2015 No Dual Radiators?

[kthaxton]

On my '15, the intercooler is by itself on the bottom, just like the rendition above (the blue one). Above that starting at the grill, front to back, it goes:
AC condenser
Trans cooler and P/S cooler (same "layer" one is above the other)
Last is the radiator.

Unless I am totally missing something, there is no EGR cooler up front.

 

[kthaxton]

Sheesh, how do you delete a post? I double posted, I guess I'll just edit it to this lame stuff.

 

[NIsaacs]

Do we know for sure if the 13/14 trucks have 2 radiators? Maybe the prototype was never produced? I don't recall any threads about this and I don't know first hand if there are 2. I did a parts search and only find reference to 1 radiator on 13/14 models.

Nick

 

[Hoefler]

My 14 3500 dually has 2 radiators, as pictured above.

 

[Bob4x4]

Nick there are indeed many duel radiator Rams out there.Very easy to spot by the upper radiator hose.

 

[NIsaacs]

Nick there are indeed many duel radiator Rams out there.Very easy to spot by the upper radiator hose.

Thanks, I was beginning to wonder.......It would be interesting to know why it's no longer being used.

Nick

 

[kthaxton]

It would be interesting to know why it's no longer being used.

Nick

Indeed it would.

 

[Bob4x4]

Cost would be my first guess....the leaking upper hoses would be another.

 

[Newsa]

The second radiator is below the primary radiator on my 13. It's not behind.
Maybe they made the '15 radiator bigger?

I have a g56 so no transmission cooler to confuse. And the oil cooler is cooled by the antifreeze/coolant

 

[mpaulson]

Could it be that the 3500's with the Aisin and the higher output and tow ratings are the only ones with the dual rads? Mine has two for sure.

 

[Gonzo 1066]

My 2013 3500 has the twin radiators. The twins are not there for more cooling. The reason is that the engine runs cleaner once it is up to operating temperature. The initial radiator is small, this helps bring the engine up to temp quickly, when the engine temp moves above operating temp the second thermostat opens to allow coolant to go through the large radiator.

 

[kthaxton]

No offense intended, but everything I've read.....and logic confirm that is incorrect. Here is just one example, note it says:

Diesel owners will also benefit from a new cooling system that affords 25 percent more heat-rejection capacity. This is done via a high-efficiency fan, dual radiators, dual transmission coolers and a charge-air cooler, all of which lower operating temperatures and deliver improved performance.

http://cumminsengines.com/cummins-turbo-diesel-2013#overview

Other articles I've read state that they act as one large radiator and I have yet to see any mention of dual thermostats.

Further, the logic part.....the thermostat controls the temperature as it warms up. If it is closed as the temperature comes up, it doesn't matter what size or efficiency the radiator is because it is not sending coolant through it.

 

[kthaxton]

Also, you can see in this picture that the "Y" split in the upper hose comes after the t-stat.

 

[AH64ID]

My 2013 3500 has the twin radiators. The twins are not there for more cooling. The reason is that the engine runs cleaner once it is up to operating temperature. The initial radiator is small, this helps bring the engine up to temp quickly, when the engine temp moves above operating temp the second thermostat opens to allow coolant to go through the large radiator.

Radiators do not have an effect on how fast a motor warms up, that's what the thermostat is for.

As kthaxton pointed out, they use the same thermostat.

 

[SnoKing]

The aluminum 5.3 V8 in our Buick Rainier is the fastest warming up engine I have ever owned. SNOKING

 

[kthaxton]

Electric fans?
Our Subaru warms up really fast too, I've always figured it's because of the electric fans that will be off until a certain temp.....therefore not blowing cool air through the engine compartment as it warms up. I 'spose an Aluminum block could contribute to that as well.

 

[AH64ID]

My DD is a 02 Jetta with a 2.0 that warms up very quick, as does the wifes 4Runner with an aluminum 4.0 V6. The jetta has elec fans, but the Runner does not.

Now my 05, that's the slowest vehicle I have ever seen to warm up. It's much worse than stock, but that's due to the cam/turbo/ coolant filter and tuning. A winter front helps, but on a 20° day it can still take up to 12 miles for the thermostat to open. Heater stays on low fan until it's at least 140° too.

 

[CToney]

My DD is a 02 Jetta with a 2.0 that warms up very quick, as does the wifes 4Runner with an aluminum 4.0 V6. The jetta has elec fans, but the Runner does not.

Now my 05, that's the slowest vehicle I have ever seen to warm up. It's much worse than stock, but that's due to the cam/turbo/ coolant filter and tuning. A winter front helps, but on a 20° day it can still take up to 12 miles for the thermostat to open. Heater stays on low fan until it's at least 140° too.

Do you engage your exhaust brake for a couple minutes to help speed warmup? My 05 warms up way faster than my 03. Training wheels, 2000lb bale deck and less efficient engine help. I use oil pan heaters to help speed warmup too.

 

[AH64ID]

Do you engage your exhaust brake for a couple minutes to help speed warmup? My 05 warms up way faster than my 03. Training wheels, 2000lb bale deck and less efficient engine help. I use oil pan heaters to help speed warmup too.

I don't with a cold engine, mainly because when I would do that the bac-kpressure would send my soot thru the roof on my UOA.

 

[Joseph Donnelly]

I recently got feedback that the 2015 radiator is the same part number as the primary radiator in 2013. So, if one is now enough, why did Ram go to all that expense in 2013 with a second radiator?