Quote:
Originally Posted by Towmaster
Make sure there is no air gap between your fan shroud and the radiator. If there is a gap there then air will pass through it rather than be sucked through the radiator, therefore decreasing the effect of your thermo fan. You can buy adhesive rubber of varying thicknesses from Clark rubber. This is perfect for sticking in any gaps between your fan and the radiator. These little 5% differences really add up...... Having said that my LS sits around the 200 - 210 mark in racing situations.
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Good suggestion. If there is a gap, when sitting in traffic, the fan will pull hot air from the engine bay, through the gap in front of the radiator, and then back through the radiator. Fresh/cool air vs 120+ air makes a big difference. I had an excavator that would over heat...turns out the shroud around the edge of the radiator was bent and allowed the hot air to cycle back through the radiator. Sometimes it is the simplest of things.