Engines
Cooper JAP dry-sump 500cc single
Note alloy head and barrel
j
Norton Manx
Carlheim JAP 8-80 twin
JAWA DT 500 (JAP continuation)
JAWA 888 ("baby 500")
Ariel Red Hunter
500cc Club of America
J.A.P. 4-B speedway
note alloy "muff" barrel