So I. Have been checking around. Been finding guys with head temps in the 350s on a hot day, also on hot days there getting oil temps in the 280s.

 

Also found that on a 90 dregee day oil temps our normal in the 260 to the 275 degree range. But also all my info is found on the net. So keep posting your temps. Think I'll buy an oil temp gauge for sh!% and giggles. I'll post mine when I get them

 

The oil temp is the best barometer to use. Mine has never got above 225-F in stop/go traffic and rarely gets above 200-F on the highway.

You could also install a colder set of spark plugs for summer use which will dissipate the combustion heat to the head castings.

 

Agree on oil cooler not affecting head temps but if you are saying an oil cooler is a waste; gotta disagree. Keeping the oil temp in a reasonable range will extend it's lubricating ability and life. If my oil temp ever hits 280* or above, the first thing I do is dump it and replace it. Oil coolers may not be needed in some parts of the country but in south Texas, they are almost a necessity; we have already seen 102* and it's only June. I have run two oil coolers on a 107" hipo motor; I like to keep oil temps below 230*.

 

I did not say a oil cooler was a waste. I said it would not have much if any effect on head temps.
I also said getting all worked up about it is a waste of time.
Oil cooler in a prefect world will lower oil temps no more than 20 degrees that came fro Jagg them self.
When running standard oils a 10-20 degree drop could help the oil do a better job at lubing the engine.
I am still looking of those HD the net claims melted they never show up.

 

Then we agree; I will take the 20* drop.

 

So far it looks like folks are talking about head temps taken in two different places. The OP is talking about his head temp reading as read off the front head temp sensor from his tuning software. Other folks are using temps taken with a IR gun at the base of the spark plug, apples vs oranges. Your going to see way more heat measuring at the base of the plug with an IR gun vs the front head sensor.

To the OP, if your running that warm you have some tuning to do. Only time I get in the 280 degree range is when caught in stop and go traffic, the majority of the time I run in the 260 range according to the front head temp sensor.

 

What temps are you riding in?outside air

 

Mid to upper 80's.

 

Here is some data from my head temp sensor ...



There is a bit of discussion on a thread in the Dyna section that you may glean some additional info from ... (also some name calling and worthless BS, as usual) ... https://www.hdforums.com/forum/dyna-...emp-guage.html

As you will note, the data is a little over fifteen months old ... while 99% of the data is at or below 312* temps have gone up to ~350 or so ...

Outside air temps range between 30* - 100*+ over the 665 hours represented by the data ...

R/
'Chop