The reason why I want to do it is due to my second battery sitting right next to the exhaust branches and turbo. If I can reduce the heat transfer by a few degrees it will have a definite positive on the life expectancy of my deep cycle battery. I must just get around to doing it. I'm still toying with the idea to fit the battery under the Patrol, but the space where I want to fit it is really tight and I need to spend a lot of time working it out nicely to prevent any shorting of the poles on the bodywork.
I also believe that this will have a positive impact on the air temperature that comes through the air vents when the aircon is NOT on, as the air intake is right between the firewall behind the turbo and the windscreen.
I don't believe it will have an impact on engine temps though, however on the diesel the temperature measured will be more accurate as no, or very little heat dissipation can take place between the cylinder head and the temp probe. I doubt that the temp difference will be any more than 5 deg C. as its so close to the cylinder head.
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
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