I have an '80 2.0L motor which needs a new crank (flywheel and fan fell off), cam (lugged to death), and a cylinder head (thermostat failed, cooked the #2-4 side). I'm planning to use a set of OEM Koblenschmidt 914 2.0L pistons for a bit more power, and if I have to buy a new head, I may as well buy ones with bigger valves. The van has a/c, and I'd like to be able to use it on the highway and still be able to pass cars. :)

Question #1:
 I understand that the 1.8L and 2.0L aircooled bus motors were fairly similar except on the stroke and valve size. Local VW guys claim the 1.8L had bigger valves, but that those heads would have to be bored to accept 2.0L cylinders. What's the straight dope on this?

Question #2:
The cam is toast, due to excessive lugging by one of the PO's. I'd like to keep it hydraulic. Are there any mild street cams out there that can work with the 914 pistons and 1.8L heads?

Question #3:
The van has an excellent a/c unit, hoses are in good order, etc. However, the compressor is AWOL, as are the mounting brackets. I noticed the motor has a small pulley behind the fan, and the cooling tin is distorted to accomidate a compressor. Supposedly, Bus Depot sells rotary compressor conversions for the older York-equipped vans. Does this include all the hardware I'll need to put a compressor in, and where does the belt go?
I don't see anywhere on the tin where it could get from that small pulley out to where the compressor would mount.
                   Thanks!

                   Sean L.

                '86 GL "Blitzen"
                '83 GL "Belle"
                '82 GL Diesel "Donder"
                '80 "First Lady"

                All siebensitzers! :)