WR450 Radiator overflow bottle removal

Has anyone removed the radiator overflow bottle and run the bike without it to save on weight?

Is it a good idea or a stoopid thing to do and not worth the risk of damage by running out of water and overheating? :worthy:

The plastic bottle itself weighs almost nothing. It would not be worth it.

The only weight you would be saving is the small amount of coolant it holds if/when your bike heats up. I think in this case it is worth having, since the "weight" of that coolant is coming from your hot engine/rads anyway.

I suppose you could just disconnect the coolant recovery bottle and dump this "excess" weight straight to to the ground. But gushing out coolant as a way to reduce weight seems like a PIA way to cut a few ounces!

Slightly off topic but my 426 is a resevior/overflow. Meaning, like a automobile, it holds coolant when the bike is cold. This seems contrary to what Mgouras is saying. How are ther 450's set up?

Brian

The 450 uses the same recovery type system that the 426 uses. The 450 , at least the aluminum framed bikes use a " in my opinion" too small of a reservoir/recovery tank. During some of the more technical rides the coolant that is in the recovery tank still blows out on the ground through the overflow hose. This rarely happens, I'm just saying that removing it isn't the best way to go IMHO. WR Dave

I purchased my 04 without the overflow tank. Mine overflows down by the rear shock, I assume like the YZ's do. Only once has it ever puked any, and it was very little, and the bike was very hot, stuck in the snow, in a canyon.

Has anyone removed the radiator overflow bottle and run the bike without it to save on weight?

Is it a good idea or a stoopid thing to do and not worth the risk of damage by running out of water and overheating? :worthy:

I consider the overflow bottle to be a good design feature , leave it on .

One of the very first things I did when I got my 07 WR450 was remove the overflow bottle.

I have now done over 6000k's (4000 miles) in all conditions without a single problem. I have to add a tiny bit of coolant about every 6 months.

Pat

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