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Listen to GoJeep.....He is correct!!! And if you chose to believe otherwise, you are uninformed and delusional.....But cooling issues most likely aren't a problem Down Under this time of year...it just might be quite cool in GoJeep's neck of the woods.
one of my buddies had his jeep overheating for about an hour and a half steaming pouring out from under the hood and he just kept saying its a cast head it wont warp i thought he was crazy. but sure enough it didnt he ran that way for well over an hour one night 4wheeling and no problems. as far as the fans im running 1 16 from autozone and 1 from a hyunda works quite well and very cheap
The higher the temp you can get the more efficient your engine is. Engineers are running the temperatures higher as materials and designs improve. For every 10F under 180F your engine wear rate doubles due to chemical reactions on the surface of the cylinder walls. Running a 160F thermostat QUADRUPLES your engine wear rate. For every mile you drive your engine wears like it has been driven four miles. The chemical reactions drop little abrasive oxide particles in the oil that eats up the bearings and everything else as well.
??? Are you sure you worded this the way you wanted to? The new materials engineers are using such as aluminum, composites, and other polymers generally dissapate heat faster than materials used in the past in order to reduce the amount of heat produced and retained by the engine. This is one of the main reasons today's little 4cyl and 6cyl engine have a lot higher power output, along with the advances in electronics and tuning of course. The hotter the spark, the more complete the burn and more efficient but you also need cool dense air for effeciency and power. Excess heat won't allow the engine to get cool air and can cause detonation in the intake plenum or manifold if it becomes to hot. Higher heat also breaks down lubricants which can lead to premature wear of all of your internal engine parts. An engine has to be warm but not to hot to run at it's peak. There is a limit to how hot an engine can be and still be efficient and continue to produce HP safely without the risk of destroying itself.
