Steam produced in the boiler will enter the engine under high pressure though an assortment of copper pipes and brass fittings and is designed to be easily removed through the use of the two custom steel flanges.

Turning the main body of the flanges which will mount directly to the cylinders.
 

Using the bolt hole circle function on the DRO, it was easy to layout where the 3 flange cover mounting holes were going to go.
 

Drilling and tapping the mounting holes for the flange covers.
 

Machining four flats for tightening the main flange bodies to the cylinders with a wrench.
 

Flange covers before drilling the mounting holes and side holes for the piping.
 

Drilling through holes which will be used to mount the flange covers to the main flange bodies.
 

Flats were machined and then a hole was drilled and tapped in the side for the steam piping.
 

Steam header assembly ready to mount to the main flange bodies which are already on the cylinders. The temporary pressure valve and gauge is for testing running the engine on compressed air
 

Completed steam header mounted to the cylinders. Hi-temp gasket material is sandwiched between the flange halves to ensure against leaks. Almost ready for air!