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Last year, I had my radiator recored (3 or 4 row...can remember which), and upgraded to a 6 blade fan, but the temp gauge starts to creep up pretty high and pretty quickly on a hot day in slow traffic. I hesitate to go from a 180 to a 160 degree thermostat. The shop used a laser pointing temp gauge which shows that the thermostat housing area is indeed staying right around 180 degrees, but when you point the thing a little farther back, and on the intake, and areas near the temp sender, sure enough the temp is in the 200's. Dunno what it should be in those areas, but it just makes uncomfortable thinking that it could be running hot.
Timing is OK, new cap, etc. I see that Summit Racing sells "FlowKooler Mechanical Water Pumps." Anyone have any experience with these? Wondering if they work and are really any good. Here is the narrative from
Get 30 percent extra coolant flow.
FlowKooler water pumps solve low-speed heating problems by doubling the water flow rate at low RPM and idle. At 3,500 RPM the flow rate returns to normal to prevent too much water flow at high speed and they last longer than a stock replacement. These pumps use a specially designed steel plate on the impeller that traps water, eliminates cavitation, increases flow, and reduces engine temperatures. Lou
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