Fits :
Type-1 dual port engines
Type-3 dual port engines
Specifications:
Cylinder head Ø: 94 mm
Combustion chamber: 58cc
Valves: 40 x 35.5 mm Stainless Steel
Valve springs: dual
Paruzzi number : 01735
Fits :
Type-4 engines
Specifications:
Bore: 90 mm
Stroke: 66 mm
Case Ø: 100 mm
Cylinder head Ø: 100 mm
Piston pin Ø: 24 mm
Paruzzi number : 41791
Fits :
Type-1 engines
Type-3 engines
CT/CZ engines
Specifications:
Bore: 87 mm
Stroke: 69 mm
Case Ø: 90 mm
Cylinder head Ø: 94 mm
Piston pin Ø: 22 mm
Paruzzi number : 01787
Fits :
Type-1 engines
Type-3 engines
CT/CZ engines
Specifications:
Stroke: 78 mm
Journal: VW Type-1
Material: 4340 chromoly
Paruzzi number : 01666
Fits :
Type-1 engines
Type-3 engines
CT/CZ engines
Specifications:
Stroke: 82 mm
Journal: VW Type-1
Material: 4340 chromoly
Paruzzi number : 01667
Fits :
Type-4 engines
Specifications:
Bore: 94 mm
Stroke: 71 mm
Case Ø: 100 mm
Cylinder head Ø: 105 mm
Piston pin Ø: 24 mm
Paruzzi number : 41790
Fits :
Type-4 engines 2000cc until 7.1978
Specifications:
Valves: 39.3 x 33.0 mm
Spark plug size: 14 mm
Combustion chamber: 56.5cc
Paruzzi number : 41727
Fits :
Type-4 engines 2000cc until 7.1978
Specifications:
Valves: 37.5 x 33.0 mm
Spark plug size: 14 mm
Combustion chamber: 56.5cc
Paruzzi number : 41726
Fits :
Type-4 engines 2000cc engine code CU or CV
Specifications:
Valves: 39.3 x 33.0 mm
Spark plug size: 14 mm
Combustion chamber: 56.5cc
Paruzzi number : 41724
Fits :
Type-4 engines 2000cc (engine code GE or CJ) 8.1978 and later
Specifications:
Valves: 37.5 x 33.0 mm
Spark plug size: 14 mm
Combustion chamber: 56.5cc
Paruzzi number : 41728
Fits :
Waterboxer engines
1900cc engine code SP, DG, DH or GW
2100cc all
Specifications:
Valves: 40.0 x 34.0 mm
Spark plug size: 14 mm
Paruzzi number : 71724
Fits :
Waterboxer engines
1900cc with engine code DF or EY
Specifications:
Valves: 40.0 x 34.0 mm
Spark plug size: 14 mm
Paruzzi number : 71723
Fits :
Type-4 engines
Specifications:
Bore: 93 mm
Stroke: 66 mm
Case Ø: 100 mm
Cylinder head Ø: 105 mm
Piston pin Ø: 24 mm
Paruzzi number : 41796
Fits :
Type-1 engines
Type-3 engines
CT/CZ engines
Specifications:
Stroke: 69 mm
Journal: VW Type-1
Material: 4140 chromoly
Paruzzi number : 01600
Fits :
Type-1 engines
Type-3 engines
CT/CZ engines
Specifications:
Stroke: 76 mm
Journal: VW Type-1
Material: 4340 chromoly
Paruzzi number : 01665
Fits :
Type-4 engines
Specifications:
Valve lash: 0.15 mm
Valve lift: 11.049 mm
Duration: 290°
Duration @ 1.27 mm: 252°
Lobe center: 108°
Paruzzi number : 41651
Fits :
Type-4 engines
Specifications:
Valve lash: 0.15 mm
Valve lift: 10.744 mm
Duration: 273°
Duration @ 1.27 mm: 234°
Lobe center: 108°
Paruzzi number : 41650
Fits :
Type-4 engines
Specifications:
Valve lash: 0.15 mm
Valve lift: 12.878 mm
Duration: 288°
Duration @ 1.27 mm: 250°
Lobe center: 108°
Paruzzi number : 41652
Fits :
Type-4 engines with mechanical lifters
Specifications:
Valve lash: 0.15 mm
Valve lift: intake 9.982 mm - exhaust 9.347 mm
Duration: intake 247°- exhaust 242°
Duration @ 1.27 mm: intake 210°- exhaust 206°
Lobe center: 108°
Paruzzi number : 41629
Fits :
Type-4 engines with hydraulic lifters
Specifications:
Valve lift: intake 8.357 mm - exhaust 7.925 mm
Duration: intake 223°- exhaust 229°
Duration @ 1.27 mm: intake 192°- exhaust 195°
Lobe center: 108°
Paruzzi number : 41630
Fits :
Waterboxer engines
Specifications:
Bore: 94 mm
Stroke: 69 mm
Cylinder material: Cast Iron
Piston material: Hypereutectic aluminum alloy
Piston dish capacity: 45cc
Compression height: 40.01 mm
Piston pin Ø: 24 mm
Paruzzi number : 71700
Fits :
Type-4 engines
Specifications:
Bore: 94 mm
Stroke: 71 mm
Case Ø: 100 mm
Cylinder head Ø: 105 mm
Piston pin Ø: 24 mm
Paruzzi number : 41797
Fits :
Type-1 engines
Type-3 engines
Specifications:
Bore: 85.5 mm
Stroke: 69 mm
Case Ø: 90 mm
Cylinder head Ø: 94 mm
Piston pin Ø: 22 mm
Paruzzi number : 01698