CR 500 1985 Mag water pump

[Sgt Hugo Stiglitz]

Hi guys,

New to the forum I have aquired a 85 500 but I am still restoring my 84 500 and I want to put the 85 in storage for a while.

What do I do with the coolant drain it or leave it, I want to try and avoid the mag corrosion probs.

Thanks Hugo

[oldyzman]

Hey hugo,
I'm told that you should drain it completely. Another guy recently told me thet once it is dry you then fill the water pupm up with WD40 non aerosol...
Brett

[090]

I drained my one that I am not using.It is awaiting a resto. You're a man of good taste btw! 

[Sgt Hugo Stiglitz]

Thanks for the info guys hey 090 did you use the WD40 method??

Hugo

[vmx42]

Make sure you blow out the waterpump with compressed air. It only takes a couple of drops of water to start the corrosion.

[Hoony]

sound advice here even from the keenster ! i would even remove the water pump housing cover plate

[090]

Thanks for the info guys hey 090 did you use the WD40 method??

Hugo

No. I reckon flushing with clean water would be a good idea.

Not sure about wd and seal. Is that okay?

[holeshot buddy]

drain and flush out with clean water
leave water pump cover off

and during race season carry spare covers to races
to change between motos

[Power Stand]

I use distilled water,,, coolant reacts with the magnesium & alloy. I drain the water out when I get home and blow out with air from the rad with the barrel & water pump drain plugs removed but if storing for long periods I remove the cover.