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OffRoad Where do u mount your overflow bottle on 250 XCW

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I usually mount the bottle behind the headlight so i can see it fill up but i think i will be running a number plate, so thats out. I dont want to run it behind the rads because that may reduce cooling. I have seen some people run them in the airbox, but i dont like not being able to see it at all. any suggestions? thanks

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I run Evans Waterless Coolant in my 250 xcw and a high pressure radiator cap, never lost any coolant yet

http://lubricationspecialist.com/evans-coolant/?gclid=CMrVofLI4qgCFaF75Qod9n8ODg

What pressure cap do u run? And have u done any extreme riding (like been in the same 20 yard section of trail with motor running and strugling for 15 + minutes?

Thanks Rob!

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What pressure cap do u run? And have u done any extreme riding (like been in the same 20 yard section of trail with motor running and strugling for 15 + minutes?

Thanks Rob!

I also run Evans coolant. It wont boil out like normal coolant.

I've been meaning to ask though, aren't you renting this KTM? If so, how many changes can you make to the bike or does KTM care?

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What pressure cap do u run? And have u done any extreme riding (like been in the same 20 yard section of trail with motor running and strugling for 15 + minutes?

Thanks Rob!

I run a 1.8 radiator cap.

Yep, I've been stuck before in the mud (delaware enduro), rock crawling at low speeds, stuck on hill climbs and never boiled or hurt my bike while running this fluid.

When installing this fluid you have to drain the entire system and make sure all the water is out. You can't mix this fluid with regular radiator fluid.

I also run radiator guards. I don't have an overflow bottle.

Another thing to look into would be to attach radiator fans, wire them up with a battery (since it's not your bike) and install a handlebar switch so you can turn the fans on manually. I did this on my 05 te450 before they made a radiator fan for that bike. I don't currently have a fan on my two stroke, I don't think it needs one, that bike really doesn't get that hot compared to the 450.

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Another thing to look into would be to attach radiator fans, wire them up with a battery (since it's not your bike) and install a handlebar switch so you can turn the fans on manually. I did this on my 05 te450 before they made a radiator fan for that bike. I don't currently have a fan on my two stroke, I don't think it needs one, that bike really doesn't get that hot compared to the 450.

Ditto that. I have one on m 450 and it works great. However, I haven't put one on my 300 because I have yet to boil it over.

The problem I have with the Evans coolant is that, god forbid it did actually boil over and you lost precious coolant, you can add water to it to get you home and off the trail.

I have seen many bikes boil here in Colorado. Just yesterday we boiled a 450 trying to ride a trail with down trees, mud and snow patches. My 450 didn't boil because I ran my fan 1/2 the time. so my vote would be for the fan if it is an option.

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layton

I am not excactly sure what KTM will and wont allow. Thats a good question. I will let u know

Rob

I got the fan and handlebar switch but i didint hook it up to the Thermostat...yet...also got a Turntech 7.5 amp battery

Noyac

I have boiled Evans on the 4 Smoke several times. i also boiled in the 2 smoke too, but it may have been just boiling out the left over coolant from the factory that hasnt been properly removed.

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Rob

I got the fan and handlebar switch but i didint hook it up to the Thermostat...yet...also got a Turntech 7.5 amp battery

My $.02 again. I would skip the thermostat and just have the switch wired straight to the fan. This way you have more control of when the fan is on or off. If your coming to a technical section just turn it on so it doesn't reach the temperature point waiting for the fan to kick. When you pull up to your buddies and kill the bikes on a group ride, your not trying to talk over the running fan which is draining your battery.

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My $.02 again. I would skip the thermostat and just have the switch wired straight to the fan. This way you have more control of when the fan is on or off. If your coming to a technical section just turn it on so it doesn't reach the temperature point waiting for the fan to kick. When you pull up to your buddies and kill the bikes on a group ride, your not trying to talk over the running fan which is draining your battery.

Why not add the thermo-sensor and a switch? If you don't have a sensor, a 95-90 C '84 BMW 318i auto accessory fan switch is available cheap from your local auto parts store.

P.S. I just noticed that this was for a 2 stroke, so the sensor may not work on that?

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It may be snake oil but if you are looking to help control heat you may try Two2Cool and Engine Ice. Its a pretty popular combination in the 50cc racing world us dads live in.

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Tomsti, are you mixing these two products? what combination?

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Tomsti, are you mixing these two products? what combination?

Two2cool additive mixes with your oil per mfg instructions and the Engine ice is radiator fluid.

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Two2cool additive mixes with your oil per mfg instructions and the Engine ice is radiator fluid.

IT'S FUNNY HOW CLUELESS I CAN BE AT TIMES.:smirk:

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I made a "turkey baster"type boil bottle and mounted it to the first radiator fin. Next to the frame. I have also seen guys fit the WR bottle behind the side number board under the seat but you will not be able to see that.

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I made a "turkey baster"type boil bottle and mounted it to the first radiator fin. Next to the frame. I have also seen guys fit the WR bottle behind the side number board under the seat but you will not be able to see that.

That is interesting! Can u post a pic? thanks!

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Sorry sold the bike a few years ago, but you can see where it was mounted on this picture: (i actually used a large syringe as my bottle and zip tied it to the first fin next to the frame so it does not interfere with air flow)

IMG_1541sm.jpg

It will catch and suck back a fair amount of fuel, but the way those ktm's boil you may still loose coolant

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PS you can always come past the swazicowboyz stand and ask me to explain in more detail. what is your race number for Erzberg? mine is 312, but i think we have different goals, mine is to start the HS without too much of a hangover!!!

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