EVO All Evo Model Discussion

How hot should the engine be running-head temp?

Thread Tools
 
Search this Thread
 
  #1  
Old 05-28-2009, 10:01 PM
phat96's Avatar
phat96
phat96 is offline
Road Warrior
Thread Starter
Join Date: Mar 2007
Location: Cave Creek, AZ
Posts: 1,912
Likes: 0
Received 1 Like on 1 Post
Default How hot should the engine be running-head temp?

hey guys my - no more fried thighs - are getting pretty darn hot on the left leg, I did switch to dual exhaust, but I'm also wondering if I'm running to lean. What should an average be when reading the temperture on the heads.

I did buy a Thermal temp gun to see how bad it is, but have to wait for it to arrive, just getting ready for when it arrives.
Hi John at mia cycles are you out there?
Thanks
 

Last edited by phat96; 05-28-2009 at 10:04 PM.
  #2  
Old 05-29-2009, 08:52 AM
Dr.Hess's Avatar
Dr.Hess
Dr.Hess is offline
Seasoned HDF Member
Join Date: Aug 2007
Location: NW AR
Posts: 8,046
Received 2,763 Likes on 1,367 Posts
Default

Depends on a lot of things, like if you're moving or stationary, ambient temp, load, etc. On our Sportster, I have datalogged it with the EFI and typical cruising temp is around 180F, say 160-190F. If you let it sit idling, it will go up over 220F. A box fan pointed at the motor drops it down quite fast. This is from a calibrated thermistor bolted to the head at the middle motor mount on the front cylinder head.
 
The following users liked this post:
Mick574 (07-01-2022)
  #3  
Old 05-29-2009, 09:11 AM
phat96's Avatar
phat96
phat96 is offline
Road Warrior
Thread Starter
Join Date: Mar 2007
Location: Cave Creek, AZ
Posts: 1,912
Likes: 0
Received 1 Like on 1 Post
Default

Thanks Dr Hess, yes this is in a stationary position.
 
  #4  
Old 05-29-2009, 09:24 AM
Milan's Avatar
Milan
Milan is offline
Banned
Join Date: Apr 2009
Posts: 112
Likes: 0
Received 0 Likes on 0 Posts
Default

If your oil temp gets above 230F you might consider getting a oil cooler and one of my fan kits.
Milan
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DavidStiebel
Sportster Models
8
09-16-2017 10:23 AM
Fritzables
Ignition/Tuner/ECM/Fuel Injection
6
04-22-2014 05:37 PM
dFREDb
Dyna Glide Models
5
06-10-2009 03:01 PM
smadge
Sportster Models
11
03-30-2009 02:52 PM
sheldong
Touring Models
14
08-28-2007 07:12 PM



Quick Reply: How hot should the engine be running-head temp?



All times are GMT -5. The time now is 09:07 PM.