I removed my front mudflaps and bracket tonight and I had to remove my overflow bottle also and I passed the overflow line up above in my frame and zip tied it in place. Is it okay for me to do this?? I've neever boiled over and the coolant level never changed anyway. I don't mind if a little coolant drips anyway but I was just wondering if the tank was needed for some odd reason.

 

Run the over hose down the frame and secure it. If it over flows, you want it to steam and spray down underneath the quad.

 

well you have done the correct job by removeing the entire bottle but you must have an over flow to be on the safe side. run the tube up and into to a medicne bottole about half the size of a coke can and than zip tie it up and out of the way into the cowl area.. make sure you can see thru it for easyer maint.... ive gone ahead like you and removed everything possible from the machine to liteing it up a bit and yes i could tell the difference... have a good holiday comeing up before you no it ... and if you live on the west coast you can meet us out at armagosa sand dunes early christmas morning for some nice dune rideing......Jim ps.. sorry i had to rub that in...

 

I went through this same thing and ended up reinstalling my overflow bottle. One person on this site mentioned installing the overflow tank's top bracket onto the other side of the motor mount to help tuck the bottle in a bit further. You will still have to come up with something to support the tank on the bottom however. I haven't found a solution to it yet but when I get some time I'm going to try building a different bracket.

For the question on whether you need the bottle or not, well it isn't a bad idea, plus it really doesn't weigh anything. The fan is definitly necessary. I have noticed that the Mojo uses a smaller radiator than a Quadracer and the other hipo quads thus making the fan required for slow speed riding, especally when it is hot or you are going through deep snow and spinning lots of RPM's without much forward speed.

 

Listen people....you do not need your over flow as long as you're not poking around in second gear. I race MX and it isn't nessesary. If you do allot of woods riding, you might want to relocate it to the rear of the frame, kinda like a Banshee.

 

Some people say you need it and others say you don't. I jus want to know WHAT IT ACTUALLY DOES?? When it overheats does it just catch the coolant, or does coolant actually go back through the tube into the radiator?

 

HEre it is.....


When your cooling system heats up, the fluids expand and increase coolant system pressure. The pressure forces coolant out of the tube into the overflow bottle when it reaches a certain temp range. As the temp goes back down, it sucks the fluid back in from the overflow through the overflow hose (running from jsut below the radiator cap to the overflow bottle) becasue the pressure drops in the cooling system.

I think that pretty well puts it in terms.

Did this help?

 

Yup it did. I only asked that because when I used to ride, it would boil over, and keep doing so. In other words, the coolant would come OUT of the over flow bottle (the over flow tube coming out of that). By the end of each ride, my coolant would be below half way. Lurch had told me this was because I was using automative coolant. I switched to a motorcycle grade coolant and this helped a lot. I currently do not have an overflow bottle on my Mojave, but if I see that it needs it, I will put it back on.