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JP Performance products for AJS Motorcycle 31CS, 31CSR, 646cc, OHV, CR 8.5:1 engines

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31CS, 31CSR, 646cc, OHV, CR 8.5:1

JPO789
AJS  Motorcycle 31CS, 31CSR, 646cc, OHV, CR 8.5:1
Metric Bore
72
Imp Bore
2.8346
Head Shape
4G     +0.527? (13.4)
Clips
SC 19
Cylinders
2
Crown
dome with valve
Comp Height
2.197
Length Inches
2.978
D.B.B
1.102
Ring Comp
2 x 1/16"
Rings Oil
1 x 5/32"
OC
P
Pin OD
0.75
Pin Type
P

            

        

    

    
        
    

        

            

                		

						



	




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