Okay, we've moved beyond the recrimination stage. My mate's Megane ha not only lost its timing belt causing valve damage but apparently four valve guides are "cracked" too. Mr Mechanic has said they are not available from Renault, and he needs a new cylinder head at £1200.
This sounds odd, the car is a P reg Renault Megane 1.9D - I thought one of the most popular diesel engines around? He's phoning a main dealer in the morning to try for confirmation but has anyone got any nuggets to add here?
I'd've thought that at a push a good mechanic / machinist could avail himself of valve guide inserts of an appropriate size, not necessarily the allegedly unavailable ones from Renault.
I don't know much about this engine, so before I advise this guy to cross-examine Mr Mechanic I'd like to know more. Anyone?