Can anyone tell me if an AV505 engine from an Ergo Mercury will fit into a 1959 MK11 Mercury, I am asking for a friend who is selling the engine to someone who wants to fit it in the MK11 but has been told that there are some differences at the back with a split casing etc.
The one thing I know which is different and which may potentially cause a problem is that the timing gears of a 470 engine are cut to a different angle to those on a 505. This would mean that any auxiliaries driven directly off the timing case will not fit.
Edit add: This will be a major problem if the recipient vehicle has vacuum or vacuum hydraulic brakes.