Valves, Guides, and Lifter Dimensions.

Competition Distributing Inc.
Valves, Valve Guides, Exhaust Lifters and Lifter Pin Dimensions
Our valves are 1 piece, forged stainless steel. Made in the USA.

 
Intake Valves
Part# Years Motor Stem Diameter Head Diameter Length
116-15 1915-1916 61" Twins 0.275" 1.81" 3.19"
116-17 1917-1927 61" Twins 0.285" 1.83" 3.11"
117-23 1923-1929 74" Twins 0.285" 1.998" 3.37"
Exhaust Valves
Part# Years Motor Stem Diameter Head Diameter Length
180-11 1910-1914 Single, Twin 0.321" 1.750" 6.0"
180-15 1915-1926 61" 0.321" 1.750" 5.5"
181-10 1910-1915 Headstrom 0.340" 1.6225" 4.87"
181-21 1921-1927 *Twins 0.321" 1.942" 5.63"
181-23 1921-1927 *Twins 0.321" 2.063" 5.61"
Intake Valve Guides
Part# Years Motor Inside Diameter Outside Diameter Style
95-17STD 1917-1924 61", FD, JD   .278" 9/16" Thread In
95-17OS 1917-1924 61", FD, JD .284" 9/16" Thread In
95-24STD 1924-1929 61", 74" Twins .278" .4675" Press In
95-24OS 1924-1929 61", 74" Twins .284" .4675" Press In
Exhaust Valve Guides
Part# Years Motor Inside Diameter Outside Diameter Style
184-21 1921-1924 74" Twins .328" 11/16"  Thread In
184-25 1925-1929 Twins .318" .440" Press In (bronze sleeve)
Exhaust Lifter Pins
Part# Years Motor Length Outside Diameter  
218-15STD 1915-1929 61" Twins 2.395" .380"  
218-15OS 1915-1929 61" Twins 2.395" .410"  
219-21OS 1921-1929 74" Twins 2.643" .413"  
  Exhaust Lifter Pins Bushings
Part# Years Motor Inside Diameter Length  
226-14 1914-1920 74" Twins .375" 1.725"  
226-21 1921-1929 74" Twins .410" 1.835"