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Test Description: FZR 1000 Exhaust Samples

All makes similar, Suzuki, Kawasaki, etc.

J.C. Modified Stock EX Cannister (9.5 lbs)
vs.
Stock (12.5 lbs)
V&H SS2R Race (5.5 lbs)
J.C. Carbon Fibre (3.5 lbs)

Intake Valve Diameter: Intake Stem Diameter:
Exhaust Valve Diameter: Exhaust Stem Diameter:
Intake Area: Exhaust Area:
Barometric Pressure: 29.91 Altitude: 12'
Barometric & Altitude Correction Factor: 1.0 Room Temperature: 65o


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
    
 

    
 

    
 

    
 

    
 

    
 





  * - +250% over 
  stock
** - +275% over stock 
  
  

    Test Number
    Stock Can
    V&H SS2R Race
    JC Mod Stock
    JC Carbon Fibre

  

    Port Tested
    
 

    
 

    
 

    
 

  

    Test Pressure
Inches H20		
    8"
    3"
    1"
    1.2"

  

    Valve Lift Inches
    
 

    
 

    
 

    
 

  

    Flow Range Selected
    99.4
    111.7
    99.4
    112.2

  

    Flow Gage Reading %
    92
    94
    92.5
    97

  

    Corrected Flow @ 
    10"
Fr*Fg*Cf		
    102.2
    191.6
    290.7
    314

  

    Leakage
    
 

    
 

    
 

    
 

  

    Test Flow
(Cf - Leakage)		
    
 

    
 

    
 

    
 

  

    Test Flow / In2
    
 

    
 

    
 

    
 

  

    Theor. Max. Flow for Valve Area
    
 

    
 

    
 

    
 

  

    % Max. Flow Achieved
    
 

    
 

    
 

    
 

  

    Flow @ 25" H20
    180.6 CFM
    302.8 CFM
    459.6 CFM *
    498.3 CFM **





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