3 replies to this topic
  • 2cole

Posted May 25, 2004 - 06:10 AM


Help, I have a 03 YZF 450 and have recently had this happen. I purchased a IMS desert tank the one that comes down on each side and covers the motor.After a recent trip where I broke my Kick axle I noticed some overheating. I went on a ride with my son and I chuged the bike pretty good since my son rides a crf 50 when we got back to camp I noticed the gas in the tank was bubbling and boiling.It was about 95 deg that day. We have run some tests and this is what happened after 6 min 30 seconds of Idling at a air temp of aprox 65 deg the coolant begins to flow from the overflow with the IMS tank installed I also noticed the stock headpipe is slightly orange in color. I reinstalled the stock tank and let the bike cool back to room temp and re-started it. After 7 minutes 20 seconds coolant began to overflow and the headpipe is orange in color also is any of this normal and what can I do. Help I really hot about this.

  • thumpinscott

Posted May 25, 2004 - 07:19 AM


These beasts run hot. My only suggestion is to ride faster, and never let it idle past warm. Mine will overheat almost instantly after riding hard, then stopping for a minute or so while it's running. I just kill the motor.

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  • yathump

Posted May 25, 2004 - 12:50 PM


Do not let it idle for that long, once i get mine started i only let it idle for a minute tops then i ride around for a little bit before i start to ride hard. Also after i have been rideing i do not let it idle more than a minute, i have been considering running water wetter there have been some very positive things said about it.

  • Ga426owner

Posted May 25, 2004 - 02:40 PM


Just an idea to keep the water temp down a couple of degree's, Boyesen just released a waterpump impeller & cover for the 450's. It is supposed to lower water temp therefore adding HP.


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