AJS/Matchless Piston 350cc +020
Gudgeon Pin: 22 mm - 7/8"
for Alloy Cylinder Head
1948-62
7,5:1
OD 69.5 mm
Total hight 85 mm
Piston clearance 0,12 mm
347 cc OHV 16M 1948-55
347 cc OHV 16MS 1956-58
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no warranty
Thread in spark plug holes are good
Rocker stud threads 26 TPI 5/16 good useable condition
Inlet Manifold – 2 threads 5/16 26 TPI – good condition
Our only negative comment – one oft he front rockerbox holes is now 5/16 not ¼“
BSA Piston 85mm B50 Goldstar +40 500cc Unit Construction. BSA DBD Gold Star Pre Unit STD
Diameter of this piston = 85mm
with gudgeon pin, circlips and piston rings
Piston Clearance 0.12mm or 45thou
Compression 10:1
compr. hight: approx. 32.6 mm
Gudgeon Pin Diameter: 19.00mm
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