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Old 03-19-2016, 11:12 PM   #29
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The placement of the radiator has to do with the area needed to cool the engine. All 500hp or larger engines will have a side radiator. Most, but not all 450hp engines will have a side radiator. 400hp models can have either a rear or side radiator. It comes down to area needed to remove the heat from producing power. A rear radiator is limited to the size of the opening at the rear. The side radiator can and usually is larger with sometimes a larger fan. There are other opinions that the side one will bring in cooler and cleaner air, but they can use more hp to turn the fan.
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Old 03-19-2016, 11:20 PM   #30
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Quote:
Originally Posted by BrianGlenn View Post
Can you elaborate on why side rads have more cooling capacity? Larger rads? Larger cooling volumes? Bigger fans? Faster fans? Better control on fan cooling speeds/loads independent of engine speed?

Inquisitive minds want to know.

Brian.

Basic answer is "yes". They also stay cleaner. My 09 Camelot rad, CAC, trans cooler, oil cooler are only a tad dusty. Motor and trans heat are very stable.
Power is used to run the fan when needed, but the power is there for it.


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Old 03-20-2016, 11:50 AM   #31
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Originally Posted by Crasher View Post
The placement of the radiator has to do with the area needed to cool the engine. All 500hp or larger engines will have a side radiator. Most, but not all 450hp engines will have a side radiator. 400hp models can have either a rear or side radiator. It comes down to area needed to remove the heat from producing power. A rear radiator is limited to the size of the opening at the rear. The side radiator can and usually is larger with sometimes a larger fan. There are other opinions that the side one will bring in cooler and cleaner air, but they can use more hp to turn the fan.
maybe true or maybe not. not necessary for the size of the engine. mine is 350hp, there are a lot of 300hp engines on country coaches, and those are all having a side rad. it's more about the preferences by the manufacturers.
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Old 03-20-2016, 01:18 PM   #32
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I added the word TYPICALLY and probably should have also added the word MODERN coaches to my statement. Keep in mind, back in 2000 technology was not where it is today. A 2000 Country Coach was a big heavy coach for the time and the 350 was a big motor for the time. It still needed a lot of cooling. As technology got better, they were able to cool the bigger engines with rear radiators more efficiently, to a point. Things have leveled off in the last few years with the only big changes being DEF.
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Old 03-20-2016, 02:35 PM   #33
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maybe true or maybe not. not necessary for the size of the engine. mine is 350hp, there are a lot of 300hp engines on country coaches, and those are all having a side rad. it's more about the preferences by the manufacturers.
The preference of the manufacturer might have played a roll in the radiator placement of the smaller engines in the past, but show me one 500 hp or larger coach that comes with a rear radiator. Also, I am not aware of any new model DP's with 300 hp that come with a side radiator. Not sure if any 350 hp models have a side one either. I still maintain that the increased need for cooling of the larger engine is the main reason for the larger, higher capacity side radiator.
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Old 03-20-2016, 07:48 PM   #34
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side rad

My 1998 American Eagle 325 HP cummins on a Spartan has a side radiator. As others mentioned easy to change belt, thermostats, hoses.
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Old 03-21-2016, 12:58 PM   #35
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Most of the coaches built on Spartan chassis have side radiators. My coach came with a derated 370 ISL to 350. I've since up rated it to 400hp. My Temps run a consistent 195-200. Trans and engine. My cooling fan average speed is around 35% according to my ScanGauge.
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