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post #1 of 26 (permalink) Old 06-05-2012, 11:46 AM Thread Starter
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Oil/Head temp?

Having never had a temp gauge for either, I used to ride, blissfully unaware of either important bits of information. Now, I've got Dakota Digital gauges that show both.

The oil temp gauge can be set to flash when it gets too high; the default is 230°. On longer rides it gets into the mid 230s, and during a slow parade-like ride a few weeks ago, it hit 245°. Should I be concerned, or is the default conservatively low?

IIRC, the EITMS kicks in at 300° head temp. What temp is cause for alarm?

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post #2 of 26 (permalink) Old 06-05-2012, 11:51 AM
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Your default is set too low. The best way to fix it is take a piece of black electrical tape and place it across the temperature readout. I promise you your motor will run much smoother that way.
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post #3 of 26 (permalink) Old 06-05-2012, 11:55 AM
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Your default is set too low. The best way to fix it is take a piece of black electrical tape and place it across the temperature readout. I promise you your motor will run much smoother that way.
I agree 230* is fine and in parade duty stuff it can approach 280*. That is why quality oil is a must but on the bright side oils of today are mostly good and much better then oils of yester year.
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post #4 of 26 (permalink) Old 06-05-2012, 12:14 PM Thread Starter
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Your default is set too low. The best way to fix it is take a piece of black electrical tape and place it across the temperature readout. I promise you your motor will run much smoother that way.
Heh. I can change the setting.

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post #5 of 26 (permalink) Old 06-06-2012, 01:14 AM
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Do you have pictures of the install of these gauges? I'm interested.

My Rodger McEwan gauges have seen 300+ temps which makes me wonder about (a) the accuracy of the gauge or (b) capability of the bike to keep the oil below critical temps. I've got the engine torn apart right now for a DME rebuild and no damage on any of the top end components. In fact after 30,000 miles the wear was quite negligible on the cams, rocker arms, and valves. Just a little scuffing on the rocker arms.

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post #6 of 26 (permalink) Old 06-06-2012, 01:33 AM Thread Starter
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bikepsych, no I didn't take any pictures of the gauge install. It was pretty straightforward: pull old gauges out, put new gauges in, plug in all the connectors. Only minorly tricky part was putting the sensor in for oil temp. I waited for an oil change interval for that part. Had to unscrew a plug (different than the drain plug) from the oil pan and put the sensor in its place. Feed the wire up the frame to the fairing and it's done.

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post #7 of 26 (permalink) Old 06-06-2012, 06:47 AM
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my wrench told me McEwen oil temp gauge is the most accurate u can buy. I added a Jagg fan assisted oil cooler and my oil temp yesterday on a 94 degree hot day was 215. Before the oil cooler, cam change and dyno my temps would run 260 to 300.

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post #8 of 26 (permalink) Old 06-06-2012, 07:21 AM
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I was told by a HD tech that when they get ready for a dyno tune that they need to get the bikes up to about 300* in order to get everything to read properly. He also told me that the twin cam motor will run alot hotter than previous motors. On a 85* day mine runs about 220ish

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post #9 of 26 (permalink) Old 06-06-2012, 07:12 PM
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Quote:
Originally Posted by Grind View Post
Having never had a temp gauge for either, I used to ride, blissfully unaware of either important bits of information.
This is why I keep putting off replacing the air temp gauge with the oil temp gauge. I have ridden my bike in temperatures from 35-110 degrees F hours on end and it is still running fine. I figure if the bike cannot handle functioning in the real world environment, I don't need it. I don't exactly live in a "cool zone", so far it has managed to pass 56K miles (all on dino oil) without falling apart.

Unless your bike is running different than before the gauges where changed, you should be fine.
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post #10 of 26 (permalink) Old 06-06-2012, 08:57 PM
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Originally Posted by rlaf75 View Post
I was told by a HD tech that when they get ready for a dyno tune that they need to get the bikes up to about 300* in order to get everything to read properly. He also told me that the twin cam motor will run alot hotter than previous motors. On a 85* day mine runs about 220ish
I think he was referring to cylinder head temps at 300, not oil temp.
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