Agree with the last comment made about so called 'reconditioned'. A bloke can buy some scrapyard salvage engines, steam clean them and paint the blocks so they look like new then sell them as reconditioned. Most people wouldn't know the difference until the guy they got to fit it in their car for them turned around and said "where was it you got this engine?" or when the engine blew.
Jackson's comment about paying �75 - �100 for an engine is technically correct. You can go to a scrapyard and buy an untested engine with no guarantee for about that amount.....but you might be buying just that....scrap metal. Then you've got to get someone to fit it for you. Setting fire to a bagful of cash is an easier way to waste money.
The worst car I ever ever owned was a Rover 214...and the engine went at 59,000 miles. The engine specialist mate of mine I got to take a look at it said bits (oil seals) were missing out of the engine that should have been built into it when it was made.
Again, sorry for your bad luck. I wouldn't throw good money after bad rubbish like a Rover.