Hayabusa temp question

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07BUSAPILOT

Member
I recently bought a Busa and have noticed the temp rises fairly quickly in traffic, within 10 minutes or so of starting out. The fan has been kicking in and maintaining around halfway on the gauge ( a little bit on either side ). Im just wondering if this is normal for the bike and when summer really hits does it overheat at all. Also if anyone has any suggestions on a great coolant, I'm all ears. Thanks in advance.
 
It won't overheat, the fans will keep it from getting too hot. With the bike not moving it'll heat up very fast.

Motul MotoCool is good stuff.

-Jamie M.
 
sitting in traffic = no air flow. = It will get hot and will overheat eventually (depending on ambient temp)

A good solution, is to clean out the rad and straigten fins....and run a fan by pass switch. Flick the switch as soon as the bike gets to 90*C or when you know you'll be sitting in traffic. It will take longer to overheat as the fan has kicked in ealier.

if you need help - pm me.
 
toysareforboys said:
It won't overheat, the fans will keep it from getting too hot. With the bike not moving it'll heat up very fast.

Motul MotoCool is good stuff.

-Jamie M.
Click to expand...

Actually a gen 1 Hayabusa can overheat. It only has 1 fan, and it's not enough. Apparently with a full exhaust and remapped fuel, overheating isn't nearly as big of a problem.

You have a few options,
1) Get a lower temp sending unit that goes into the rad.

2) Manual switch like frekeguy mentioned to turn the fan on once in traffic. This jumpers the sending unit, if the fan is on before the bike heats up, it can keep its cool in summer traffic. Cheap and easy to do, I did this on my gen 1, and it works.

3) Add a fan to the right side, gsxr 1000 fans are popular. This can draw more power than stator is putting out though, and can drain battery idling for a long time.

4) Get a gen II busa, it will not over heat :D
 
What temps is it running at??

My fan on my bike normally comes on at 104. Once my old bike went up as high as 125. Nothing happend to it

Some people use water wetter, but they degrade with time and leave a film in the rad. I hate that.

I'm experimenting with different coolant/water ratio. If you mix 60% water, the temp will take longer to rise but will boil off at a lower temp.
Higher coolant ratio and the temps rises faster but will boil off higher.

I'm running a higher water concentration now
 
Thanks for all the great advice. It boggles the mind why Suzuki would put a single fan to cool such a huge power plant , but so be it. I think I'm going to start with a Muzzy six blades fan and a lower temp sensor and see if that solves the problem, again thanks.
 
07BUSAPILOT said:
Thanks for all the great advice. It boggles the mind why Suzuki would put a single fan to cool such a huge power plant , but so be it. I think I'm going to start with a Muzzy six blades fan and a lower temp sensor and see if that solves the problem, again thanks.
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Its a hyper sport bike, perhaps they thought it wouldn't be seeing traffic on a regular basis.

Rad fan also draw a huge deal of power - another reason to keep it to one fan.

Flushing out your system and cleaning up the rad, will lower temps - straight rad fins will flow air better.
 
I just installed a manual switch on my 05 Busa. I did it because my temp switch needs to be replaced. The problem with the factory temp switch is that it shuts off the fan too soon. I've read on one of the Hayabusa forums is that the you should switch out the temp switch with one from a Honda Accord as it will kick in the fan at a lower temperature.
 
chrias said:
I just installed a manual switch on my 05 Busa. I did it because my temp switch needs to be replaced. The problem with the factory temp switch is that it shuts off the fan too soon. I've read on one of the Hayabusa forums is that the you should switch out the temp switch with one from a Honda Accord as it will kick in the fan at a lower temperature.
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The thermal switch is ok for what it does. There are pros/cons to using a lower temp thermal swithc.

Personally I like having the control - bypass switch ftw!
 
frekeyguy said:
The thermal switch is ok for what it does. There are pros/cons to using a lower temp thermal swithc.

Personally I like having the control - bypass switch ftw!
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Wouldnt that kill your battery in traffic?
 
One time i was stuck in traffic so bad that the battery was dying. I had dual high beams on tho
 
RockerGuy said:
One time i was stuck in traffic so bad that the battery was dying. I had dual high beams on tho
Click to expand...

unplug head light.....the charging system will allocate more of its power to charge than running bulbs.
 
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