Converting a 6/1

[oiler]

Since it seems impossible to sell Listers here i Denmark I would like to try to convert one of them,possibly my Startomatic, into an air comressor.
But how? Do I need a special camshaft so both valves open on each intake stroke or should I make them open by atmosferic pressure.
Can I use the injector hole as seat for a delevery valve?

[LowGear]

Holy Smokes Oiler,

How do you say Blaspheme in Danish?

Casey

[oiler]

Casey. It's blasfemi  But again. What can I do, there simply isn't a marked for those engines around here, sadly