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Discussion Starter #1
My 2015 Road King is scheduled to be delivered to me on Friday this week. This will be my first Harley and my first motorcycle after having a break of 23 years. I am sure you can imagine my excitement.

On the other hand, I wonder if anybody who has not recently been in Istanbul can imagine the traffic congestion that the bike will have to endure. Average traffic flow speeds of 3 MPH and slower are common in rush hours. Spending HOURS in this kind of traffic is not what a big air-cooled V twin looks forward to, especially in summer. IMHO, the King would highly benefit from fan assisted oil coolers under these conditions. I am considering replacing the stock oil cooler with this one and I would greatly appreciate your comments and/or suggestions:

UltraCool Chrome Oil Cooler System | 178-523 | J&P Cycles
 

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If you are truly having to expose your beautiful new RK to extended idling and sitting in traffic I would consider more than just a fan assisted oil cooler.

There are a few actual cooling fans on the market that have a proven track record of reducing engine temps while sitting. Love jugs is one and Wards cooling fans is another. The love jugs is a true parade fan. Google them. Good luck.


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I would first see if the factory cooler can handle it, if not then I would see if there is any way the fan cooler could be mounted along with the factory cooler.
 

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Discussion Starter #4
If you are truly having to expose your beautiful new RK to extended idling and sitting in traffic I would consider more than just a fan assisted oil cooler.

There are a few actual cooling fans on the market that have a proven track record of reducing engine temps while sitting. Love jugs is one and Wards cooling fans is another. The love jugs is a true parade fan. Google them. Good luck.


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Thank you so much. I was not aware of the existence of these fans. The Wards seems to be more attractive to me. I think the combination of Ultra Cooler oil radiator and the Wards fans is the best I can do.

I no longer live in Istanbul so I will not have to expose the King to such catastrophic congestion daily. However, even occasional exposure is unbearable. Besides, I suppose the King will appreciate additional cooling, anyway.

I would first see if the factory cooler can handle it, if not then I would see if there is any way the fan cooler could be mounted along with the factory cooler.
Thanks fatcat. As far as I know, the factory cooler does not have fans so its effect would be negligible when the King is stationary or moving very slowly.
 

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I use a Jagg Fan assisted oil cooler setup, and it does help, my bike doesn't go into "parade mode" anymore, since the install. If even more was needed, the head cooling fans would be next.
 

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Thank you so much. I was not aware of the existence of these fans. The Wards seems to be more attractive to me. I think the combination of Ultra Cooler oil radiator and the Wards fans is the best I can do.

I no longer live in Istanbul so I will not have to expose the King to such catastrophic congestion daily. However, even occasional exposure is unbearable. Besides, I suppose the King will appreciate additional cooling, anyway.



Thanks fatcat. As far as I know, the factory cooler does not have fans so its effect would be negligible when the King is stationary or moving very slowly.
I have the Wards cooling fans on my 2012 RK, been on there for 2 years now working flawlessly. Yes I prefer the looks of the Wards over the Love Jugs. But I have read the Love Jugs move a higher volume of air.
I did actually watch my Wards fans bring down the head temps while connected to my laptop through my Tmax tuner. We have intense heat here in the summer like 80° at 6:00 AM so the fans get a work out.
As hot as these motors run I think anything that can drop temps some is good. Just my opinion though.
 

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Discussion Starter #7
... If even more was needed, the head cooling fans would be next.
I totally agree on the hierarchy of additional coolers: fan assisted oil cooler first, and then; fan assisted head fin cooler if need be. "Need" is a delicate word, though. A big air/oil cooled V twin is inherently hard to cool but the MoCo is not inexperienced when it comes to the "needs" of a big V twin. :)

Excessive cooling can also be harmful but I believe this is rather unlikely, at least in most cases in Summer. Nevertheless, I am willing to pay the premium for the thermostatic control that both units offer. After all, the King will rumble in cold weather as well.

I have the Wards cooling fans on my 2012 RK, been on there for 2 years now working flawlessly. Yes I prefer the looks of the Wards over the Love Jugs. But I have read the Love Jugs move a higher volume of air.
I am so happy to hear that they work flawlessly. They may move a bit less air but looks does matter when it comes to a Harley. Besides, I am considering using them on top of forced oil cooling so I reckon they will do a decent job, altogether.
 

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Discussion Starter #9
Thank you ematicic. I checked it and J&P Cycles website read: “does not fit your 2015 Harley Davidson Touring Road King FLHR”. On the other hand, I already got an impressively fast reply from Jason; the Wards guy. He seems to know what he is doing and also, how to do so.

It is so nice to be at these forums. Yesterday, I was unaware of fin cooling fans. Today, I am choosing between them. This is like a dream. I will try to contribute as much as I can, on my part.

I will start with the pics I had promised on my introduction post. I loaded the batteries to my camera. The van with which I will collect the King is scheduled for tomorrow morning. The insurance is arranged. The barbecue party with piston headed friends is scheduled for Saturday evening, in a garage. This is my last night w/o motorcycle after 2+ decades. Thank you all, once again, for your contributions and Long Live the King!
 

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JIMS Harley-Davidson Engine Cooling Fans | J&P Cycles

I think I found it cheaper on amazon but I have been using the JIMS fan for about a year and have had huge improvements cooling my 110. The other products are grat too, just providing another option.
Thanks ematicic, I thought I was leaving couple of manufacturers out. There is Jim ' s and also Lenale as well. Thanks for adding that to the mix and giving the op lots of options.
 

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That Ultra Cool sure looks nice.
I have a 14 RK and I am hoping some day, someone, simply makes a plug in play cooling fan for our oil coolers OR a simple, plug and play oil cooler fan unit.

It seems like a simple concept and cost effective to be able to mount a fan on the oil cooler, one power lead and maybe a thermostat.
Maybe it exists, if it does, I am hoping someone posts it here.
I know there are products out there, but all seem more then I want or an adaption that is meant for a whole different range of bike makers.

I am assuming, someone out there makes a simple, bolt on fan unit to fit late model Road Kings.
 

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The Ultra Cool Oil Cooler is great, I bought mine through Catalyst Cycles for $323. Does a great job on my 06 ultra. Good luck and good riding. :biking:
 

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Discussion Starter #13
I researched oil coolers and parade fans for Harleys as thoroughly as I can. I stand corrected regarding the hierarchy of their importance in stop and go traffic. I now understand that in stop and go traffic; force cooling the cylinder heads is more critical than force cooling the oil radiator.

I still couldn't give up the idea of replacing the OEM oil cooler, due to the fans and the size of the Reefer. A Wards FCS system and an Ultra-Cool Reefer are actually on their way towards me. Once I receive them, I will post installation pics and share my opinions about them.
 

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I researched oil coolers and parade fans for Harleys as thoroughly as I can. I stand corrected regarding the hierarchy of their importance in stop and go traffic. I now understand that in stop and go traffic; force cooling the cylinder heads is more critical than force cooling the oil radiator.

I still couldn't give up the idea of replacing the OEM oil cooler, due to the fans and the size of the Reefer. A Wards FCS system and an Ultra-Cool Reefer are actually on their way towards me. Once I receive them, I will post installation pics and share my opinions about them.
Looks like you have it covered . :thumb
 

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Oil coolers and cylinder head fans are not the only two ways to cool down a Harley. The use of synthetic oil will help lower the temp. Also the factory fuel settings on a Harley are lean causing them to run hot. Installing a tuner will give you both a cooler and better running bike.
 

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Discussion Starter #16 (Edited)
Looks like you have it covered . :thumb
I guess so, indeed. Thanks webco2.

Oil coolers and cylinder head fans are not the only two ways to cool down a Harley. The use of synthetic oil will help lower the temp. Also the factory fuel settings on a Harley are lean causing them to run hot. Installing a tuner will give you both a cooler and better running bike.
I am using SYN3 Harley oil already. I wonder if it lowers the temp due to less friction but it will withstand to higher temps than fossil based oil for sure.

Anyway, since I cannot improve anything that I cannot measure, I will also install a temp gauge to monitor head temp. However, I do hope that the legendary V Twin does not call for further extra cooling when a total of 4 fans blow the heat away.
 

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Discussion Starter #17
Today, sunshine and 14˚C (57˚F) ambient temp provoked me for a Sunday ride of about 130 km (80 miles). IMO, this big V Twin badly needs a fan assisted oil cooler.

The last few miles of the first leg of my round trip were in stop and go traffic but not severe and not for long. This was four traffic lights; idling a few minutes at each, and slow moving between them. When I finally parked after an otherwise decidedly pacific ride of 65 km (40 miles), my digital oil dipstick read 115˚C (239˚F) a few seconds after turning the ignition OFF. My return trip did not include stop and go traffic and the digital dipstick read 105˚C (221˚F), again as soon as the ignition was OFF. The ambient temp was about the same, both ways.

If the dipstick is accurate enough, these oil temps are OK, for sure, but higher than what I would expect after solo riding with no load, at such a calm pace and at such a cool ambient temp. Especially the difference the moderate stop and go traffic seemed to cause is alarming for me. I will enjoy my Harley mostly in summer, during which ambient temp would normally fluctuate between 25 and 35˚C (77 and 95˚F), occasionally higher. Much severe stop and go traffic would not be easy to avoid and I would not necessarily ride solo all the time. It seems the summer would cause oil temps that could easily press in upon the limits of the full synthetic SYN3 oil, if they do not exceed its limits from time to time.

I am very happy that I did order an Ultra-Cooler and a set of Wards fans. I am thankful to hondo2doc for letting me know about the latter and to all those who have commented about both. They are at the customs now, as well as a digital gauge for monitoring head temps. I hope to receive them all next week. I will let you all know about my installations, with pics, and about my subsequent temp readings.

I do not promise comparative readings with and without forced cooling though. I will not experiment with my beloved King, just for the sake of knowing how hot she would get if the fans were not blowing. On the other hand, I feel secure about the opposite end of the temp spectrum. Since both units are thermostatically controlled, they will not blow when the King is cool enough. However, I got the impression that in summer, once the engine gets to temp, the King will seldom be cool enough, if ever, so that the fans do not blow. I will see and let you know.
 

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My 2015 Road King is scheduled to be delivered to me on Friday this week. This will be my first Harley and my first motorcycle after having a break of 23 years. I am sure you can imagine my excitement.



On the other hand, I wonder if anybody who has not recently been in Istanbul can imagine the traffic congestion that the bike will have to endure. Average traffic flow speeds of 3 MPH and slower are common in rush hours. Spending HOURS in this kind of traffic is not what a big air-cooled V twin looks forward to, especially in summer. IMHO, the King would highly benefit from fan assisted oil coolers under these conditions. I am considering replacing the stock oil cooler with this one and I would greatly appreciate your comments and/or suggestions:



UltraCool Chrome Oil Cooler System | 178-523 | J&P Cycles

Having similar concerns i installed a high capacity oil pan, which holds 6.5 quarts of oil instead of 5...more oil cooler bike.

Its made by harley davidson screamin eagle check it out...on average my bike runs 7-8 degrees cooler than my buddies
 

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Discussion Starter #20
You may try this to change your lean factory fuel mixture to a slightly richer ratio. They are pretty much plug and play. Lowered my oil temp by 20 F. Better throttle response in city traffic.

Welcome to Nightrider.com Performance Products - Modern Engineering - Old School Service

The web site has all information you need to explain how they work.
Thank you SoftailBilly. You have been very informative for me. Besides, not producing as much heat in the first place makes more sense than dissipating the excess afterwards. I have to see what the dealer will say about the warranty, though.

Having similar concerns i installed a high capacity oil pan, which holds 6.5 quarts of oil instead of 5...more oil cooler bike.

Its made by harley davidson screamin eagle check it out...on average my bike runs 7-8 degrees cooler than my buddies
Thank you SoldierX. I am aware of the high capacity oil pan but it is expensive. IMHO, the oil in it would eventually reach as high temps but this would only take longer. Therefore, I believe forced cooling is not only more cost effective but also, thermodynamically more effective.
 
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