190 when you are getting on it in 100+ ambient sounds outstanding. You are ready for Death Valley.

You must be a hardy soul going for a spin in your soft top 90 when its 103 out.

 

You must be a hardy soul going for a spin in your soft top 90 when its 103 out.

Thanks for the sanity check, I would hate to over temp my new motor. Spending most of my life out here 103 doesn't bother me as much as sub freezing temps.

So what would the upper temp limit be? I can't find it anywhere with a google search.

 

That's what I figured. Its been several decades since taking thermodynamics class and even longer since helping a buddy get thru navy nuke school.
I just found this:
15 psi boiling temperature of a 50/50 coolant blend is 265 degrees. That is hot for coolant.

 

220 is when all hell broke loose on my 300Tdi adventure to Alaska, and it's my personal red line.

During that ordeal, it went up to 250 on more than one occasion, and the majority of the engine was OK.

 

If you are concerned about your coolant temperature it might be worth considering something like the Australian Engine Watchdog or the South African Madman gauges with inbuilt audible alarms. Alarm temperature can be preset to your own temperature limit.

Also consider a coolant level alarm. The standard LR temperature gauge is about as much use as a chocolate fire guard.

An audible alarm is worth having as you do not always keep an eye on a visual gauge.


Brendan

 

The standard LR temperature gauge is about as much use as a chocolate fire guard.

He has a VDO gauge.

Personally, what I did was use a VDO sender (323-026) that has a high temperature switch as well. The switch is wired to a buzzer and light. It goes off at 208 F.

 

Those are good numbers. I have an electric fan for the AC which has a temp controlled switch in the rad as well. This way if the AC is off but the rad temps climb it comes on. Really nice for slow climbs. It has an adjustable switch and I keep it at 200. I still have the viscous unit as well.