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Test Description: FZR 1000 J.C. Performance Stage III

5 Valve Stage III Flowbench data
(Stage IV is approx +10%)

Intake Valve Diameter: CONFIDENTIAL Intake Stem Diameter: 4.5mm
Exhaust Valve Diameter: CONFIDENTIAL Exhaust Stem Diameter: 4.5mm
Intake Area: Proprietary Exhaust Area: Proprietary
Barometric Pressure: 29.92 Altitude: 12
Barometric & Altitude Correction Factor: 1.0 Room Temperature: 60o


These numbers are much improved by using an 80mm Bore (1125cc)
Valve Lift/Diameter (L/D) .05 .1 .15 .2 .25 .3
Intake Value Lift 
 

    
 

    
 

    
 

    
 

    
 

  

    Exhaust Value Lift
    
 

    
 

    
 

    
 

    
 

    
 





  * - 117 CFM with 39mm 
  Carb
** - at full lift.
*** - 80% of 
  modified intake with 39mm Carb

  
  

    78mm Bore Intake & Manifold & 
      Stack
    Exhaust & Mod. Primary 
    Pipe

  

    Test Number
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12

  

    Port Tested
    #3
    #3
    #3
    
 

    #3
    
 

    #3
    
 

    
 

    
 

    
 

    
 

  

    Test Pressure
Inches H20		
    10"
    9"
    8"
    
 

    6"
    
 

    8"
    
 

    
 

    
 

    
 

    
 

  

    Valve Lift Inches
    .100
    .200
    Full
Lift
.308		
    
 

    Custom
Cam		
    
 

    Full
.299		
    
 

    
 

    
 

    
 

    
 

  

    Flow Range Selected
    76.8
    97.9
    131.3
    
 

    131.3
    
 

    86.2
    
 

    
 

    
 

    
 

    
 

  

    Flow Gage Reading %
    76
    95.9
    82.5
    
 

    80.5
    
 

    97.5
    
 

    
 

    
 

    
 

    
 

  

    Corrected Flow @ 10"
Fr*Fg*Cf		
    58.3 CFM
    100.69 CFM
    121.07 CFM
    
 

    136.3 CFM
    
 

    93.9 CFM
    
 

    
 

    
 

    
 

    
 

  

    Leakage
    0
    0
    0
    
 

    0
    
 

    0
    
 

    
 

    
 

    
 

    
 

  

    Test Flow
(Cf - Leakage)		
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

  

    Test Flow / In2
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

  

    Theor. Max. Flow for Valve Area
    38.59 CFM
    76.9
    106.6
    
 

    106.6
    
 

    ***
    
 

    
 

    
 

    
 

    
 

  

    % Max. Flow Achieved
    152%
    130%
    114% *
    
 

    128% **
    
 

    ***
    
 

    
 

    
 

    
 

    
 





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