WFO
Novice Class
Posts: 71
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posted November 24, 2005 08:49 AM
 Edited By: WFO on 26 Nov 2005 12:06
need to cool my 2000 zx12r down
can anyone help me. my bike has engine ice for antifreeze in it. the bike has a1270 bigbore.the fan is muzzy and on a switch.the pipe has been hpc coated and wrapped but the bike runs very hot all the time.
  
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12r1
Expert Class
Posts: 390
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posted November 24, 2005 11:51 AM
Check all the obvious stuff, it should'nt be TOO hot. If you mean the gauge stays on 3/4 when in town for awhile, it's normal. As long as the fan is cycling to keep it there. Oh, you have it switched... just leave it on when in town. 12's aren't the coolest running bikes totally stock, especially when actin' up in town all day. What exactly do you mean by TOO hot?
jeff
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted November 24, 2005 01:01 PM
REally chronic overheating is often an airlock in the system. Make sure you bleed it properly.
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238mph
Pro
Posts: 1145
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posted November 24, 2005 01:33 PM
Edited By: 238mph on 24 Nov 2005 17:54
I can't believe no one mentioned the most common cause of chronic overheating....
Small hole in the head gasket lets superheated exhaust enter the cooling system and
superheats the water.
All it takes is a tiny pinhole.
To test, remove each spark plug, remove radiator cap... add air pressure to each cylinder
and see if you get air bubbles out of the radiator.
That will be $50... 
____________
Pilot Powers took me to the grave, and brought me back...
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12r1
Expert Class
Posts: 390
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posted November 24, 2005 04:49 PM
There are a few causes for sure, as 238 points out. Hope it's not as serious as that, and maybe just some air in the system.
jeff
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psycho1122
Pro
Posts: 1608
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posted November 25, 2005 07:03 AM
If you do not find air in your cooling system, re-evaluate your air / fuel ratio. My 1270 likes to run from 12.6 - 12.9:1.
Lean idling / running engines tend to run hot.
____________
You say PSYCHO like it's a BAD thing!!
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238mph
Pro
Posts: 1145
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posted November 25, 2005 09:08 AM
Psycho made a good point... that why I run egt sensors in each cylinder... I can see what's
happening throughout the RPMs and at cruise...
____________
Pilot Powers took me to the grave, and brought me back...
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VincentHill
Needs a life
Posts: 6520
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posted November 26, 2005 01:07 PM
After making sure all of the air is removed, go up 2 bars on the 1st button on the Power Commander. That will add 4% more fuel. If that resolved the problem, then change the map for 0, 2% and 5% throttle to 4 to 5% more fuel up to 3 to 4,000 RPM then adjust from there.
____________
Made History @ Daytona and still one fast old man!!
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