Topic: 73 CB500F Engine Swap

[Honda3]

My head gasket, or those little oil flow o-rings in the engine, have sprung a leak. Engine has 24k miles on it.

Im thinking of taking the 500F engine out and putting another engine in, maybe a 550F or something.

Offhand, does anyone know what other engines are an easy swap into a 1973 Honda CB500F?

Thanks!

[bryanj]

550 as long as you use the 550 rh rear engine mount plate. 650 but you need all the electronic ignition as well.