Oil Tempreture 291*
12-18-2016, 08:00 PM
#22
Originally Posted by truckdoug
okay i see where you're going. bearing damage?
i'm working on my psychic abilities, i'll try one
I see a charge for $28 from blackstone labs on TurboLSbirds' credit card in the near future.
i'm working on my psychic abilities, i'll try one
I see a charge for $28 from blackstone labs on TurboLSbirds' credit card in the near future.
12-18-2016, 08:02 PM
#24
Originally Posted by TURBOLSBIRD
No just seems like a lot of temp. I never even maxed it out yet. This log was about a 30 minute run.
12-18-2016, 08:29 PM
#25
Over 250* raises real concerns. The oil temp at crank/rod bearings is much higher than sump temp. Oil failure and resulting bearing failure becomes a concern. Engine components rely on direct contact with oil to cool much more than transfer into cooling system (which has been reduced with filled block)
What did engine builder say when oil temps were mentioned?
For pleasure reading, check out some 3rd party insight on oil performance and analysis https://540ratblog.wordpress.com/
Search "thermal" will get you to some insightful info.
What did engine builder say when oil temps were mentioned?
For pleasure reading, check out some 3rd party insight on oil performance and analysis https://540ratblog.wordpress.com/
Search "thermal" will get you to some insightful info.
12-19-2016, 06:21 AM
#27
9 Second Club
As with anything, there is a process to follow, start at step 1. People seem to jump to step 3 ,4 ,5 or whatever first.
The user on the Holley forum is posting a lot of data for people to use. He doesnt appear to be a Holley tech, so is he also offering verifiable proof he has tested all the sensors and confirmed his calibration data is accurate ?
Or is he just posting what he things should be right mathematically ?
The latter is not a good idea.
if Holley can confirm all his data is correct for those sensors, then that should be fine. Otherwise, test the damn things !
12-19-2016, 06:22 AM
#28
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Under load they will rise quickly 267 was cruising at one point in the graph. when i got on it went to 284 rather quickly.
12-19-2016, 11:50 AM
#32
12-19-2016, 03:52 PM
#34
9 Second Club
boiling water...or more appropriately steam would be a more reliable indicator.
And ensure the sensor is within the heat for a good 10-20s before taking the reading, as most sensors like this have very slow response times.
Although if you can safely take oil up to a higher temp and measure it some other way to confirm, all the better.
And ensure the sensor is within the heat for a good 10-20s before taking the reading, as most sensors like this have very slow response times.
Although if you can safely take oil up to a higher temp and measure it some other way to confirm, all the better.
12-31-2016, 01:37 PM
#37
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I finally got time to do a test on the sensor. I took a deep fryer and put the Autometer 2259 sensor and a GM head coolant sensor in it.
Here are the data points i entered.
OHMS TEMP
20 340
25 320
32 300
42 280
65 250
89 230
105 220
119 212
123 210
149 200
175 190
253 170
374 150
460 140
708 120
1123 100
The graph is below. Fire away!
Here are the data points i entered.
OHMS TEMP
20 340
25 320
32 300
42 280
65 250
89 230
105 220
119 212
123 210
149 200
175 190
253 170
374 150
460 140
708 120
1123 100
The graph is below. Fire away!
12-31-2016, 03:59 PM
#38
9 Second Club
Both appear similar...however, I would not trust any automotive coolant sensor above around 240degF
The resistance of most are very non linear around that temp and would not be reliable above it. Unless you know the sensor has been proven above this.
You'd be better to test against a thermocouple or something actually intended for the temperatures you are testing.
Definitely a good idea for the test though.....did the fryer have a temp indicator on it ?
Although even despite the above....clearly your oil temps must be pretty damn high.
The resistance of most are very non linear around that temp and would not be reliable above it. Unless you know the sensor has been proven above this.
You'd be better to test against a thermocouple or something actually intended for the temperatures you are testing.
Definitely a good idea for the test though.....did the fryer have a temp indicator on it ?
Although even despite the above....clearly your oil temps must be pretty damn high.
12-31-2016, 06:01 PM
#40
Does the temp sensor read accurately when measuring oil temp in engine compared to stove top temp test?