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post #1 of 12 (permalink) Old 08-06-2013, 08:11 AM Thread Starter
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How hot is too hot???

Just upgraded to the shark a month ago from FLHRC, and I have noticed that the engine temp on the shark seems to get hotter faster riding stop and go around town. The engine temp I am referring to is the one displayed on my PV which comes from the ECM. The other day on a short ride I was at a red light and temp was 298F. I just would like to know what is the temp range at which I should start to be concerned. Warmed up on the HWY I average around 258F, but around town it quickly gets close to 300F in traffic.


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post #2 of 12 (permalink) Old 08-06-2013, 08:29 AM
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I don't know "how hot is too hot?" but I do know that my 2012 RGU gets hotter than any other bike I have owned recently, and that would be 5 others. It gets hot in town, it gets hot on long rides, it just flat can't move air through the system and gets hot. I put true duals and a Stage 1 on my last 103" and I can't get that setup on this RG fast enough!
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post #3 of 12 (permalink) Old 08-06-2013, 09:22 AM Thread Starter
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I replaced header in week two. I had forgotten how hot the stock header got. The setup I have now is identical to the one I had on my 2011 FLHRC. Just seems indicated temps rise faster and are close to 300F riding around town. Has not gone above 300 yet, I just want to know if 300F is close to where I should be concerned, or what the default temp is before a cylinder shuts down for cooling??


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2013 FLTRX, FM Jackpot 2-1-2 , FM A/C, 4" Rineharts,PVw/Autotune, Arlen Ness deep cut hot Legs, Progressive mono, Detach Tour Pak, 14" Windvest, Buky 12" Malo, JM XTs and AMP
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post #4 of 12 (permalink) Old 08-06-2013, 09:35 AM
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Talking Same question

I dont have an answer but I have the same question. watching?
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post #5 of 12 (permalink) Old 09-12-2013, 08:47 PM
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I installed a fan & new oil cooler as well as a temp gauge. At 200 degrees the fan comes on, even if I'm riding at highway speed. It seems to stay at 230 unless I really hit traffic. Yesterday was very hot and I was caught in bad NY traffic. It went up to 270.

I removed the cat from the headers and am running richer the engine richer.
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post #6 of 12 (permalink) Old 09-12-2013, 08:50 PM
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Oh, I almost forgot. Before I had the headers removed and ran richer (in other words the bike was bone stock) I had the bike shut down on me in gridlock traffic. Cops were there so I couldn't white line. So all of a sudden the bike started running very rough. As I pulled over it shut down. No, I didn't have the temp gauge yet so I couldn't tell you what temp. But boy was it running hot.
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post #7 of 12 (permalink) Old 09-12-2013, 10:07 PM
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I was told that the twin cams run alot hotter than previous motors for whatever the reasons. I had the same concerns when i put the oil temp gauge in a few years ago. I was told they will and do run about 300 and better. When my cylinder shuts off in traffic its usually about 240ish. Was also told when they tune the bikes they get them well over 300. All of this was told to me by a dealer tech so take it for what its worth.

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post #8 of 12 (permalink) Old 09-12-2013, 10:19 PM
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I'm pushing 6000 miles on my 2013 RGU. I very, very seldom runs above 230 and I have seen 250 only once. I don't drive in the heavy stop and go traffic, pretty much totally country riding and interstate. Went ot SWIII and it was hotter than all get outs, thats when I hit 250. I have the stage I with ceramic pipes. Just FYI. Also, I average 48-50 mpg, sometimes 52. I used the Power Vision Basic to tune it. Maybe my oil temp guage is off?


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post #9 of 12 (permalink) Old 09-13-2013, 04:12 AM
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The 103 averages approx. 300degrees riding temps. That is about normal.


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post #10 of 12 (permalink) Old 09-13-2013, 04:27 AM
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Stock mine use to run hot at times, I did 2 things that solved the problem, oil cooler with fan and engine cooling fan from www.wardspartswerks.com fcs cooling fan.

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