How’s it goin, just got a question for anybody that knows. I just had my 110 engine rebuilt from the crank up and had it dynoed after it was built. The dyno guy said he tuned it a little rich to help with heat. I’m about 250 miles into the break in and noticed that it gets extremely hot when stopped, even if only for a short amount of time. Just wondering if new engines run a little hot until they are broken in? I also get this top end noise once at op temp and I stop

 

I also get this top end noise once it gets hot

 

No, newly rebuilt motors don't run hot while breaking in and then run cooler. Are you saying the the motor runs hotter now that before the rebuild? No oil temp gauge? What tuner was used for the tune? Some tuning software records cylinder head temps and it would be useful to know what those are. Get an infrared temp guage and check the cylinder head temp near the spark plug when the motor is hot; guages are cheap.

What cams? With that open A/F, if there is any reversion, you will hear it through the air filter. I don't hear any valve train noise but the video is pretty short.

 

Theres definitely reversion being heard through the air filter. What was it tuned with? If it's hot then the tune is suspect...regardless of how rich he says it is. Was it a canned map? Dyno tune? Dyno sheet with afr graph?

 

Its got s&s 585 cams with their 10:6 pistons and s&s throughout the camchest. It was tuned on a dyno after being rebuilt with a power vision. I only have a dyno sheet with the hp/tq curves. I am running a tbr pipe right now that's been falling apart on me and I've rewelded a couple times(probably getting a D&D bobcat), would a different pipe get rid of reversion or just shift it from idle to a different rpm? I took that video after riding without stopping for 15 minutes then let idle for about 20 seconds before I started recording

 

Head temp can run from about 260*-400* depending on several different variables, i.e., A/F, timing, compression, etc. The Power Vision records a variety of temperatures and if your tuner knows how to retrieve them, he can. I think the OP really needs to first determine if the motor really is running hot before taking measures to reduce the heat. 110" motors are known to run a bit on the hot side and with the perofrmance modes, adding an oil cooler would be a good idea

 

Motors can run warmer after a rebuild as they seem to cool off after the motor has had a chance to form carbon on the pistons, combustion chamber and exhaust port. That could take 1000-2000 miles. With 250 miles the rings should be seated but might take longer. It's not going to be a drastic change tho. If your rebuild up compression / performance the motor will likely run hotter. As far as the noise goes, it sounds like the typical intake reversion. The engine temps you are reading seem reasonable.

 

Max,
If the motor was truly running hot, wouldn't the EITMS be kicking in?

 

I don't know. Does the 17 dyna even have it? IIRC Dynas were still Throttle By Cable. How do you enable it? TBW systems you roll the throttle off. Can't be done on TBC. I suspect it was something mainly for TBW baggers. My 17 RK has it. Mine did it at the drop of a hat and it irritates the hell out of me so it's turned off. Road and Ultras Glides have ambient temp gages that they use to enable it. With all the crap on them, the motors shed a lot of heat directed towards the riders legs. on the right side.

 

reversion is caused by the cam...some are worse than others. The air cleaner can play a roll too...open filter like you have and it's basically a speaker for the motor. Put a cover on it and it will definitely mask the sound. If max and djl are saying your Temps are OK and normal I would trust those guys.