Head Temps
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Road Warrior
Joined: Jul 2013
Posts: 1,624
Likes: 13
From: Fort Worth
Head Temps
I was reading a thread that another OP made (https://www.hdforums.com/forum/touri...er-vision.html) and commented that my engine temp runs 250 and head temp at 350 while cruising at 60 and I am using my Power Vision gauges to get these numbers. This is with an air temp in the mid 80s on flat ground. One person responded saying my head temps were way too high so I did some digging on the internet. It looks like most people say that 300 degrees is the right head temp to have.
To double check my numbers, I decided to a quick ride tonight. I never got any faster than 55 and the temp was in the low 70s. According to the PV screen, my engine temp was mid to low 240s and my head temp was 320-330 degrees. When I got home, I grabbed my trusty IR temp gun and read the temps on each head at the spark plug base. The front was 279 and the rear was 326. These temps were taken within 1 minute of shutdown.
Currently, my setup is a 13 FLHTCU with a stage I. I am running a PV with the map that Jamie sent from Fuel Moto. I thought I was running an Auto Tune map but had never loaded on to my PV. I know that timing has a lot to do with temps too. Below is a picture of the AFR table. I've also attached the tune.
What are your thoughts?
ETA: I double checked my oil level just to be sure.... I am good at about 6 dots up from the low end.
To double check my numbers, I decided to a quick ride tonight. I never got any faster than 55 and the temp was in the low 70s. According to the PV screen, my engine temp was mid to low 240s and my head temp was 320-330 degrees. When I got home, I grabbed my trusty IR temp gun and read the temps on each head at the spark plug base. The front was 279 and the rear was 326. These temps were taken within 1 minute of shutdown.
Currently, my setup is a 13 FLHTCU with a stage I. I am running a PV with the map that Jamie sent from Fuel Moto. I thought I was running an Auto Tune map but had never loaded on to my PV. I know that timing has a lot to do with temps too. Below is a picture of the AFR table. I've also attached the tune.
What are your thoughts?
ETA: I double checked my oil level just to be sure.... I am good at about 6 dots up from the low end.
Last edited by FinalShot; May 26, 2014 at 01:14 PM.
Road Warrior
Joined: Sep 2008
Posts: 1,465
Likes: 16
From: Nor Cal
I'm also looking for info. I've done searches on this forum and two other forums, and have not found a clear answer. I'm running about 300F front head 320F rear measured at the spark plug recesses with an infrared thermometer parked and idling after riding on the freeway on a hot day. On my S&S ProTune 2 software using the engine temperature sensor it is 270F. I haven't had any Diagnostics Trouble Codes for overheating.
I took my thermometer with me on a HD demo ride event and measured a Twin Cooled at the spark plug and it read 310F right after shutdown..
I took my thermometer with me on a HD demo ride event and measured a Twin Cooled at the spark plug and it read 310F right after shutdown..
Last edited by DanDman; May 26, 2014 at 12:39 AM.
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
Likes: 19
From: Naples FL / Pine TWP PA
Your head temps rise as soon as the motor is shut down for a few minutes. Why don't you use the temp sensor built into the cylinder head and measure with the Power Vision moving down the road. 320 head temp kicks in EITMS. I can tell you in closed loop I run 250 - 260 Cylinder head temp on a warm day while moving down the Interstate. A cool day is 230 - 240. Sitting in traffic or moving slowly around town I used to shoot up over 300. I put Wards Parts fans on it and now I don't ever see over 260.
70 Degree temps, I seen head temp at 320-340, and oil temp at 250, running 80. I didn't think that was out of the ordinary but maybe I am wrong. I've just got the tune from fuel moto in it so far as I have not worked with the auto tune yet with my Power Vison.
I guess if that head temp is to high, how do I fix it?
I guess if that head temp is to high, how do I fix it?
Thread Starter
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Road Warrior
Joined: Jul 2013
Posts: 1,624
Likes: 13
From: Fort Worth
You must have missed it in my original post. I am using the PV for the temps. The IR was just to double check what temps the PV was seeing.
Ultimate HDF Member
Joined: Dec 2010
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From: wet coast BC
my engine temp runs 250 and head temp at 350
where is the sensors located, I only know of the head temp on front
where is the sensors located, I only know of the head temp on front
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Road Warrior
Joined: Jul 2013
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From: Fort Worth
Don't know for sure but plan to look in my service manual. I'm reading my numbers from my Power Vision.
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Outstanding HDF Member
Joined: Jan 2007
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From: Naples FL / Pine TWP PA
Well I tuned the timing first, got all the knock out, then I worked on the AFR via the 02 sensor bias voltage. I worked on fuel until I got the cylinder head temps where I wanted them. I tuned specifically for cylinder head temp because I care more about reliability than I do max power.
Outstanding HDF Member
Joined: Jan 2007
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From: Naples FL / Pine TWP PA
Got it.