i looked in the vendor forum, didn't see anything. i need to shoot him a PM and find out the details.
'97 Fan Clutch
- Thread starter dgerst
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i looked in the vendor forum, didn't see anything. i need to shoot him a PM and find out the details.
Agree, if it is out of spec, but I have never seen one out of spec. All that I have tested have been very consistent, at what temp was yours fully open before you set it?
If you monitor fan output temp, you will see that it's in the 170-190F range when idling/stop & go traffic on hot days. For example the Eaton I did yesterday started opening at 120F and fully open at ~160F. So at low motor/rig speeds it's going to be fully open.
If I had set it to 95/135F it would still be fully open at low motor/rig speeds, no advantage, fully open = fully open. But also would be fully open at highway cruise speed ~130-140F wasting energy where it's not needed.
I have set them all over and have never seen an measurable advantage to setting them too cool. When thicker fluid is used, each valve opening is stronger than stock. Mine is set the other way (IIRC ~125-175F) and works great.
I'm a convert to this theory of filling it with thicker fluid but setting initial thermostat opening to a higher temp rather than lower. Initially filled the new-style blue hub with 15k, set at 95*F in a water bath. It ran nearly constantly even in temperate weather & was too noisy for my taste. Backed it off to 105*F first opening; still essentially the same performance. Finally set to 135*F; it now pulls enough air that AC works well and temps stay below 195*F in 90*F ambient temps but doesn't drone incessantly & unnecessarily.
What kind of fan clutch is this in the OP's pic? It's what I have in my '96 LX450 and I'm wondering what kind of fluid to put in...10k or 20k CST?
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