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VM26 Specs Needed
- Nessism
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- float height
- fuel level
- stock jetting : main and pilot. Currently 107.5 and 17.5. I realize that there may be different jetting for different years but wondering about a baseline.
- pilot fuel screw setting.
I don't know which model KZ these came from. They are just the standard VM26's. Nothing fancy.
Thanks in advance.
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- SWest
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- 10 22 2014
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Steve
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- Nessism
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- SWest
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Steve
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Steve
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- Patton
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Nessism wrote: I'm almost done rebuilding a set of VM26's and could use some help with the following:
- float height
- fuel level
- stock jetting : main and pilot. Currently 107.5 and 17.5. I realize that there may be different jetting for different years but wondering about a baseline.
- pilot fuel screw setting.
I don't know which model KZ these came from. They are just the standard VM26's. Nothing fancy.
Thanks in advance.
From the FSM covering Z1 through KZ900:
Good Fortune!
1973 Z1
KZ900 LTD
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- KZQ
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The FSM manual doesn't address float height but it specifies that the fuel level should be 1/8" below the edge of the carburetor body.Nessism wrote: I'm almost done rebuilding a set of VM26's and could use some help with the following:
- float height
- fuel level...
Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
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- SWest
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- 10 22 2014
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Patton wrote:
Nessism wrote: I'm almost done rebuilding a set of VM26's and could use some help with the following:
- float height
- fuel level
- stock jetting : main and pilot. Currently 107.5 and 17.5. I realize that there may be different jetting for different years but wondering about a baseline.
- pilot fuel screw setting.
I don't know which model KZ these came from. They are just the standard VM26's. Nothing fancy.
Thanks in advance.
From the FSM covering Z1 through KZ900:
Good Fortune!
Not knowing what bike these carbs came from it is helpful to have the spcs from a full range of years. Ed what needle do you have. That might give a clue.
Steve
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- Patton
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Stock 1976 KZ900 has 26mm Mikuni with side-located pilot air screw.
Stock 1977 KZ1000-A1 and 1978 KZ1000-A2 have 26mm Mikuni with bottom-located pilot mixture screw.
Turning out pilot air screw adds air which leans the mixture.
Turning in pilot air screw reduces air which enriches the mixture.
Turning out pilot mixture screw adds mixture which enrichens the intake.
Turning in pilot mixture screw reduces mixture which leans the intake.
Per FSM covering 1977 KZ1000~1979 KZ1000:
1977 KZ1000-A1
Mikuni VM26SS (Pilot Mixture Screw)
Main Jet 107.5R
Needle Jet 0-6
Jet Needle 5CN8-3
Pilot Jet 17.5
Pilot screw 1¼ ± 1/8 turn out
Throttle Valve Cutaway 1.5
Design Fuel Level 32 ± 1mm
Service Fuel Level 3.0 ± 1mm
1978 KZ1000-A2
Mikuni VM26SS (Pilot Mixture Screw)
Main Jet 105R
Needle Jet 0-5/2
Jet Needle 5DL31-3
Pilot Jet 15
Pilot screw 1.0 ± 1/8 turn out
Throttle Valve Cutaway 1.5
Design Fuel Level 32 ± 1mm
Service Fuel Level 3.0 ± 1mm
A3 and D1-2 stock have VM28SS with side-located pilot air screw.
Good Fortune!
1973 Z1
KZ900 LTD
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