bentley sez:

for air-cooled vanagon engines:
 nominal ........... 85-131 psi
 minimum ........... 73 psi
 max diff .......... 44 psi between any two cylinders

for water-cooled vanagon engines (1.9 and 2.1)
 nominal ........... 145-189 psi
 minimum ........... 116 psi
 max diff .......... 44 psi between any two cylinders