how hot does a radiator get???


6 replies to this topic
  • crazymxrider_93

Posted May 11, 2009 - 03:27 AM

#1

sorry its probably a stupid question, but i need to know how hot my radiator gets because i need to put a little JB weld on it because its somewhat corroded on the bottom. it doesnt leak, but i just want to be safe. :excuseme:

  • no1clyde

Posted May 11, 2009 - 04:19 AM

#2

Well water boils at 212 and with a pressure cap that may be 230 or so so that would be about the hottest it should get. I have used JB type stuff to "fix" radiators before with good luck.

Ed

  • alex211

Posted May 11, 2009 - 05:08 AM

#3

I used JB weld to fix my rad before. Make sure the metel is CLEAN, JB weld will not stick to dirty metal.

  • cxcmoto

Posted May 11, 2009 - 06:28 AM

#4

Most radiator caps are rated at 1.1 bar or 15psi.

That would mean it could reach 250F before boiling over.

A heavy duty cap would be 1.6 bar or 20 psi. == 264F

JB weld is fine up to 500, so no worries there.

+1 for the cleaning -- I suggest brake cleaner because its easy to get and does not leave a residue. - JB weld says acetone, lacquer thinner, and not alcohol.
http://www.jbweld.net/faq.php#faq006


REF:
http://www.engineeri...ater-d_926.html

remember to add atmospheric pressure when using the charts.

  • AtomicXRer

Posted May 11, 2009 - 06:41 AM

#5

The boiling point of 50/50 mix of ethylene glycol and water is 265F....so I would think your radiator wouldn't get hotter than this...IMO

I have used JB weld on the cylinder head by the KIPS valveand have had no problems.

  • Polar_Bus

Posted May 11, 2009 - 08:05 AM

#6

sorry its probably a stupid question, but i need to know how hot my radiator gets because i need to put a little JB weld on it because its somewhat corroded on the bottom. it doesnt leak, but i just want to be safe. :excuseme:


Under normal operating conditions a motocross cooling system runs about 130-150F. MX bikes don't use a thermostat so coolant temps can be all over the place, depending on many variables such as ambient temps, jetting, piston top end condition... and so on..

  • crazymxrider_93

Posted May 12, 2009 - 06:54 AM

#7

ok thanks guys :excuseme:





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