Curious, at what point on the dial do you hear your fan come on? - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 37 Old 05-04-2018, 01:27 PM Thread Starter
2nd Gear
 
Join Date: Apr 2018
Location: South of Charlotte, NC
Posts: 338
Curious, at what point on the dial do you hear your fan come on?

I have been a bit above halfway on the temp gauge so far since I got the bike a few weeks ago and have yet to hear the fan come on. Hasn't been super hot outside either and this bike temp gauge jumps around like cheap hooker so when do most of you notice the fan coming on. Like how close to the red?
patroy75 is offline  
Sponsored Links
Advertisement
 
post #2 of 37 Old 05-04-2018, 02:09 PM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,670
Garage
I have been playing with a Gen 1 radiator and fan switch the past few days. The fan comes on at a head temperature of 215F (which is what you see on the gauge) which correlates to 202F at the bottom of the radiator.

It turns off at 207F at the head and 189F at the bottom of the radiator. All of this is a static test on the side stand; I don't know what the rolling equilibrium numbers will be

215F on your 2014 should be just above the screw.

On my Gen 2 radiator, I see a 37F spread from the head to the bottom of the radiator when riding (I call this the 'rolling equilibrium' because I like to make up fancy sounding shit). The switch an the Gen 2 is supposed to activate at 203F to 214F, so you might expect to see the fan come on at a head temperature of 240F to 251F. That is about three needle widths from the red.

Tom [email protected]

Some days I feel like playing it smooth. Some days I feel like playing it like a waffle iron. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem

Last edited by Tom Schmitz; 05-04-2018 at 02:12 PM.
Tom Schmitz is online now  
post #3 of 37 Old 05-04-2018, 02:33 PM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,670
Garage
For reference,

Tom [email protected]

Some days I feel like playing it smooth. Some days I feel like playing it like a waffle iron. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
Tom Schmitz is online now  
 
post #4 of 37 Old 05-04-2018, 02:38 PM
5th Gear
 
Join Date: Jan 2011
Posts: 4,414
Quote:
Originally Posted by patroy75 View Post
I have been a bit above halfway on the temp gauge so far since I got the bike a few weeks ago and have yet to hear the fan come on. Hasn't been super hot outside either and this bike temp gauge jumps around like cheap hooker . . .
Just wondering . . . what's the difference between how cheap hookers and how expensive hookers jump around?



KLR engine temperatures will vary markedly in operation; less so with a Thermo-Bob installed. Some insist the "heat cycling" causes severe, drastic, and irreversible damage to unknown engine components, but . . . actual data on the premise remains elusive.

Same with, "thermal shock," the temperature difference within the cooling system network when the thermostat opens . . .

Regardless, as long as your temperature gauge needle stays out of the far red zone; fear not. Aside from the possible long-term calamities mentioned, your bike is operating within safe limits.
Damocles is online now  
post #5 of 37 Old 05-04-2018, 04:29 PM Thread Starter
2nd Gear
 
Join Date: Apr 2018
Location: South of Charlotte, NC
Posts: 338
Quote:
Originally Posted by Damocles View Post
Just wondering . . . what's the difference between how cheap hookers and how expensive hookers jump around?



KLR engine temperatures will vary markedly in operation; less so with a Thermo-Bob installed. Some insist the "heat cycling" causes severe, drastic, and irreversible damage to unknown engine components, but . . . actual data on the premise remains elusive.

Same with, "thermal shock," the temperature difference within the cooling system network when the thermostat opens . . .

Regardless, as long as your temperature gauge needle stays out of the far red zone; fear not. Aside from the possible long-term calamities mentioned, your bike is operating within safe limits.
If you have to ask, you can't even afford the cheap hookers.
patroy75 is offline  
post #6 of 37 Old 05-04-2018, 05:46 PM
5th Gear
 
Join Date: Jan 2011
Posts: 4,414
Quote:
Originally Posted by patroy75 View Post
If you have to ask, you can't even afford the cheap hookers.
Then . . . I'll never know, unless YOU tell me, patroy75!

Damocles is online now  
post #7 of 37 Old 05-04-2018, 06:28 PM
2nd Gear
 
Join Date: Mar 2017
Posts: 391
I may have to block this site!

All this talk about "cheap hookers" and "just above the screw."
Bluehighways is offline  
post #8 of 37 Old 05-05-2018, 09:25 AM
2nd Gear
 
Join Date: Jul 2013
Location: Spring Grove, IL
Posts: 107
Quote:
Originally Posted by Tom Schmitz View Post
For reference,
I don't have a fancy temp gauge on my bike, and I've never measured how hot things are, so can't provide as much insight into the answer as the others have. However, I can answer the original question that was asked. The fan on my bike comes on about 3/4 to 7/8 of the way to top of the gauge, so just a bit before the needle reaches the red zone. It doesn't happen very often. Typically it has to be pretty hot out and I have to be sitting. Once the fan comes on, the temp drops fast.
tjduexjr is offline  
post #9 of 37 Old 05-05-2018, 10:04 AM
3rd Gear
 
dan filipi's Avatar
 
Join Date: Feb 2017
Location: Van Nuys Cali
Posts: 619
Garage
Quote:
Originally Posted by tjduexjr View Post
I don't have a fancy temp gauge on my bike, and I've never measured how hot things are, so can't provide as much insight into the answer as the others have. However, I can answer the original question that was asked. The fan on my bike comes on about 3/4 to 7/8 of the way to top of the gauge, so just a bit before the needle reaches the red zone. It doesn't happen very often. Typically it has to be pretty hot out and I have to be sitting. Once the fan comes on, the temp drops fast.
Mine reacts the same.

2016 KLR 650
2017 BMW S1000RR (traded in for
2018 Ducati V4S
1983 GL1100 Goldwing
2017 Yamaha R1
dan filipi is offline  
post #10 of 37 Old 05-05-2018, 01:06 PM
4th Gear
 
GoMotor's Avatar
 
Join Date: May 2014
Location: Texas
Posts: 1,261
To test your fan and fan switch let the engine idle until the needle gets up near the red zone. You should hear the fan come on and feel hot air blowing out the left side under the gas tank.
GoMotor is offline  
Sponsored Links
Advertisement
 
Reply

Tags
fan, radiator, temperature

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Just curious... ArcticKLR The Off Topic Lounge 21 09-26-2012 10:31 PM
Dial-A-Jet Wynter Gadgets & Gizmos 8 03-31-2011 03:06 PM
Just curious... Lockjaw The Off Topic Lounge 4 06-25-2010 02:08 PM
Just curious.... Lockjaw You've been spotted 2 05-26-2010 09:26 AM
TDT-III 'Dial-up friendly' pics cherokee_chuck Travel Log & Trip Reports 7 05-22-2008 02:40 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome