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Information sought for a JAP Ligenza engine

Information sought for a JAP Ligenza engine

Information sought for a JAP Ligenza engine

Information sought for a JAP Ligenza engine

Information sought for a JAP Ligenza engine

Information sought for a JAP Ligenza engine

Information sought for a JAP Ligenza engine

  • Information sought for a JAP Ligenza engine
  • Information sought for a JAP Ligenza engine
  • Information sought for a JAP Ligenza engine
  • Information sought for a JAP Ligenza engine
  • Information sought for a JAP Ligenza engine
  • Information sought for a JAP Ligenza engine

Letter to the editor

Good morning, 

I am trying to trace the origin of a vintage motorbike which has a JAP Ligenza engine with the following characters stamped on it: KO CZ 857 X 85 39368. Thank you in advance for your kind attention.
 
Kind regards,
Officine Biaschelli

 
Published:
Friday June 14th, 2024

Comments

Jonas
18 June 2024, 11:12
A British J.A.P. engine built under licence, most likely in Italy. The letters and numbers correspond with the J.A.P. engine code system.
K = 500cc
O = overhead valves
C = sports engine
Z = dry sump lubrication
85.7x85 = bore and stroke

According to the 1939 edition of Pitman's book of the J.A.P., dry-sump lubrication became available in 1932 on standard motorcycle engines. So this engine was most likely built between 1932 and the Second World War.
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Comment
Tony Press
16 June 2024, 06:10
Is the marking not a motor built under licence from J. A. Prestwich?
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