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Water Temp sender in water pump - 351C
#31
Thanks for the diagrams. Those are definitely worth a thousand words.

Good idea to drill it out for a 1/2" NPT tap, the walls on the fittings are thicker than the thin wall press-in tube. The inside diameter of the 1/2" fitting will not be restrictive.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#32
Well for what it was worth I swapped the temp senders around today

Virtually no difference in temperature with it running at a steady 85C/185F
The idiot light comes on later perhaps at 82C/180F but may have got previous temp wrong
Probably the only difference noted was previously with the gauge sender in the "wrong" spot at the water pump the temp went to about 92C/198F then dropped which would indicate the thermostat opening and the thermo fan coming on.
Did not get this rise/fall with the gauge sender in the block although only ran it once for this

So although there is a slight difference if anyone else was to use two senders just put the light only sender in the water pump which incidentally is also 3/8 NPT thread - my water pump is a Milodon alloy pump(actually GMB)
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#33
(05-31-2019, 08:26 PM)Don C Wrote: Thanks for the diagrams. Those are definitely worth a thousand words.

Good idea to drill it out for a 1/2" NPT tap, the walls on the fittings are thicker than the thin wall press-in tube. The inside diameter of the 1/2" fitting will not be restrictive.

Just trying to help. This site is the best and it's because of contributors like you Don. I know I have personally benefited from your expertise and sometimes I get motivated enough to share some of the things I have learned. It's feels good to help others.

Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic! thumb

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#34
i am also looking at using these two ports as well, so what I did was I baught two identical temp gages and hooked one to each port, there I only 3 degrees difference at all levels of temp, I now have my electric fans on one and temp gage on the other. they both work when suppost to. the fan is set to turn on at 185 and they turn on when my temp gage hits just below 190. works great.
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#35
(06-11-2019, 07:49 PM)72mustang67gto Wrote: i am also looking at using these two ports as well, so what I did was I baught two identical temp gages and hooked one to each port, there I only 3 degrees difference at all levels of temp, I now have my electric fans on one and temp gage on the other. they both work when suppost to. the fan is set to turn on at 185 and they turn on when my temp gage hits just below 190. works great.

I ended up doing the same thing... sort of. I didn't have a gauge that would show the temp, so switched the sensors around and had the factory gauge in both locations and the fan in both locations. As far as I could tell it worked exactly the same in both places. The gauge showed the same cool and at temp and the fans seemed to turn on at the same time. Took the temp with an IR thermometer around the sensors in both locations and they were about the same. On different days with about the same outside temp the gauge and fans both took almost exactly the same amount of time to respond. Right now I have the fan in the factory location and the temp in the water pump. So for me this seems like it will work fine.

As usual, thanks for all the feedback in this thread. Always great info and discussion.
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