Originally Posted by razzledog
If so many of the early Carnivals died, why do I see so many of them driving around each day...
Plenty of them tootling around here in Tas too.
None are blowing smoke or overheating, so what's their secret?
Good question, maybe if they came out of the factory with good liner nip and haven't been mistreated (not overheated, maintenance kept up to them, especially the cooling system) they may be good as any other contemporary mill. The Rover guys seem to think so. Mine's been fine (although things were much improved by ’04).
Conglomerate's view if I understand it correctly is that once the engine has overheated (e.g. loss of coolant, heavy towing) the alloy in the block irreversibly changes & goes soft, which allows the liners to sink and have insufficient nip in the HG. Perhaps that could explain why many engines that failed, failed again after repair? Add to that the quality issues Rover had (and Kia unfortunately 'copied') with liner height and choice of HG.
It must be 6 years or so now since the last K5s shipped here, and 9 since the particularly bad ones, so it could be that the engines with build problems are out of the system now. The remainder are probably as good as any other as long as they are treated well, as all engines should be. The aero piston engines I fly behind are reliable & robust provided you treat them as if they're not.
I wonder how the Nanjing built KV6 is going.