overheating

I know lot's of guys here will or have said these things work. But the bottom line I got from some here that tried these things like diluteing,waterwetter,etc. is that the only way to be sure is to put on a rear cooler. I did and did nothing else and haven't overheated since it was new.
 
LJ 452,

Volume should not matter. 50/50 is always 50/50 and will have the same feeezing/boiling point regardless of how many gallons of it you have in the system.
 
Well, .. Technically, it does take longer for the cold to freeze up to the the center of a larger volume than a smaller volume of liquid, given all other things being the same. Ever see a bottle of water frozen around the outside and not frozen in the center? Have them rollin' around in the car all the time. When that happens, the fluid in the center was not exposed to the cold long enough to transfer all the heat down to the freezing point. The more volume, the longer it takes to complete the heat transfer for the entire volume, depending on the container's area exposed to the cold, etc. Oryou can think about it another way. It takes a large block of ice longer to melt than an ice cube. Eh?

But, when you are down to a few quarts of liquid, the exposure differential to freeze it all versus just the outer portion is quite short (i.e. shorter than an overnight's sleep.) But, unless it goes solid, it won't break anything.
 
Len,

Yes, technically you are correct. I got to thinking about this last night and thought about that same example of a water bottle. I was actually going to edit my post this morning but seen that you had already posted a similar comment.

However as you also stated, in the sled's coolant system the coolant is "spread out" over a larger surface area so it will freeze solid faster than the same volume of coolant in a large jug for example.

In any case I personally have my glycol concentration at 60/40 for peace of mind on those cold nights in northern Minnesota when the sled is sitting outside.
 
Yeah, at first I didn't believe it as well but then realized that it made sense; as does the thought of the small passages in the motor so, yes I agree, it probably doesn't matter. I was just stating what the bottle said and was looking for any thoughts on it. I think we can all agree that if you just set the mixture to around 60/40, or 50/50 for some you'll be fine. If you live in the arctic were it gets to -50 or -60 well, I don't think overheating is a concern. I actually put some of the mixture into a small water bottle that I keep in the trailer; I figure if that's frozen I'll get worried. A few weeks ago it was -18*F on the thermostat; everything was fine with all three sleds, mixed to aprox. 60/40.
 
I rode my old V-Max 4 800 on the coldest morning on record in MN which was -60 degrees F. on Feb 2, 1996. I was on a Sno Barons club trip in International Falls which was near where the record breaking temp was measured in Tower.

We waited until it "warmed up" to 30 below zero F. and tried to start the sleds. Ha Ha Ha, just try pulling the rope on a V-max 4 800 at 30 below!

We put blankets over the hoods and put hair dryers on extention cords under the hoods for an hour or so to get the sleds started. Then we road to the first bar and said f*%k this!

The reason that I tell the story is because I had just picked up the sled new from the dealership the day before the trip and whatever glycol mixture Yamaha had put in it at the factory obviously worked fine at that temperature.
 
Had the same issue occur last year on my 07. Everything checked out (ratio, temp settings, etc). Same issue this week in the UP. Snow conditions were more than adequate with about 6 inches of new and low teens for temperature. The problem is the ice that builds up around the heat exchanger. When this happens the cooling capability is lost because the ice prevents the melted snow from being removed keeping water against the heat exchanger. When this happened I pulled over, looked under and removed a heck of a lot of ice. I was amazed that much could build up. Light came back about fifty miles and a stop later. Every time I stop for a break I make sure the ice is removed. No other problems for the remainder of the day or the whole next day. The Rear Heat Exchanger is a must and I will be getting mine this week.
 
My '07 Apex RTX had its temp light come on only one time and i think it was because of a one of condition that occured, I was riding in really wet, deep, heavy snow, and my temp light came on after i stopped after one minute and was idling. I noticed a snow pack under the sleds running boards and front and rear exchangers were covered and had created a pocket where no snow could touch them. I cleaned the snow off, and stayed out of the deep stuff for that day, and I've never had a problem since. One of those weird conditions I think. For what its worth.
Rich Kay
 
The LTX's come OEM with a rear
cooler now for a reason.
 
Do yourself a favor and get the rear cooler. I did it three years ago. It was the only thing that will stop the problem. No more headaches.....
 
If its any help. I installed a temp guage as soon as the light came on the first time on my GT. I then worked through the usual noting the difference.Changing the antifreeze dilution using water wetter definately made a difference but only delayed the temperature build up. I then installed the marginal idlers etc etc... After riding for miles and miles putting snow on the running boards I installed the rear heat exchanger -the difference was huge and I havnt had the light on in over 5000 miles. I then changed my home made temp monitor to the Ulmer setup - fantastic.
Conclusion...dont waste time and possibly do damage to the motor - install the rear heat exchanger. I have also reduced the glycol to a 60/40 using water wetter.
 
get your anti-freeze to 50/50 and add 1/2 bottle of water wetter, make sure all the air is out of the system, my 06' attak, no rear heat exchanger, -25*F to 45*F never overheated, did the same to my wifes 07 phazer fx no problems
 
what conditions are you guys running in that is making the sled heat up?
i have ridden in just about every consition and have never seen mine heat up!
 
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