Post
by jorgy » Thu Feb 17, 2011 10:27 pm
Hi Geff
A V6 PRV is very pleasant. The engine just purrs, from idle up to the red zone -it's worlds apart from the 2.1td. Although I like my 21td, I still believe that the engine's refinement is below the class of the XM as a car (at least in S1-S1.5 guise, I don't know if S2's are more refined/better insulated). My V6 is a manual 12v, so significantly faster than the automatics you get in the UK -unless u manage to find a 24v manual, which is really really fast.
The only inherent problem of the 12v PRVs I know of is that their exhaust manifolds are sensitive and can develop cracks and become noisy; also, they can break their bolts. The 24v don't suffer from these afaik.
The first 24v (90-91') quickly suffered (a few 10s thousand miles) from cam destruction due to the cam followers becoming too hot -there was only 1 follower for 2 exhaust valves (while the inlet valves had a follower each). There shouldn't be any such engine around now as they have been recalled from Cit to replace some bits with ceramic ones, but do check in case u find some barned low-miles example.
Otherwise, the 12v engine is undestructible. It's the auto gearboxes that are the problem. I have owned mine since 2004 in the UK, and parts have been not a great problem overall, but I'm stocking a few engine-specific stuff anyway e.g. cooling pipes. The PRV is a rare engine in the UK and not the easiest to find parts for but until recently, in the worst case, you could always find the part you wantred in some Cit dealership somewhere in the UK. However, only part I really couldn't find anywhere in the UK was the waterpump, it had to be ordered from Cit France if I wanted one. Finally I found a firm in England that refurbishes pumps, and with £70 my old pump was good again. In late 2010 I decided to take the big step and put new camchains etc on the engine, and with a little bit of search (including at Renault's), all the parts were gathered.
So if petrol is not a problem for you, and are ready to accept the gearbox risk, definitely go for one.
cheers
George
'94 XM 3.0 12v LHD Manual, DIRAVI, Black - @138k, now 175k - RP6336 - SORN
'93 XM 2.1TD SED Manual, Pearl Emerald Green - @80k, now 115k - RP6077
SOLD '99 2.0 Xantia HDi Exclusive, Silver -118k to 130k
'00 XM 3.0 24v Exclusive, Silver - @117k