My Bike runs HOT. . . Why??? - Page 2 - Honda RC51 Forum : RC51 Motorcycle Forums
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post #11 of 17 (permalink) Old 01-31-2012, 10:42 AM
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Originally Posted by 1971allchaos View Post
Jondog- I have read most all the info , compiled on this topic.. Here in the eastern mountains, we don't have the temps, ya'll experience.
How much of a difference- removing the one fan, make?
I don't understand your question?
I only removed the fan for cleaning, I re-installed it.

John, 2000 RC51 #000100

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post #12 of 17 (permalink) Old 01-31-2012, 07:02 PM
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With out looking at the book...is there anyway to drain the block?? Like pulling the water pump or anything?

James
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post #13 of 17 (permalink) Old 01-31-2012, 07:46 PM
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Is it an SP! or an SP2? If its an SP1 you can spend about 15 dollars at autozone and get a direct replacement switch which will turn your fan on sooner at 185 degrees. You just simply replace the screw in switch in the right side rad. Simple mod that will help keep the temps from getting to hot.

Also flush out the system with DISTILLED water. Make sure there is no corrosion or residue build up. MAke sure its topped off after and that is burped properly. Also check your rads themselves. Make sure the fins are good and not all bent blocking airflow.

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post #14 of 17 (permalink) Old 01-31-2012, 09:00 PM
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Originally Posted by James_03_rc View Post
With out looking at the book...is there anyway to drain the block?? Like pulling the water pump or anything?

James
You could do that but why? Your lower line is the drain point on the water pump.

Just drain and keep flushing until clear with the distilled water.(Make sure it gets hot enough to open the thermostat!!) Repeat the draining and fill with Engine Ice, or your favorite coolant...



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post #15 of 17 (permalink) Old 01-31-2012, 09:00 PM
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Here's more info on the switch mod.

http://www.fireblades.org/forums/hon...an-switch.html

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post #16 of 17 (permalink) Old 02-01-2012, 12:06 AM
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I've done the switch mod, in all reality, I think it keeps the bike about 5 - 10 degrees cooler on average, unless it's 100 degrees outside. In moderate temps like 70 -80 degrees, my SP1 ran a max of 185-190. Maybe 200 at the red light, but get moving again and it drops back down. Now when it's less than 70 degrees outside, the bike runs around 175 most of the time. Right where the thermostat is just open.

John, 2000 RC51 #000100

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post #17 of 17 (permalink) Old 02-01-2012, 11:49 PM
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Spal pusher fan: $35
Manual fan switch: $10
Lower thermo switch (SP1 only) $15

If it gets extremely hot where you are:
radiator shrouds: $300 (there is a set for sale here or speedzilla for $250 right now)
front mount radiators $900 (tygausa.com, they always sell out so actually call them if you are serious)



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