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02-03-2014, 05:52 AM
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#1
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Member
Join Date: Dec 2013
Posts: 37
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Side Radiators vs Rear
Ok, how bad is it NOT to have a side radiator? I mean they do make rear radiators, SO, they must work, right? I believe that side radiators are better, because the breath a little better and perform better, but, we have found a coach that we like most everything about it, but it has a rear radiator (1999 -330 cummins, freight liner chassis) and a rubber roof. We can have a new rubber or Rhino roof put on, but how bad is the radiator situation? Any comments???? Thanks in advance.
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02-03-2014, 06:11 AM
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#2
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Senior Member
Join Date: Apr 2010
Location: SW, Michigan
Posts: 629
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IMO the only advantage to a side radiator is ease of service. Probably close to 75% of the DP MHs have rear mounted radiators and they work fine.
__________________
2010 Allegro RED 36 QSA
GMC Envoy 4x4
SW Michigan to Alaska in 2015
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02-03-2014, 06:22 AM
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#3
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Moderator Emeritus
Country Coach Owners Club Freightliner Owners Club
Join Date: Sep 2004
Location: Glen Allen, VA
Posts: 7,902
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I've had both. Both cool, work as advertised. Rear rad can more easily get dirty from road grime, oil vapors so will generally need periodic cleaning to prevent overheating. Rear rad may use less HP since it does not require a separate hydraulic 'motor' to run the fan, especially if it has a fan clutch.
Side radiators certainly do provide much better/more easy access to much of the engine and key service items. Side radiators are generally seen in more high end rigs.
If I was planning to keep a coach for many years and do my own basic service/maintenance, I would really try to get a side radiator coach.
__________________
2007 Country Coach Allure Siskiyou Summit, sold/traded Nov. 2018.
2019 Grand Designs 384GK-R 5th wheel. Glen Allen, VA
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02-03-2014, 06:32 AM
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#4
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Senior Member
Fleetwood Owners Club
Join Date: Jan 2012
Location: Central, Ohio
Posts: 513
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[QUOTE=Park Ranger;1911345]Ok, how bad is it NOT to have a side radiator? I mean they do make rear radiators, SO, they must work, right? I believe that side radiators are better, because the breath a little better and perform better, but, we have found a coach that we like most everything about it, but it has a rear radiator (1999 -330 cummins, freight liner chassis) and a rubber roof. We can have a new rubber or Rhino roof put on, but how bad is the radiator situation? Any comments???? Thanks in advance. [/QUOTE
Look for the floor plan you like and don't worry about the radiator. There are a lot of rear radiators out there.
__________________
2006 Discovery 39L-2008 Honda CRV
Bud, Sharon, Cody (Grandson) Sophie, Attack Trained Cockapoo
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02-03-2014, 06:49 AM
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#5
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Senior Member
Join Date: Jan 2011
Location: Santa Clarita, CA
Posts: 929
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To me it's all about ease of access for maintenance and repairs. I am way to old to be hanging upside down at the back of my coach trying to replace a belt or alternator. I looked for a used coach that not only had side radiator but also the biggest engine access doors I could get. My last motorhome had a side radiator but a very small access door to the engine. Damn near broke a rib one time trying to reach in to replace my alternator. Good luck on your choice.
Steve
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02-03-2014, 09:14 AM
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#6
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Senior Member
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 3,120
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I do my own maint, side radiator only for me.
__________________
08 Foretravel Nimbus 40 ft tag axle / 1000 watts of solar
2019 Ram 1500 Big Horn Hemi 4x4
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02-03-2014, 09:13 PM
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#7
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Senior Member
Country Coach Owners Club
Join Date: Dec 2010
Posts: 7,803
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I would not let the side vs. rear radiator affect my purchase. I have had both and I consider it a no big deal. If you like the rear radiator coach buy it
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02-03-2014, 10:26 PM
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#8
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Senior Member
Join Date: Sep 2012
Location: MN
Posts: 292
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Is it just me or do higher HP motors have side radiators? Is this because of motor size or just higher end coach?
BTW, ours is side and I do all the maintenance and repairs I can. It would be more difficult with a rear radiator.
__________________
Spinner & Gang
2000 MADP ISC350 2003 Jeep Liberty toad
"Working towards the next vacation!"
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02-03-2014, 10:29 PM
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#9
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Member
Join Date: Jul 2007
Location: CA
Posts: 42
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Park Ranger, you didn't mention length but we found that in our looking at 36-37 foot rigs, every cubic foot of basement storage was important to us especially for longer distant journeys. All things equal, I would have preferred a side radiator, but everything else about our purchase was just what we both wanted.
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Bill, Sandy & our Miniature Poodles Coco and Whiskey 🐩🐩
2018 Roadtrek Adventurous CS XL
2014 Fiat Abarth Toad
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02-03-2014, 10:38 PM
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#10
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Registered User
Damon Owners Club Workhorse Chassis Owner
Join Date: May 2008
Location: N. Palm Springs CA (in winter)
Posts: 2,420
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Side radiators with vents [air scoops] force more air into the engine compartment. But if the back of the motorhome does not have adequate venting, then it is less effective and traps the heat of the engine.
Getting air to the engine and venting out the heat is the objective.
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02-04-2014, 04:33 AM
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#11
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Senior Member
Join Date: Nov 2009
Posts: 2,043
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Originally most all DPs were side radiator. A few years later they moved away from side radiators supposedly for a few different reasons such as supposed overheating problems and damage from road debris since in most cases the radiator was right behind the rear wheels, an increased "cost" for the cooling fan setup, better fuel mileage (of which I never understood), etc etc etc.
Now there is a resurgence of going back to side radiators. Which is better? Unfortunately, the engineers who design these things rarely factor in having to work on them. I guess they assume that there will never ever be a need to access things - their design will never fail.
With all the variables, personal opinions and data, there is one thing that is pretty much guaranteed; At some point in time during the life of your coach you will require some sort of major maintenance that requires getting access to the front or top side of your engine.
You may be fortunate enough to be able to do this work yourself at home however if you're on the road keep this in mind.... Many OTR service shops will refuse to work on rear radiator DPs that require some sort of major service that would require access to the engine itself simply due to the amount of time involved in removing the radiator to access the simplest of things, the technician traffic inside the coach, and complete teardown of the bedroom (or rear bath or walk-in closet) in most cases. A simple water pump replacement, normally a 1 hr job, can quickly turn into a labor nightmare on many rear radiator DPs. Serpentine belt replacement? Idler replacement?
Regardless of what opinions you may see on this thread, simply call around to a few shops who will work on your brand of chassis and ask them the very same question.
__________________
94-Newmar Kountry Star 40-KSDP
Spartan/Cummins 8.3C-300HP/Allison 3060 WTEC-II/25yr RV Tech RVIA Certified/Onan-Cummins Certified
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02-04-2014, 04:56 AM
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#12
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Senior Member
Entegra Owners Club
Join Date: Jul 2012
Location: Ohio
Posts: 447
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Side radiators are a nice option for reasons mentioned above, but rear mount works just fine and actually has a more simple fan drive.
__________________
Neal, Tam, & JR
Elmo & Rosie (Cavaliers) Aggie (White Lab)
2014 Anthem 44DLQ
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02-04-2014, 05:32 AM
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#13
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Senior Member
Join Date: Sep 2012
Location: MN
Posts: 292
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It seems like alternators go multiple times over the life of a coach. Ours is on its 4th in 12 years and 120k miles. The last one we had replaced on a trip. The mechanic said it would have been another $1k and overnight stay if we had a rear radiator. Instead it was $550 and 2 hours and we were back on the road.
__________________
Spinner & Gang
2000 MADP ISC350 2003 Jeep Liberty toad
"Working towards the next vacation!"
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02-05-2014, 09:08 PM
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#14
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Senior Member
Tiffin Owners Club
Join Date: Oct 2005
Location: Full Timing
Posts: 189
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A rear radiator is a deal breaker for me.
ease of service is so much better with a side radiator.
we have been looking at new(er) coaches and have passed on rear radiator coaches.
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