2018 Liquid Cooled Bikes, The Few That Are Left
Seasoned HDF Member
Joined: Sep 2009
Posts: 17,143
Likes: 6,165
From: SE Michigan
The 2018 Touring lineup aren't water cooled, only the Ultras and CVOs are water cooled (well, "Twin Cooled").
My understanding (and could be wrong) is that the Ultras are liquid cooled because there's so much fairing everywhere that it would interfere with air cooling.
My understanding (and could be wrong) is that the Ultras are liquid cooled because there's so much fairing everywhere that it would interfere with air cooling.
Yes they run at the same temperature, but the liquid cooled bikes run at higher compression, which yields more power, and also produces more heat, so the liquid cooled design is needed to keep the temps down.
So it really has nothing to do with the fairings interfering with air cooling.
Last edited by Keithhu; Jan 5, 2018 at 07:22 PM.
Stellar HDF Member
Joined: Aug 2008
Posts: 2,107
Likes: 283
From: California, Md now Savannah, Ga
The 2018 Touring lineup aren't water cooled, only the Ultras and CVOs are water cooled (well, "Twin Cooled").
My understanding (and could be wrong) is that the Ultras are liquid cooled because there's so much fairing everywhere that it would interfere with air cooling.
My understanding (and could be wrong) is that the Ultras are liquid cooled because there's so much fairing everywhere that it would interfere with air cooling.
The CVO RG has no lowers so it is air cool
The CVO SG has lower but oddly this year it is air cooled
The CVO LIMITED has lowers and is Twin Cooled
I believe since 2014 any CVO SG that had lowers was Twin Cooled
Cruiser
Joined: Jun 2006
Posts: 183
Likes: 21
From: Arthur, IL
Let's make it more confusing-
Electra Glide Ultra Classic has lowers, but is oil cooled.
Ultra Limited has lowers and is twin cooled.
Road Glide Ultra has lowers and is twin cooled.
Harley lists the compression at 10.0 to 1 for both oil and twin cooled, but the torque for oil cooled at 111 and twin cooled at 114.
Electra Glide Ultra Classic has lowers, but is oil cooled.
Ultra Limited has lowers and is twin cooled.
Road Glide Ultra has lowers and is twin cooled.
Harley lists the compression at 10.0 to 1 for both oil and twin cooled, but the torque for oil cooled at 111 and twin cooled at 114.
Seasoned HDF Member
Joined: Sep 2009
Posts: 17,143
Likes: 6,165
From: SE Michigan
Let's make it more confusing-
Electra Glide Ultra Classic has lowers, but is oil cooled.
Ultra Limited has lowers and is twin cooled.
Road Glide Ultra has lowers and is twin cooled.
Harley lists the compression at 10.0 to 1 for both oil and twin cooled, but the torque for oil cooled at 111 and twin cooled at 114.
Electra Glide Ultra Classic has lowers, but is oil cooled.
Ultra Limited has lowers and is twin cooled.
Road Glide Ultra has lowers and is twin cooled.
Harley lists the compression at 10.0 to 1 for both oil and twin cooled, but the torque for oil cooled at 111 and twin cooled at 114.
Road Captain
Joined: Sep 2012
Posts: 609
Likes: 159
From: Allover
You can drop the old twin cooled nomeclature.
M8s are all twin cooled either air and oil or air and water.Just call it what it is Oil or Water cooled.
Antifreeze and water drop the temperature of anything faster than oil.Ask a blacksmith!
Those 111 and 114 figures you are quoting are not Torque numbers of any M 8,so could be you picked up fake news,of which there is an oversupply on these forums
M8s are all twin cooled either air and oil or air and water.Just call it what it is Oil or Water cooled.
Antifreeze and water drop the temperature of anything faster than oil.Ask a blacksmith!
Those 111 and 114 figures you are quoting are not Torque numbers of any M 8,so could be you picked up fake news,of which there is an oversupply on these forums
Last edited by Peter Quinn; Jan 6, 2018 at 02:45 AM. Reason: Omission
Seasoned HDF Member
Joined: Sep 2009
Posts: 17,143
Likes: 6,165
From: SE Michigan
You can drop the old twin cooled nomeclature.
M8s are all twin cooled either air and oil or air and water.Just call it what it is Oil or Water cooled.
Antifreeze and water drop the temperature of anything faster than oil.Ask a blacksmith!
Those 111 and 114 figures you are quoting are not Torque numbers of any M 8,so could be you picked up fake news,of which there is an oversupply on these forums
M8s are all twin cooled either air and oil or air and water.Just call it what it is Oil or Water cooled.
Antifreeze and water drop the temperature of anything faster than oil.Ask a blacksmith!
Those 111 and 114 figures you are quoting are not Torque numbers of any M 8,so could be you picked up fake news,of which there is an oversupply on these forums
They are *engine* torque numbers, not at the rear wheel.
Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 267
From: People's Republic of Boulder Colorado
If ya want the true facts, a H-D salesman is the absolute LAST person to ask! Sad, but true.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,467
Likes: 2,996
From: Charleston, SC
There is a ton of fake news lately, but mostly its from the people who are calling out "that's Fake news!".
Wait, did I just... Well Dammit.
Wait, did I just... Well Dammit.
Last edited by lp; Jan 6, 2018 at 07:45 AM.
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Nothing to add to the topic as usual just negativity. That is sad.