Hello does anyone know where I could find some 2d schematics for any mechanical parts, perhaps something like: an engine block, cam shaft, pneumatic valve, hydraulic, or anything else that would look good in a portfolio rather then just simple drilling jigs ect.Any help would be greatly appreciated.

Look at www.cben.netMaybe there is something you can use.

I've gotten many blocks from www.cben.net.  That is the first place I go to when I need something.