Well the boiler diameter is 2 1/4"x 6" long, flywheel is a 4 spoke with a 4" diameter.
I'm assuming yours are rough measurements and we have the same engine, BUT mine has a red engine base where yours is a light blue... why, oh why does there have to be variations in the hobby?? Now I need to find this one

I am getting boiler diameter of about 2.360" and 2.285" inside the ends and just a hair over 6" long with a 4 spoke flywheel of 3.910"
These engines turn over so smooth and I like the spring setup holding the cylinder tight



Someone else has made a decorative screw in plug instead of the usual cork
