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Airflow around the pan is part of the oil cooling design. You should move your oil temp sender to the oil filter housing. That will be a better average of oil temp within the engine. Another way would be to have the sender in a constant fall of oil from the crankshaft, or within an oil drainback within one cylinder head. |
This has done me good for 15 years. That cap tube is running to an old Smiths mechanical oil temp gauge.
http://www.clubcobra.com/photopost/d...using_Trim.jpg |
Patricks car above is a good example.
The sender gets doused with hot oil leaving the crank,cam,heads draining etc BEFORE the oil gets a chance to be cooled off in the pan. Reading near the bottom of the pan is as cool as the oil could get prior to the oil being picked up again by the oil pump. Just like a coolant temp sender is fitted at the hottest part of the engine prior to the coolant going to the radiator, the oil temp sender is best located as like Patricks or my case as above. |
It would absolutely never occur to me, when diagnosing funky oil and water temperature changes, to look and see if the gauges were switched. I would have to pull one of the senders out and pop it in a pot of boiling water. Then, when I looked at the dash, I would start laughing. That's one of those goofy stories you put in a car magazine, which I haven't actually seen in years now.:cool:
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That could explain the bit of lag in the oil temp reading on my 67 GTX. I hollowed out an oil pan drain plug and mounted the sender in it for the electrical gage (bottom of pan). It does take a bit of driving to get the oil up to temp but after awhile it's up to 180 - 195 thereabouts which should be close to water temp from gage and IR gun readings. But it's only 6 quarts capacity compared to the Cobra's 8 quarts so they seem to warm up at about the same rate overall.
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Whether bypassed to the pan or pumped into the engine, the rate of flow in the oil pan will ensure any cooling in the pan is minimal. We don't need to worry about whether the oil temperature is off by fractions of a degree, which is the likely effect of such cooling at those flow rates. My temperature sender is in the lower front wall of the pan - I'm not in the least bit concerned about how accurate it is. |
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How can a load, smelly, uncomfortable, grumpy, uncompromising (OK, that one could be feminine) car be feminine? |
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BD |
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