Cylinder head ring 85.50 mm -> 77.00 mm Beetle,Karmann Ghia, Split

From 08/65 VW came with a more powerful 1300cc engine on the market, in order to be used as a better alternative for the 1200cc engine. This engine has been used till the end of the production of 1303 sedan -07/75. During these 10 years many of such 1300cc engines have been made for single inlet as well as double inlet. Many 1300cc double inlet cylinder heads show cracks due to heavy use between the in-outlet valve and the ignition plug hole. So replacement will be necessary during revision. The demand after these cylinder heads has been increased partly to above described phenomenon, though there is no production, like there is one for 1600cc double port cylinder heads.