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Discussion Starter · #1 ·
Hey guys, my 03 zx6r has been working fine for 3 years now, ive switched out the coolant to water wetter about 9 months ago and and then over winter I had to add some glycol because a few nites over winter it dropped to about 10 farenheit and below freezing in the garage. And this is the frist time I've had the bike out in the heat, 100 plus degrees, as I was pulling into the garage the temp shot up to 247 then it just flashed HI. Fan was on, not low on coolant or oil. Any idea, Im thinking I'll flush it out and replace with engine ice and maybe replace the thermostat??
 

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This heat in CA is a B. Last Sunday I hit Palomar, and the outside temp was 90+. Add that with high RPM's and the gauge was over 200 the whole time. It hit a max of 238 about a minute after I shut it off. A lot of times the temp will rise right after shut-off because there is no air hitting the radiator. You might also want to change the oil to a good synthetic and see what happens. My 6R has 3400 miles, and the last change was done @600 miles with the cheapest grade Spectro oil. Combine that with the extreme heat over the past month, and it's likely the oil's viscosity and heat-dissipating qualities are greatly reduced.
 

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just flush it out and put new one in and check to see if ur line is clog up or anything. I put half a bottle of water wetter in mine and it never goes over 200 while riding even in 95 degree weather, only when I stop for too long then it'll go over 200
 

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i was having big problems here in dallas. so i changed to a watter wetter, and wraped the hedders, with that stuff you use for race cars on their hedders, havent got to ride it much though. ill find out next week how well that all worked.
 

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Discussion Starter · #6 ·
Im gonna flush and go back to distilled water and water wetter today and see if that helps, then Im off to motogp on thurs so I hope it all goes well.
 

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Originally posted by ZaRussian
Water pump bearings lubricated by glycol,(anti-freeze)???? That's a new one to me.
just b/c u dont know about doesnt mean its not happening.
antifreeze is much more than coolant. dont beleive me, just run water or water wetter. see how long the pump lasts. and im not sure but im guessing there is some metal(iron) in the motor. that will cause electrolysis. antifreeze also helps combat that. ever seen the inside of a motor that had the wrong or no antifreeze. its very ugly and pitted, basically its JUNK!
 

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Originally posted by nevada


just b/c u dont know about doesnt mean its not happening.
antifreeze is much more than coolant. dont beleive me, just run water or water wetter. see how long the pump lasts. and im not sure but im guessing there is some metal(iron) in the motor. that will cause electrolysis. antifreeze also helps combat that. ever seen the inside of a motor that had the wrong or no antifreeze. its very ugly and pitted, basically its JUNK!
Not trying to offend you...if you're taking it that way. Antifreeze is not a lubricant. The water pump bearings are protected by the seal on the pump shaft. If/when the seal fails, it allows coolant to wash out/contaminate the grease in the bearings, thus leading to an eventual failure. You are right about the antifreeze doing more than cooling, it is an anti-corrosive for the system. With out it, you do in fact run the risk of the water attacking the metal in the system,( like the pump shaft, which when it starts to pit at the seal, can allow small amounts of coolant into those bearings;)). Now add Water Wetter to the mix and you could possibly see a bearing failure sooner. Why? Well products like that actually "thin" the water. They break down the surface tension of the water. This allows the water to seep into areas it might not normally have gone. Meaning past a hose clamp, or maybe a gasket, or shaft seal... If any of those connections/seals were not in good condition to start with, the additive will make the compromised area show up sooner.
Personally I would run at least a very small amount of antifreeze just for the anti-corrosive properties. A little in the system is better than none at all. Now it is a trade off as antifreeze is not really a good coolant. It can not match the heat transfer properties of water. So follow it up with distilled water and then top off with the appropriate amount of wetter/ice product. Of course check your level of freeze protection and antifeeze accordingly for your climate.
Again, not trying to offend. I do this stuff for a living. I feel I have some knowledge on this subject that others here may not. Just tryin to share :D.

H-bus...how'd it go?
 

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yeh i can vouch for water working much better than antifreeze. ive got a 5.0 in my toyota pickup, before i got my cooling system squared away, i had to run straight water, for awhile did a damn good job. and were good, no worries.:D
edit: actually i should have been a bit more clear in my previous post. it will keep the seal soft and pliable, thus keeping the water out of the bearing, as you mentioned. and ive seen some nasty water pump failures, when using incorrect or no antifreeze.
 
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