How hot is too hot?
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2nd Gear
Joined: Aug 2013
Posts: 6
Likes: 2
From: Issaquah WA
How hot is too hot?
I have a 2014 CVO Roadking with a Dynajet Power Vision installed. This allows me, among other things, to monitor my engine's performance parameters and temperatures. From the beginning I noticed the engine ran hot. Normal operating temps were 275F eng. and 305F head on the freeway with excursions past Engine Idle Temperature Management (EITMS) which kick in at 295F eng. when exiting freeway. In traffic, the EITMS will kick in and the temps climb to 310-320 eng and 330-345 head. EVERY SINGLE DEALER HAS ASSURED ME THIS IS NORMAL. I put 24k miles on the bike by June of 2015 and after riding from Santa Cruz to Seattle on a day ride, the engine developed a squeal. After tearing the motor down a few bearings in a lifter were determined to be missing. The pistons showed evidence of extreme heat( scuffing). I change my oil every 3000 miles and my filter every 1500. Sure, I average 85mph which does contribute to elevated temps, but why is Harley saying these temps are normal? I have since installed a Jim's Force Flow fan and my temps are 215 eng and 245 head. I'm sure these temps are too low for Harley, but I'll take it. BTW, the fan is loud, but effective.
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Joined: Dec 2014
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From: SWFL
I have a 2014 CVO Roadking with a Dynajet Power Vision installed. This allows me, among other things, to monitor my engine's performance parameters and temperatures. From the beginning I noticed the engine ran hot. Normal operating temps were 275F eng. and 305F head on the freeway with excursions past Engine Idle Temperature Management (EITMS) which kick in at 295F eng. when exiting freeway. In traffic, the EITMS will kick in and the temps climb to 310-320 eng and 330-345 head. EVERY SINGLE DEALER HAS ASSURED ME THIS IS NORMAL. I put 24k miles on the bike by June of 2015 and after riding from Santa Cruz to Seattle on a day ride, the engine developed a squeal. After tearing the motor down a few bearings in a lifter were determined to be missing. The pistons showed evidence of extreme heat( scuffing). I change my oil every 3000 miles and my filter every 1500. Sure, I average 85mph which does contribute to elevated temps, but why is Harley saying these temps are normal? I have since installed a Jim's Force Flow fan and my temps are 215 eng and 245 head. I'm sure these temps are too low for Harley, but I'll take it. BTW, the fan is loud, but effective.
My 2016 Low Rider S has I believe the same motor as yours, and I was watching my ET break 300 at red lights when I first got it. I didn’t like that regardless of what anyone says is “ok”. Mostly because of how it cooks the oil, even though I’m using Red Line syn. Anyway, I tried throwing more fuel into the tune (with the help of a dyno) and it helped a little, but not much. Then I added an Ultracool fan assisted oil cooler, which also helped, a little. The closer was a set of Wards fans. With the fans and oil cooler combo, and I haven’t broken 265 on the hottest of days, coming to a stop after screaming down the highway to hit typical NY “where the hell did this come from” bumper to bumper traffic. I can sit there all day no problem.
Installed a Love Jugs mini on my Road Glide as well, and it runs even cooler.
I never fear traffic jams anymore.
Last edited by Mchad; Mar 20, 2018 at 03:09 PM.
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Thread Starter
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2nd Gear
Joined: Aug 2013
Posts: 6
Likes: 2
From: Issaquah WA
Im a big fan of fans (see what I did there?)
My 2016 Low Rider S has I believe the same motor as yours, and I was watching my ET break 300 at red lights when I first got it. I didnt like that regardless of what anyone says is ok. Mostly because of how it cooks the oil, even though Im using Red Line syn. Anyway, I tried throwing more fuel into the tune (with the help of a dyno) and it helped a little, but not much. Then I added an Ultracool fan assisted oil cooler, which also helped, a little. The closer was a set of Wards fans. With the fans and oil cooler combo, and I havent broken 265 on the hottest of days, coming to a stop after screaming down the highway to hit typical NY where the hell did this come from bumper to bumper traffic. I can sit there all day no problem.
Installed a Love Jugs mini on my Road Glide as well, and it runs even cooler.
I never fear traffic jams anymore.
My 2016 Low Rider S has I believe the same motor as yours, and I was watching my ET break 300 at red lights when I first got it. I didnt like that regardless of what anyone says is ok. Mostly because of how it cooks the oil, even though Im using Red Line syn. Anyway, I tried throwing more fuel into the tune (with the help of a dyno) and it helped a little, but not much. Then I added an Ultracool fan assisted oil cooler, which also helped, a little. The closer was a set of Wards fans. With the fans and oil cooler combo, and I havent broken 265 on the hottest of days, coming to a stop after screaming down the highway to hit typical NY where the hell did this come from bumper to bumper traffic. I can sit there all day no problem.
Installed a Love Jugs mini on my Road Glide as well, and it runs even cooler.
I never fear traffic jams anymore.
Exactly. Until I installed the fan, I only rode the Dyna in traffic. Knowing the temp saved my second engine. Had I just trusted HD, I wouldn't know just how hot my engine oil was getting. Is it coincidence that there is no head temp gauge on the older TCs?