No, it cannot. Not a "standard" rigid frame that it. There are now several manufacturers that make rigid frames specifically for rubber mount sportsters, just do a web search. Be aware though that a rubber mounted sporty engine in a rigid frame is now a rigid. The benefits (if there were any) to having a rubber mounted engine no longer exist.
buy a 2004 sportster..it has a rubber mounted engine that isolates vibration
the easy answer is no, - as the frame and the engine housing is completely different.
To allow some movement, an engine directly hard mounted to a frame will break the steel from the torque, the rubber bushings allow a little movement and prevent vibration.
There are many places one might go to purchase a Sportster frame. In addition to the official brand website, one might also try purchasing from the eBay website.
On a 1986-2003 there is a drain hose. Look under the motor and there is a rubber hose with a worm clamp on it, it attaches to a bung on the frame. Loosen the clamp and remove the hose from the bung.
On Fuel Injected vehicles it is inside the fuel tank mounted on top. On non-fuel injected vehicles it is normally mounted to the engine block on the front. It may also have an electric pump mounted to the frame rail.
All vehicles have a frame on which the chassis is mounted.
== == On the passenger's side of the engine down near the bottom mounted to the frame.
it is passenger side below the intake mounted in fuel line by the frame
On Fuel Injected vehicles it is inside the fuel tank mounted on top. On non-fuel injected vehicles it is normally mounted to the engine block on the front. It may also have an electric pump mounted to the frame rail.
no you can't because of the cases and frame
Motor mounts (engine mounts) are used to connect a car engine to the car frame. They are usually made of rubber and metal. The metal portion connects to the engine on one side and to the frame on the other. The rubber is in-between to provide some flexibility (so engine shake doesn't cause the car to shake). Newer cars may use slightly different mounts, however, there purpose is the same. Provide the connection from the engine to the car frame. The number of motor mounts varies from car to car. Hope this helps.