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Test Description: Buell Thunderstorm XL1200 Head - Stock Intake

Intake Valve Diameter: 1.812 Intake Stem Diameter: .310
Exhaust Valve Diameter: 1.575 Exhaust Stem Diameter: .310
Intake Area: Exhaust Area:
Barometric Pressure: 29.92" Altitude: 12'
Barometric & Altitude Correction Factor: Room Temperature: 70o


Valve Lift/Diameter (L/D) .05 .1 .15 .2 .25 .3
Intake Value Lift 
 

    
 

    
 

    
 

    
 

    
 

  

    Exhaust Value Lift
    
 

    
 

    
 

    
 

    
 

    
 





  
  

    Test Number
    1
    2
    3
    4
    5
    6
    7
    8

  

    Port Tested
    Intake Valve 63.5cc Chamber Stock Manifold

  

    Test Pressure
    10"
    10"
    10"
    9"
    6"
    6"
    6"
    6"

  

    Valve Lift Inches
    .100
    .150
    .200
    .300
    .400
    .450
    .500
    .550

  

    Flow Range Selected
    44.7
    61.5
    84.1
    109.6
    118.2
    118.2
    118.2
    118.2

  

    Flow Gage Reading %
    80.5
    92.5
    93.5
    99
    90.5
    94.5
    96
    96

  

    Corrected Flow @ 
    10"
Fr*Fg*Cf		
    35.9
    56.8
    78.6
    113.9
    137.9
    144
    146.3
    146.3

  

    Leakage
    0
    0
    0
    0
    0
    0
    0
    0

  

    Test Flow
(Cf - Leakage)		
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

  

    Test Flow / In2
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

  

    Theor. Max. Flow for Valve Area
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

  

    % Max. Flow Achieved
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 

  

    Flow @ 25"
    
 

    
 

    
 

    
 

    
 

    
 

    
 

    
 





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