Cast Iron Piston Pump as a steam engine?

[jake]

Hi there,

I'm interested in small-scale steam engines...just starting to learn about this, so, forgive me if this is a really dumb question...but could I use a cast iron piston pump such as the one in the attached picture in a steam engine? If so, what modifications might I have to make? What safety precautions? I would be interested in hearing any of your opinions on this, or, if you have any better ideas on how to get started in this.

Thanks,

Jake

http://img849.imageshack.us/i/11202363640.jpg/

[machinemaker]

You may want to look at the backyardmetalcasting.com site and do a search for myfordboy on youtube. Both have some model steam and hit or miss engines.
kent

[keydl]

The valving is the bug in using a pump for a steam engine.

A gas engine with the cam action changed would be simpler - 1:1 on the cam gears or a grind on the cam with 2 lobes. The other problem is the separation of the crankcase oil and condensate - so pick a pressure oiled engine.

The boiler is a good deal more complicated but hot water pressure washers have the parts needed.