Amal Norton. Es2. M18. Carburettor. 1 1/16" 1937-54. Through draft: 1. 1/16" (internal front to back) = 26,98 mm. Clip Fittting 1. 1/4" = 31,75 mm. Main Jet 160. Needle Jet 106. Valve slide 4.
Made in England. AJS Mod. 2/ Matchless Mod. X Mainjet 130 Valve Slide 3 or 4, Needle Jet 106. Matchless Mod. X . Brough Superior SS80. this can be jetted as per your request. Please look at all pictures. Measurements are the same as flange fitting.
Bsa Sloper Piston. 500cc. 1925-31 STD
upright and sloper
Measurements see last pict.
gudgeon pin 15,87 mm = 5/8"
S25,S26,S27,S28,S29,S30-9,S31-7 493cc ,SV 1925-31
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou