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Water Temps info

DesertRox

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I received this from Roxor technical support. I was curious as to what temps the light comes on and what is considered hot and what is normal operating temps. I'm using an Autometer Dashlink 2.0 to monitor things and I'm seeing temps run from 184 degrees to 204 degrees in southern Arizona in 95-105 degree ambient temps.

"HIGH COOLANT TEMPERATURE

High coolant temperature lamp in the instrument cluster will turn ON when high coolant temperature is detected

a. Lamp blinks at a coolant temperature of 110oC or 230oF

b. Lamp turn ON continuously at a coolant temperature of 120oC or 240oF

c. Lamp stops blinking and turns OFF at a coolant temperature of 105oC or 225oF

Input for this lamp is provided by the EMS ECU through CAN"

Roxor Tech Support.
 

Roxasuras

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Great info, I always monitor that especially as a muscle car guy (always have had problems with over heating) good research DesertRox.
 

txroadkill

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Highest I’ve seen on the scan gauge has been about 198 if I remember correctly and that was briefly at a stop sign after cruising 65 plus in 90 plus heat. shortly after Taking off it dropped back down to the 188 it normally cruises at. This is With stage 1 and no fan shroud. I bet the shroud would hold the temps in check with less fluctuations
 

Roxasuras

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I don't have a surround either and the past week in Moab it got to a whopping 109 Roxor temp never got over 190 and that's riding trails all day.
 

DesertRox

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It seems my highest temps come when driving at high speed, that is when I see 200 degrees. I have an electric fan installed so when I slow down or stop at a light then it drops around 190. On the trail it seems to stay around 190 unless I'm doing a slow climb up a good grade but the fan controls things well. Also this is at the engine block not at the thermostat.
 

mickeybobs

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Anyone know the water thermostat temp when it opens ? I want locate the electric fan switch on the thermostat housing where the plug is,(the bolt with the copper washer) . The stat has to open BEFORE the fan switch kicks on . ie.. water therm. @ 170f fan switch @185f .Just hate to cut the upper radiator hose up to put the bung in ......................... ps... the thread of that bolt is 12m x1.5
 

DesertRox

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It is posted on here somewhere but I thought it was 185 for the T-Stat and my electric fan is on at 195 and off at 170 I believe.
 

DesertRox

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Roxor takes it's water temp measurement at the middle of the block on the passenger side I believe and most guys installing temp sensors at the thermostat housing so we are talking two different readings.
 

Wm435

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Highest I’ve seen on the scan gauge has been about 198 if I remember correctly and that was briefly at a stop sign after cruising 65 plus in 90 plus heat. shortly after Taking off it dropped back down to the 188 it normally cruises at. This is With stage 1 and no fan shroud. I bet the shroud would hold the temps in check with less fluctuations
With all the added additions I'm able to with great ease and comfort drive 70 mph, and my coolant runs 220F at the highest. Is that okay for the motor if I hit 220F with my coolant?
 

Roxasuras

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I ran mine all day in Moab with air temp around mid 90s, and by all day I literally mean from about 830- 9 am to about 6pm, I didn't even shut it for fuel, and it never got over 193. Not really sure what the warning range starts at. Did your temp light come on?
 

Wm435

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I ran mine all day in Moab with air temp around mid 90s, and by all day I literally mean from about 830- 9 am to about 6pm, I didn't even shut it for fuel, and it never got over 193. Not really sure what the warning range starts at. Did your temp light come on?
No it did not, I just wanted to see if I'm potentially shaving off the longevity side of the motor
 

1BB

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No it did not, I just wanted to see if I'm potentially shaving off the longevity side of the motor

At 220 you're okay and can run that all day long. When you start getting up towards 250 and above, then what happens is, the heat starts to break down your engine oil, and that's why you get early wear and tear.

The engine itself doesn't care if it's 190 or 250, but the fluids in it do care and care a lot when it gets too hot. This is why diesels generally have larger oil pans and hold more oil, because they want that oil to be able to remain hot but not too hot over long periods of operation which diesels are made for like over the road trucking where an engine will need to pull a heavy load up and over mountains, and through the heat of deserts.

The hotter the engine gets, the more heat the oil naturally absorbs too, and while oil has to run hot and above 212 so it can burn off any moisture or fuel or any contaminates in it, there is a limit, but I seriously doubt any Roxor has ever been pushed to that limit to where they've heated up the engine oil THAT much to where it's breaking down and causing premature engine wear. I don't care if your engine did hit 250 or 260 even, it would have to do that for a LONG period of time, before the oil reached those same temps that your coolant is at.

What will happen WAAAAY before the oil gets over heated, is the coolant will boil over and into the overflow tank and you will stop the engine in your all-out panic attack you'll be having. The radiator cap has a rating which is probably 15 pounds. For every pound of pressure your cap is rated for, it RAISES the boiling point of your coolant 3 degrees. So, a 15 pound cap adds 45 degrees to the boiling point of 212 for a new boiling point of 257 degrees, which is around the temp that your oil will start to break down which is 260 and higher, to as much as 275 in some high-performance engine oils.

This is why you NEVER remove a radiator cap from a hot engine. When you do, you instantly lower the boiling point back down to 212 and it WILL come screaming out. If you're higher up in the mountains, your boiling point is even lower to due having less air pressure.

If your oil runs too cold, that's just as bad since now that moisture stays in the oil, and just because your coolant reads that your engine is warm, your oil takes much longer to warm up, and short trips in the winter means your oil never gets to operating temp and then stays there for a while in order to burn off any moisture or whatever is in it.

Short trips will build up condensation inside the engine crankcase and it does this every time you run the engine.

What happens is, the air in the crankcase EXPANDS when hot and if you don't run the engine long enough for the oil to burn off the moisture in it, and you shut the engine down, the air in the crankcase starts to cool and CONTRACT in the crankcase and will pull in new air and NEW MOISTURE inside it and with every cycle of doing this, more and more moisture just keeps building up in your oil over and over with every short trip....there's no magic here.

You hear people say all the time short trips are bad for an engine, but don't know why it's bad.

This is why short trips are not good for an engine, and how they can cause more damage than being hot, and in the winter, you should take the vehicle out and run it at highway speeds for an hour or so once a week, if you're doing a lot of short trips in the winter, and even the summer to some degree. This is also good for the vehicles battery, and warms it up as well, so it can take a full charge now.
 
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