Engine temp
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
RE: Engine temp
In these 90° days, my oil temperature peaks around 200° as long as I'm moving greater than 45mph, a bit higher moving slower. It has maxed out at 230° several times in heavy traffic during hot weather, but has never exceeded that temperature. I have an oil cooler, which helps control peak oil temperatures, reducing them probably 20-25°. Synthetic oil will make a smaller difference, perhaps 5-10°. The fairing lowers help with cooling at speed by channeling air toward the engine and creating a vacuum behind it to exhaust the hot air, but they also hurt cooling when not moving by trapping the air.
Elite HDF Member
Joined: Oct 2006
Posts: 4,602
Likes: 5
From: Southern California - Palm Springs Area
RE: Engine temp
depends on AIR temp &\\; what Oil your using.... \\; Normal this ime of year in the So Cal Desert Areas  \\; 200 - 230 \\; (last year seen a couple of 250 at times)
Thread Starter
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Novice
Joined: Apr 2008
Posts: 20
Likes: 0
From:
RE: Engine temp
My reason for asking is with just the standard map downloaded from the cert pick maps my engine was running around 180 well moving. Now that I have dyno map it runs around 260. This is what I am getting when I do a data log with lap top. should I be concerned???
Cruiser
Joined: Apr 2008
Posts: 101
Likes: 0
From: Mobile, Alabama
RE: Engine temp
I have just made a post with the same questin as yours. \\; I got my bike out of the shop Friday and today the temp reached 260, my first reaction is that the timing has been set incorrectly. \\; I never reached anything over 230 on a normal day before the dyno.
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Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
RE: Engine temp
If you have already posted oil temps, please specify if it's an oil temp gauge in the diptstick, oil temp sending unit in the oil pan, etc.
 \\;
As for running hotter after a dyno tune v. pre-dyno tune, the higher temp is probably a function of leaning the mixture to get a more complete burn of the fuel. \\; \\; One of the consequences of a richer mixture/less timing, is the unburned fuel cools the combustion chamber.
 \\;
Also, the SERT data log \\;measures \\;engine temps, not oil temp.
 \\;
As for running hotter after a dyno tune v. pre-dyno tune, the higher temp is probably a function of leaning the mixture to get a more complete burn of the fuel. \\; \\; One of the consequences of a richer mixture/less timing, is the unburned fuel cools the combustion chamber.
 \\;
Also, the SERT data log \\;measures \\;engine temps, not oil temp.
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Tourer
Joined: Aug 2007
Posts: 466
Likes: 0
RE: Engine temp
youre probably reading the head temp on your laptop not the oil temp. head temp 260 is normal for head temp, i have a thundermax tuner and by default my check engine light wont come on until the heads reach 300.