2 hotty
Parking Attendant
Posts: 10
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posted September 11, 2007 03:18 PM
2003 zx12 temps???
i'm new to the street bike motors and i run a 2003 bone stock zx-12 in my dwarf car, and i want to know how hot do the motors run? whats optimal operating water temp? what water temp is too hot? any info will be greatly appreciated thanks....
  
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted September 11, 2007 03:23 PM
what coolant mix are you running? THe 12 motors dont like much glycol
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2 hotty
Parking Attendant
Posts: 10
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posted September 11, 2007 03:27 PM
 Edited By: 2 hotty on 11 Sep 2007 16:28
straight water, with about half a bottle of purple ice temp. reducer......don't like to run glyco cause if a hose blows it covers you and the driving suit and that stuff burns!!!!!
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted September 11, 2007 03:32 PM
not crazy about purple ice. Prefer water wetter.
Maybe you have air in the system?
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2 hotty
Parking Attendant
Posts: 10
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posted September 11, 2007 03:35 PM
they didn't have any water wetter at the track, just the purple ice.....i've been told to pull off the track if the temp goes over 215 degrees is that true, or can i run it hotter?
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted September 11, 2007 03:42 PM
You got the cooling fans hooked up to your car???If they are cycleing like they are supposed to do,you shouldn't have a problem..I think they come on at 215 or 225 and kick off at 210 or somewhere around there....What gear are you running around the track in...And what rpm...Wire it so that the fan stays on all the time...JMO....
Paul.....
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2 hotty
Parking Attendant
Posts: 10
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posted September 11, 2007 04:05 PM
Edited By: 2 hotty on 11 Sep 2007 17:07
fans on all the time, i have it wired to a switch. the car has the stock radiator out of an r1 in it. looking to run a bigger aluminum radiator out of a honda civic. but does anyone know what temps i should be looking for or where i should cool it down at? i run 4:10 gears in an 8 bolt rear end in 3rd gear, runs about 12000 to 12500 at the end of straights, but it doesn't kickoff the rev limiter.......
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted September 11, 2007 04:15 PM
203-214F,the fan comes on, Per manual....Themastat opens at 136 to 144f...Does this help at all...
Paul....
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2 hotty
Parking Attendant
Posts: 10
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posted September 11, 2007 04:21 PM
yes, so 225-230 is hot!!! no problem, gonna put a bigger radiator in it and maybe bigger fan and i'll try that...thanks for the help paul......
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted September 11, 2007 04:24 PM
Your engine will be happiest at 180-210F. You should have no problem keeping it there with a thermostat PROVIDING your radiator has sufficient air flow through. An R-1 radiator is sized for less hp than a 12 rad and I guess it is smaller.
I'd suggest thatt you do run a larger radiator, really anything larger in area than a stock ZX-12 rad should work, BUT the limiting factor is not really radiator area but air flow.
The most commonly overlooked factor in designing cooling systems is not getting enough air in but getting it out the back. If you have a radiator larger than a stock ZX-12 rad, and If you find yourself unable to keep a stabilized temp, even with a higher temp thermostat, if the temp gradually climbs during a race, you have an airflow problem.
Doug
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psycho1122
Pro
Posts: 1608
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posted September 12, 2007 06:34 AM
One reason the 12R cooling system works so well is the "Diffusion Cooling" designed into the airflow through the faring. Like Doug said, proper size (volume) AND airflow should yield good results.
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You say PSYCHO like it's a BAD thing!!
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TRNorBRN6001
Needs a job
Posts: 2021
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posted September 12, 2007 08:19 AM
Just curious if you fellas run a dry sump system?
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TFA 200MPH CLUB MEMBER!
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2 hotty
Parking Attendant
Posts: 10
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posted September 12, 2007 09:17 AM
no the motor is not dry sumped, it's stock out of the bike, the orig. dash is even in the car, it still has the mileage,tach,clock, the whole 9 yards....runs great, just trying to solve the cooling problem.....thanks for all of your input!!!!!!!!
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