overheating is back

[Scott Larson]

Sue, it's what you can't see buried in the rad fins that can cause all the hub-bub. If you hook-up a garden hose to your water heater so you get HOT water and blast out all the crud from the engine side of the rad, cleaning the entire rad side to side and top to bottom, that should certainly help. Put a nozzle on the hose end so you get a hot, high-pressure stream! Best of luck and don't scald yourself!!

[Triathlete]

But use caution to not bend the fins.

[Scott Larson]

But use caution to not bend the fins.

Good point! If you do have alot of bent fins, you can straighten them using a tool called a fin comb available at any HVAC supply store. (Heating, ventilation and air conditioning.)

[VX KAT]

Trying to find out if my fan blades are positioned more forward into the shroud than other VXs.
Kirk, how's this compare to yours?
Anybody have any comparisons, thoughts or input??
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These two shots are straight on of the shroud & fan blades.
It seems like the base of the blades are actually further rearward than the tips of the blades









From passenger side, can see the one blade sticking out:




Dave's holding a ruler flush against the blades so it's easier to see how far they clear the shroud






Distance/gap is about 1/2", if that.



I know it's a totally different engine, etc...and it could be apples to oranges, but on both the GX and Dave's FJ, the blades stick out at least 1 1/4" outside the shroud:

[VX KAT]

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.Just thought of a question... the pics of the FFD 17" fan set-up show it has the fan blades completely within the shroud.....so how does that improve air volume???

[Y33TREKker]

Would a person have to account for some flex in the blades when they're turning? Taking their orientation into account, and the fact that they're plastic, it seems to me that once they start spinning, the act of cutting through the air would have them flexing "inward" toward the radiator. Do they appear to stick out of the shroud the same distance when the engine is running as they do when it's not?