The Official Extinct Inline Thermostat Mod Thread
#111
@Extinct For clarity when you say 100 deg F over ambient is that thermostat dependent ie 180 or 170 or in general ? Mine goes in this afternoon, seems like a nice job to do in 90 deg heat in the sun
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Richard Gallant (06-21-2021)
#112
Exactly this. If you run a 170, she will run 175 if the temp is 75. If the temp is 65 she will run 170. If the temp 90 she will run 190. All examples are at 70 mph, relatively flat grade. Heavy grade or pulling a heavy trailer will be more. Idle will be lower. As DCDisco2 states, the radiator does not have the heat transfer capacity to get rid of more heat than 100 over ambient at the fuel usage at 70mph. More fuel (steeep grade) is more BTU, less fuel (idle, coasting) is less BTU.
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Richard Gallant (06-21-2021)
#114
#115
Does humidity play a factor? 95 degrees in Florida. 95 in Nevada?
Intake temp of 84. Never have seen mine that low. Always in the 130’s like TimInNova is showing.
also could swear my temps go up 5-8 degrees when I have the aluminum coolant tank installed. Maybe my imagination :-)
Intake temp of 84. Never have seen mine that low. Always in the 130’s like TimInNova is showing.
also could swear my temps go up 5-8 degrees when I have the aluminum coolant tank installed. Maybe my imagination :-)
My intake temp of 84 was 10pm last night, outisde air temp probably 80. 70 mph speed/2500 rpm lowers your IAT closer to ambient due to shear volume of airlflow through maf, does not have time to heat up so much.
#117
I removed the thermostat and took the Disco back out onto the highway. Outside temperature was 90 degrees.
At 65 MPH* my OBD2 temp almost hit 189 F, a full 10 degrees less than with the thermostat.
Once off the highway, the temperature eventually went down to 183 and and stayed there.
*The OBD2 speed is actually 6pmh less than actual speed due to my larger than stock tires. So 59 mph is really 65 mph
At 65 MPH* my OBD2 temp almost hit 189 F, a full 10 degrees less than with the thermostat.
Once off the highway, the temperature eventually went down to 183 and and stayed there.
*The OBD2 speed is actually 6pmh less than actual speed due to my larger than stock tires. So 59 mph is really 65 mph
Last edited by TimInNova; 06-21-2021 at 07:52 PM.
#118
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TimInNova (06-22-2021)
#119
Ok Bad thermostat took it out temps let the engine get to 210 (15 minutes or less) dropped like a rock after start, hit 176 at idle after 5 minutes rev'd her up to 2500 and drop to 160ish fast. No rad cap on.
Not a fun fun time. @Extinct what part number do you use for the 180 so I can source a local replacement, it (the old one) does not move in boiling water 86 Degrees here
Not a fun fun time. @Extinct what part number do you use for the 180 so I can source a local replacement, it (the old one) does not move in boiling water 86 Degrees here
Last edited by Richard Gallant; 06-21-2021 at 08:13 PM.
#120
Ok Bad thermostat took it out temps let the engine get to 210 (15 minutes or less) dropped like a rock after start, hit 176 at idle after 5 minutes rev'd her up to 2500 and drop to 160ish fast. No rad cap on.
Not a fun fun time. @Extinct what part number do you use for the 180 so I can source a local replacement, it (the old one) does not move in boiling water 86 Degrees here
Not a fun fun time. @Extinct what part number do you use for the 180 so I can source a local replacement, it (the old one) does not move in boiling water 86 Degrees here
On a related note to the folks on the fence with this mod, both members were able to immediately bring their temps down by removing the thermostat element. Unfortunately bad thermostats happen occasionaly, one of the benefits of this mod is you can just remove the thermostat with minimal coolant loss until you can get another one and keep driving with no temperature risk. That is not possible with the OEM system.