Post by
foxfan1992 »
https://forums.nicoclub.com/foxfan1992-u221260.html
Sat Jun 28, 2014 10:59 pm
While my truck is situated much further north than yours is, I too was suffering overheating issues and a leaking radiator. As I left it and put it off further and further my truck overheated time and time again until I did get the radiator replaced, and then it still overheated once again after the radiator was replaced, which blew the headgasket. Fortunately the blown headgasket was resealed once the pressure built up and so it didn't affect the engine's running, and in the fall the truck spent two months in the garage having a new headgasket and cylinder head fitted. My old cylinder head had warped beyond repair, but the engine was burning oil as the cylinder head was leaking.
After replacing the cylinder head and fitted a new headgasket, the truck hasn't overheated since.
All in all, what I suggest is checking the radiator for leaks when the engine overheats, and if it isn't the radiator it could be your water pump, or maybe there's something else wrong with your cylinder head or a headgasket failure.
I can't help you with the info about what may be different, as my 720 is a regular king cab model. It has a Nissan Z24 engine and mechanical water pump that the fan is attached to on the outside, so as the water pump rotates so does the fan. My truck also lacks air conditioning.