Operating Temperature Range - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 25 (permalink) Old 04-08-2011, 02:17 PM Thread Starter
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Operating Temperature Range

Does anyone know the operating temperature range of a 2004 RC51?
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post #2 of 25 (permalink) Old 04-08-2011, 02:28 PM
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On stock motors I believe thermostat is fully open at 203F and best mix @210 to 212F but open to others input.
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post #3 of 25 (permalink) Old 04-08-2011, 03:05 PM Thread Starter
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Thanks, I just bought my 2004 RC51 two days ago. Got it for 5500. 11,000 miles. Sato exhaust. Nice bike. I'll look into the temps running here in Las Vegas this summer.
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post #4 of 25 (permalink) Old 04-08-2011, 03:26 PM
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Outstanding purchase! read fan upgrade info on this forum. In FL after running back roads and hitting t\lights I reach 220F which will relay your radfans. My RC has reached 230F before process cools to sub220F. Familiarize where you can see fan body through fairing frame crease and make sure they're spinning. I painted yellow marks on mine, like old time timing marks, to make sure they were engaged. Gives me peace of mind!
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post #5 of 25 (permalink) Old 04-08-2011, 05:45 PM
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My system has only reached 224F once, and that was due to a poorly patched hole in the left radiator by the previous owner/bozo.
After I fixed the cooling system, its been working fine.

My engine will get to 221F in stop & go traffic, but will cool down quickly to around 205-208F once moving.
When briskly moving in the city, it will hover around 205-208F.
If I ride in country, I often see sub-200F and I've seen 179F one morning.

The critical temperature is 251F where the temp indicator will start to blink on the panel.
Pull over and cool that engine down immediately when that occurs.

It's interesting how sensitive the cooling system is.
I've been riding along on a country road and pass under a shade tree and immediately see a 1F drop in temp before it returns.
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post #6 of 25 (permalink) Old 04-08-2011, 06:17 PM
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For Vegas...Engine Ice is a must.



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #7 of 25 (permalink) Old 04-09-2011, 12:06 AM Thread Starter
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Where do I get Engine Ice?
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post #8 of 25 (permalink) Old 04-09-2011, 08:01 AM
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Ask any of the dealers that are sight sponsors or a reputable dealer in you area should have it.



The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #9 of 25 (permalink) Old 04-09-2011, 09:16 AM
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does the engine ice make a noticeable difference?

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post #10 of 25 (permalink) Old 04-11-2011, 12:02 AM Thread Starter
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Operating Temperature Range

I just Changed my Coolant to Engine Ice on My 2004 RC51 on Saturday. I drove the bike to work today and it it running about 30 degrees cooler than before. a huge noticable difference.
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