Water jets for radiator / oil / trans coolers
I just found another interesting upgrade/change on my "new to me" 1997 MH. I found 4 jets that point at the radiator and the engine oil and trans coolers. It looked like a water line was run to a co...
Forum Discussion
Thor,
Well Sir, our first motor home was a class C Dodge with the 440-1 in it and, during the summer runs from the San Diego area to the Colorado river, towing a boat, that darn 440 would always climb in temps. Of course, it didn't help that I was driving in 105 degree heat about 95% of the time. That's the reason we went to the river right?
Anyway, I got tired of it getting hot and worrying so, I built that system you're talking about. I used a steel brake line, about 3/16" in diameter and drilled about 20, 1/16" holes in it for full length, across the top of the radiator. I mounted that tube, about an inch away from the top tank of the radiator. I sealed the end with brazing.
Then, I plumbed it into another 12V RV water pump and tee-d off of the water supply from the main water tank. Now, when that temp would start climbing on that temp gauge, to say, around 220, I'd simply push a momentary button on the dash, and spray the top tank. I'd do this for a count of about 5-8 seconds. Then, I'd let it run for about 10 seconds and do it again. You should have seen that temp gauge drop down to 180. It would then take around 5 or 6 miles to climb back up to 220 again. Then, I'd start the process all over again.
And yes, I did everything possible to cool that engine. I did thermostat work, converted from a two row to a four row radiator, larger clutch fan, moved the trans cooling completely away from the radiator to it's own cooling system, built an oil cooling system for it, and, yet it still climbed in temp. The water spaying system was the only GARANTEED system for keeping that engine cool, in that kind of driving conditions.
Now, in a 4 hour drive, I'd end up using almost 2/3 of my water supply, which was about a 45 gallon tank.
That didn't matter 'cause where we'd camp, we had full hookups anyway. Now, as far as rust, NONE! Build up of any type, NONE! I tell you one thing that did happen, besides my manual cooling of that darn 440, the entire front end of that engine was always sparkling clean. It was being steam cleaned a lot!!
Scott
Well Sir, our first motor home was a class C Dodge with the 440-1 in it and, during the summer runs from the San Diego area to the Colorado river, towing a boat, that darn 440 would always climb in temps. Of course, it didn't help that I was driving in 105 degree heat about 95% of the time. That's the reason we went to the river right?
Anyway, I got tired of it getting hot and worrying so, I built that system you're talking about. I used a steel brake line, about 3/16" in diameter and drilled about 20, 1/16" holes in it for full length, across the top of the radiator. I mounted that tube, about an inch away from the top tank of the radiator. I sealed the end with brazing.
Then, I plumbed it into another 12V RV water pump and tee-d off of the water supply from the main water tank. Now, when that temp would start climbing on that temp gauge, to say, around 220, I'd simply push a momentary button on the dash, and spray the top tank. I'd do this for a count of about 5-8 seconds. Then, I'd let it run for about 10 seconds and do it again. You should have seen that temp gauge drop down to 180. It would then take around 5 or 6 miles to climb back up to 220 again. Then, I'd start the process all over again.
And yes, I did everything possible to cool that engine. I did thermostat work, converted from a two row to a four row radiator, larger clutch fan, moved the trans cooling completely away from the radiator to it's own cooling system, built an oil cooling system for it, and, yet it still climbed in temp. The water spaying system was the only GARANTEED system for keeping that engine cool, in that kind of driving conditions.
Now, in a 4 hour drive, I'd end up using almost 2/3 of my water supply, which was about a 45 gallon tank.
That didn't matter 'cause where we'd camp, we had full hookups anyway. Now, as far as rust, NONE! Build up of any type, NONE! I tell you one thing that did happen, besides my manual cooling of that darn 440, the entire front end of that engine was always sparkling clean. It was being steam cleaned a lot!!
Scott
