iceracer said:
There actually were different engines. The type one ended at 1600 cc and had the vertical fan.
The type 2 engine aka Bus was 2000 cc, although some early versions were 1600. It had the fan on the end of the crankshaft.
My memory tells me that US 411,s had the type 2 engine.
It's been a long time when I worked for a VW dealer in that time period
more info most probably do not give a pile about , \
Type 4 / 914 engines have basically the same crankcase ,
they came in 1700cc , 1800cc , and 2 liter which was only 1911cc
They also sold a 1600 type 4 that was used in Super V racing , I had a new one in the crate !
USA buses 1972 and later had Type 4 motors , but most of Europe kept the 1600cc bug based motor as gasoline was expensive.
The normal Type one bug motor used the same basic engine case for 1200cc, 1300cc, 1500cc and 1600cc
1200cc was our "40 horse" that started in 1961 thru 1965 in the USA but went up to the 1980s in the Mexican bugs that were sold in Germany ,
1300cc motor used 69mm stroke cranks as did 1500-1600cc , the USA had them in 1966 only but they were sold in Europe later for Countries that taxed cars by engine size ( Italy was one ) , they were even in buses ! (77mm bore)
1500cc motor started in 1962 Type 3 Squarebacks and Notchbacks , and in 1964 -67 buses , (83mm bore)
1600s started in 1968 buses and I think 1966 Type 3 Squarebacks and Notchbacks. , and I think 1970 bugs (85.5 bore)
we could get into cylinder heads but thats as confusing !
I think that is all for now , I think I got most of that correct , Yes I know too much about VWs ,