Cooling problems solved???

[aloharovers]

Well I finally got the 31"x19" alum radiator fitted into the Rover.
The truck can now run all but the very steepest of grades with out over heating. I can run from CoSprings to Denver and back with out stopping at all. Used to have to pull over 1-2 times each way to cool down.
I went from CoSprings to Leadville on Friday. Had to pull over once on the climb out of the Springs.

The truck idles much cooler now. I pull over when it hits 220 and it take about 5-10 minutes to drop to 180-185. Now in the same time it will drop down to 165-170.
For flat cruising and down hills I shut down the electric fans and it still drops down to the 165 area.
During some steep offroad climbs it did get close to 220. Climbing up Mt Antero it got pretty hot.
Coming back down the Mountain it drops down to 160. The truck will sit and run at idle at 160.

I have a single 10x20 oil cooler in the truck. The oil is climbing up to 230-240 on the hard stuff and then the water temp follows.
EGTs are only 600-900 depending on the climb.
Other then that oil is running 160-200 depending on grade.

I am going to get an oil thermostat and second cooler. I think the thermo will help to keep the temps up on the easy stuff, and the dual coolers will help with the hard.

It crazy the wide range of temps I am seeing. I am glad that I have just about solved the too hot situation. The cold running sucks for anyone on the trail behind me, putting out a big cloud of white smoke like on start up.

I do have a temp switch tied into the electric fans, and am running a 180* t-stat for the water.
If the extra oil cooler does fix the too hot situation I might try a hotter water t-stat. But the fact that it idles so cold I dont think that will help. If I leave the truck idleing for a long enough time the radiator actually gets cold, so even with the 180* no water is flowing.

Pete

[arveetek]

Originally posted by aloharovers:
The cold running sucks for anyone on the trail behind me, putting out a big cloud of white smoke like on start up.

Pete I know what you mean about the smoking of a cold engine. Last year, my wife and I drove my truck to the top of Pike's Peak. I didn't have any cooling troubles going up, because we inched our way to the top (I'm scared of heights!). It took us two hours to drive the 19 miles.

Anyway, on the way down, my engine was so cold from not working, just holding the truck back, I smoked like a freight train. I pulled over several times to let people pass by.

I don't know if my truck would do that now or not...since the rebuild, I've pretty much eliminated my smoking problem. Even if I start without glow plugs, it doesn't smoke except for a couple of small puffs. It used to envelope the truck in a smoke screen upon startup before the rebuild.

Casey