Normal TC Temps???
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Seasoned HDF Member
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From: Poolville
Normal TC Temps???
This is my first TC, I have a 2013 FXDBP with a 103"er. I upgraded the cam to Woods TW-5-6 along with Hillside stage II heads, 10.2:1 comp with a Power Vision tuner. So far I've put about 1800 miles on this year... While cruising my engine temp never went over 270. When I'm in town low rpm, light to light it will get up to 285-290 which I don't think is too bad.. Now Sunday I was coming home from Maine and we got stuck in some real heavy traffic, 10 miles of stop and go. At this point my temps did get up to 320* which I have seen in my built Evo's before but was wondering if this is high for a TC or should I not worry about it.. Keep in mind my EITMS never activated... Thanks...
Grand HDF Member
Joined: Sep 2017
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From: Dubuque, IA
That's normal. I see 285-290 hotrodding around town on a 90+° day. Then 305° idling for 5 or 10 minutes after. 275° hiway cruising at 3000rpm.
I asked about this too and it's normal. No oil cooler.
Twin cams run hotter than evos in general.
I asked about this too and it's normal. No oil cooler.
Twin cams run hotter than evos in general.
Last edited by 60Gunner; Jun 16, 2021 at 03:24 PM.
HDF Community Team
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From: san antonio
Don't know if normal or not but hotter than I like to see. My 02 FLHT all bore 107 would see 225* at cruise in south Texas on 95*+ and have seen 250* in slow stop/go traffic but never got stuck in that situation for 10 miles so I can't say how hot it would have gotten in that situation. However, I can tell that hitting 250* gets me on the shoulder, lane splitting or finding a convenient place to bail out for a while to cool off. 10 row Jagg low mount on that bike with the filter located back near the swing arm pivot and 20W50 synthetic. JMHO
Last edited by djl; Jun 16, 2021 at 05:01 PM.
Grand HDF Member
Joined: Sep 2017
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From: Dubuque, IA
I think it makes a difference where the sensor is located too.
Been thinking about an oil cooler. I've heard they drop the temp considerably. Like 30+° but I know these temps are nothing to be concerned about.
My oil temps never get any higher than 240. Usually closer to 230°.
I've seen head temps of 360ish which is nothing either. Shooting them with an infrared right next to the spark plugs.
Been thinking about an oil cooler. I've heard they drop the temp considerably. Like 30+° but I know these temps are nothing to be concerned about.
My oil temps never get any higher than 240. Usually closer to 230°.
I've seen head temps of 360ish which is nothing either. Shooting them with an infrared right next to the spark plugs.
From Jamie at FuelMoto:
There are several temp related channels within the Delphi ECM. The most common channel used is Engine Temperature which is based directly off the 0-5V signal from the ET sensor on the front cylinder head, this channel is reported on the databus as ET. Generally speaking when we speak of engine temp we refer to the data from this channel, we usually consider 240-320F about the normal range relative to conditions, engine mods, and other variables. The second channel is Head Temperature which this is a bit more complex, it is a model the ECM calculates based on the ET sensor, the intake air temp (IAT) and other factors. Head Temp is used within the ECM primarily for Spark Temp correction, for most combination it will run between 260-400F. Note: Heat Temp has been recently added to the PV channel list an is reported as HeadT. The last channel is Coolant Temp which is active on twin cooled and V Rod applications. Hope this info helps...
There are several temp related channels within the Delphi ECM. The most common channel used is Engine Temperature which is based directly off the 0-5V signal from the ET sensor on the front cylinder head, this channel is reported on the databus as ET. Generally speaking when we speak of engine temp we refer to the data from this channel, we usually consider 240-320F about the normal range relative to conditions, engine mods, and other variables. The second channel is Head Temperature which this is a bit more complex, it is a model the ECM calculates based on the ET sensor, the intake air temp (IAT) and other factors. Head Temp is used within the ECM primarily for Spark Temp correction, for most combination it will run between 260-400F. Note: Heat Temp has been recently added to the PV channel list an is reported as HeadT. The last channel is Coolant Temp which is active on twin cooled and V Rod applications. Hope this info helps...
Last edited by 60Gunner; Jun 16, 2021 at 04:44 PM.
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In traffic Hot 100 degree day not moving you could see 360. Don't get all wrapped up in it. AIR cooled that is how they roll. Oil coolers will do darn little for It. 3You could look at something like love jugs fans they do Cool it down.
Do not compare head temps and oil temps two different things and not much in common.
Do not compare head temps and oil temps two different things and not much in common.
HDF Community Team
Joined: Jun 2006
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From: san antonio
OK, 60Gunner says "285*-290* hot rodding around town" and "then 305 idling for 5 or 10 minutes" and then says "my oil temps never get any higher than 240"; usually more like 230*", so I am confused.
Smitty says not to worry if oil temps see 360* and oil coolers don't do much to help.
The all bore 107 motor referenced in my previous post pulled 124T/110HP on the dyno and was ridden hard and put up wet but never saw temps over 250* so I think the 10 row Jagg helped cool the oil. Everyone can choose how they want to deal with oil temps but anything over 250* and certainly 300* or more is not kind to motor oil and impairs the lubricating function which is not recovered when the oil cools down. JMHO but I believe motor oil should be kept as cool as possible in an air cooled motor as heat is the enemy. JMHO.
http://www.wildwestcycle.com/f_oiltempdegradation.html
Smitty says not to worry if oil temps see 360* and oil coolers don't do much to help.
The all bore 107 motor referenced in my previous post pulled 124T/110HP on the dyno and was ridden hard and put up wet but never saw temps over 250* so I think the 10 row Jagg helped cool the oil. Everyone can choose how they want to deal with oil temps but anything over 250* and certainly 300* or more is not kind to motor oil and impairs the lubricating function which is not recovered when the oil cools down. JMHO but I believe motor oil should be kept as cool as possible in an air cooled motor as heat is the enemy. JMHO.
http://www.wildwestcycle.com/f_oiltempdegradation.html
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
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From: Dubuque, IA
In traffic Hot 100 degree day not moving you could see 360. Don't get all wrapped up in it. AIR cooled that is how they roll. Oil coolers will do darn little for It. 3You could look at something like love jugs fans they do Cool it down.
Do not compare head temps and oil temps two different things and not much in common.
Do not compare head temps and oil temps two different things and not much in common.
Probably not much lower than 220-230 really. That's why the fan assisted ones have a switch to shut 'em off or don't turn on until the oil reaches a certain temp.
I did drop my idle temp like 15° by advancing my idle timing 4° from 16/17 to 20 and I run open loop with my cruise AFR @ 13.8 and idle @ 13.5. I could give a **** about mpg.
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From: Somewhere SW
This is my first TC, I have a 2013 FXDBP with a 103"er. I upgraded the cam to Woods TW-5-6 along with Hillside stage II heads, 10.2:1 comp with a Power Vision tuner. So far I've put about 1800 miles on this year... While cruising my engine temp never went over 270. When I'm in town low rpm, light to light it will get up to 285-290 which I don't think is too bad.. Now Sunday I was coming home from Maine and we got stuck in some real heavy traffic, 10 miles of stop and go. At this point my temps did get up to 320* which I have seen in my built Evo's before but was wondering if this is high for a TC or should I not worry about it.. Keep in mind my EITMS never activated... Thanks...
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Thread Starter
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Seasoned HDF Member
Joined: Mar 2010
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From: Poolville
Thanks everyone, I do appreciate the feedback and just to confirm I'm definitely not talking oil temp here but just regular engine temp. I really wasn't worried about it because I never had any detonation starting off or anything like that because of high temps or even noisy rockers because of high temps and high oil temps like I used to get on my hot rod Evo.. And honestly I never really had anything to monitor engine temp on my Evo but my oil temps on super hot days would get up to 225 sitting in traffic which is common I know but it's not detrimental even at that temp. My Shovelhead would get up to 245 in the tank and I would get a little valve train noise but nothing severe.. like I said earlier that my EITMS never kicked out the rear cylinder so I took that as a good sign.. And just a note, I have read that most oils will start to fail or show signs of thermal breakdown at 280* that's when you really need to start worrying...
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From: poway
Don't know if normal or not but hotter than I like to see. My 02 FLHT all bore 107 would see 225* at cruise in south Texas on 95*+ and have seen 250* in slow stop/go traffic but never got stuck in that situation for 10 miles so I can't say how hot it would have gotten in that situation. However, I can tell that hitting 250* gets me on the shoulder, lane splitting or finding a convenient place to bail out for a while to cool off. 10 row Jagg low mount on that bike with the filter located back near the swing arm pivot and 20W50 synthetic. JMHO
I take it that this was oil temps and not engine temps?