Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

2014 liquid cooled question

Thread Tools
 
Search this Thread
 
Old Oct 8, 2013 | 09:20 PM
  #1  
harris48cars's Avatar
harris48cars
Thread Starter
|
Road Master
Joined: Jul 2005
Posts: 1,018
Likes: 0
From: Front Royal, Virginia
Default 2014 liquid cooled question

Suppose your coolant runs out or there is some other problem with the coolant. Cant you continue to operate the bike? Isn't it still an air cooled engine at that point. Just curious.
Gary
 
Reply
Old Oct 8, 2013 | 10:31 PM
  #2  
SafetyMan's Avatar
SafetyMan
Ultimate HDF Member
Joined: Jun 2007
Posts: 7,970
Likes: 85
From: San Antone
Default

Yes.

A good friend of mine rode the skills competition in Milwaukee last month. The engineers that designed the system were the judges, he asked them this very question.

Their answer was yes, it is the same engine, with cooling ports, and can be ridden as an air cooled engine. The cooled heads were designed for rider comfort.
 
Reply
Old Oct 9, 2013 | 05:54 AM
  #3  
Gunnysgt's Avatar
Gunnysgt
Grand HDF Member
Joined: Oct 2009
Posts: 3,824
Likes: 603
From: Myrtle Beach SC
Default

The owners manual for the 2014 Limiteds sez NO, don't do it. I am curious though how the liquid could just "run out". Seems to me one would notice that happening.
 
Reply
Old Oct 9, 2013 | 07:56 AM
  #4  
Boltsfaninmo's Avatar
Boltsfaninmo
Road Captain
Joined: Jul 2009
Posts: 590
Likes: 1
From: O'Fallon, MO
Default

Very interested in what is the truth here.
 
Reply
Old Oct 9, 2013 | 08:03 AM
  #5  
SAFTFIRST's Avatar
SAFTFIRST
Cruiser
Joined: Sep 2013
Posts: 111
Likes: 0
From: Dulles,Virginia
Default

I own a 14 LTD - it "seems" to be leak free now. But, if it leaks again. I will not ride it and will have the dealer come retrieve it. Eventually, we will have data to support one way or the other regarding how long or if its ok to ride with coolant gone. Time will tell.
 
Reply
Old Oct 9, 2013 | 08:27 AM
  #6  
beary's Avatar
beary
Grand HDF Member
Joined: Mar 2007
Posts: 4,928
Likes: 285
From: Edmond Oklahoma
Default

Of course the manual says not to ride it, whatever caused the problem in the "cooling system" could be further damaged by continually running the engine. But that doesn't mean the engine can't run safely without coolent. I can't remember where I read it, but the article was a MOCO representative explainng that the liquid cooled heads are only for rider comfort and the engine would run fine without coolent if the situation required it.

Beary
 
Reply
Old Oct 9, 2013 | 08:37 AM
  #7  
Weavr99FLHT's Avatar
Weavr99FLHT
Outstanding HDF Member
Joined: Mar 2008
Posts: 2,306
Likes: 39
From: Everywhere
Default

Rider magazine says that the moco reps say they can be ridden without coolant until able to be serviced.
 
Reply
Old Oct 9, 2013 | 09:09 AM
  #8  
iwillfixthem4u's Avatar
iwillfixthem4u
Road Captain
Joined: Jan 2010
Posts: 709
Likes: 2
From: SO Cal
Default

Originally Posted by SafetyMan
Yes.

A good friend of mine rode the skills competition in Milwaukee last month. The engineers that designed the system were the judges, he asked them this very question.

Their answer was yes, it is the same engine, with cooling ports, and can be ridden as an air cooled engine. The cooled heads were designed for rider comfort.
food for thought: the coolant caries the heat away, and the heads with out the coolant passage dissipate the heat through the solid aluminum. I believe that an empty head will not do the same because of the the air gap caused by the area being empty. I also believe that the wet heads being thinner may be susceptible to cracking. IMO
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Oct 9, 2013 | 09:32 AM
  #9  
Kugie's HOG's Avatar
Kugie's HOG
Road Master
Joined: Jan 2009
Posts: 773
Likes: 11
From: Roanoke, VA
Default

Originally Posted by SafetyMan
Yes.

A good friend of mine rode the skills competition in Milwaukee last month. The engineers that designed the system were the judges, he asked them this very question.

Their answer was yes, it is the same engine, with cooling ports, and can be ridden as an air cooled engine. The cooled heads were designed for rider comfort.

Dealers have received a Tech Tip from Harley that says do not continue to operate bike if coolant runs out or if coolant temperature light will not go off.
 
Reply
Old Oct 9, 2013 | 09:52 AM
  #10  
beary's Avatar
beary
Grand HDF Member
Joined: Mar 2007
Posts: 4,928
Likes: 285
From: Edmond Oklahoma
Default

Originally Posted by iwillfixthem4u
food for thought: the coolant caries the heat away, and the heads with out the coolant passage dissipate the heat through the solid aluminum. I believe that an empty head will not do the same because of the the air gap caused by the area being empty. I also believe that the wet heads being thinner may be susceptible to cracking. IMO
Very difficult to quantify because the cooling system attachements to the heads may themselves dissipate enough heat to keep the head metal materials stable. I can't imagine Harley hasn't tested this senario. In fact since they have said it doesn't hurt the engine, we should assume (I know) they have tested the engine without coolent.

Beary
 
Reply



All times are GMT -5. The time now is 02:58 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE