting
Today 16:25 - Today 19:05Yeah I heard that they are made lean from the factory. Is that true? What carbs are you running right now?
I believe so, sadly.
Thankfully, we have options available to satisfy the instinctual desire for speed and power, that some folks happen to be born with...
These carbs are all I should ever want, except a set of cheap TMR34's properly spaced for my head.
Mikuni RS34-D21-K
🫠
1982 KZ1100-A2 bike powered by a 1984 ZN/ZX1100 motor since late 2024
Last edit: Today 19:05 by daveo.
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