regarding simulation: getting correct dimensions of single cylinder diesel engine

hi everybody , i am a student of National Institute of Technology Rourkela ,and i am trying to design a diesel engine in catia v5, Pro/e , but i am not able to get correct dimensions of engine. so that create problem for me, if you can help me to get the correct dimension of single cylinder diesel engine , i am very thankful to him . or tell me link or company so i can contact him.

Fine Fine Fine!!!

Take Down....

Inner Dia of Cyl: 50 mm
Cyl type.... : Air Cooled Type...(Takedown the Figure Below...)
pis dia : 49 mm
crrings: 1 mm thick

if you want the conrodand crank dia also ........


Let me see how you modelled the Cylinder and Pistion With Above Dimensions...