Gallery

The brass engine is the same as the aluminum vari-compression engine that is in the single cylinder vertical section.....It is a 1" bore X 1" stroke, MJN ignition, electric fan cooled, timing belt driven over head cam....And the "squish" area of the engine can be adjusted from approximately. .437" down to about .045", by just a simple mechanical adjustment..........Members can view the First ( aluminum ) version of the engine and parts in the vertical single section of the

Fueled and ready to go, the engine was started up and running (rough) in about five minutes.........I set timing and carb , still the engine was not running good.........I found that I had set the valve lash too tight........I had to remove the cam rack, (four screws) remove the cam followers and reduce the shims (which sets the valve lash) by .010.........This allowed the valves to seat, and the engine was running fine at this point..........The engine is running tight at this point ( as could be expected) and has two (small) oil leaks at this time......The engine is running from a good idle up to aprox. 6000 RPM high end..........I am planning to try to get some time on the engine and then tear the engine down, and clean up the oil leaks........The engine is now rope starting at this time, so I think that it is getting close to OK