thanks riick,just heard that the 4.6 overheated more than the 4.0 but having not owned either i did not no???
hi rob , my feelings tbh with the overheating v8 scenario is that its mostly urban myth , over the years ive owned all the " bad for overheating engines" the 3.9 , the 4.0 , 4.2 and my present 4.6 and covered christ knows how many thousands of miles and although ive had a couple of instances ( usually very soon after intial purchase) of overheating i have always managed to get home , ive never had to do the head gaskets or any other of the major repairs that some seem to get.
a prime example of this scare mongering about cracked blocks and scrap engines is my present 4.6 a 1997 model with a 148`000 on the clock it was advertised on ebay for sale but with overheating problems , i went to look at the car , which apart from overheating had only just 2 days before passed its mot was in excellent overall condition , the guy told me " its at least a cracked head my garage told me and more than likely its got a cracked block" i had it running and thought "bollocks"

it turned out nothing more than a blocked bleed off hose , 1/2 hours work , i changed the radiator just as a matter of course , the point i am trying to make is because this guy had heard that these engines are " prone " to this problem he ended up losing a fortune on the car and i got an absolute bargain

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i truely believe that a lot of the overheating problems reported on these pages could have been easily avoided by better maintainance and taking more notice of the temp gauge and this theory is based on 37yrs as a motor mechanic , my own personal veiws only though you understand

i hope this helps.
rick.
the best way i can describe the rover v8 is to liken it to a woman , it loves to be treated well and cared for , god help you if you mistreat it or or abuse it , it will let you know in no uncertain terms and will never let you forget it .