Maintenance & Technical > KX500 Original

Coolant in KX500

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dave916:
 can u use EVANS coolant with a low psi cap on any engine that was originally designed with a high pressure system  ??, i know modern superbikes run to 110c [100c is boiling]  sounds good if no pressure on hoses and seals

kxraptor:
I tried "Engine Ice"on my race quad.Found it did not drop temp at all .Never used it again.

agraebner:
exactly dave  check their site for more info i have it in 3 street bikes and 5 dirtbikes my car and my truck

KXcam22:
Pure water has the highest heat absorbtion capacity.  Adding antifreeze to the water reduces this but is often necessary to prevent freezing and/or corrosion in the system and to raise the boiling point.  As soon as the water boils, the vapour bubbles reduce the contact surface area which reduces the transfer of heat tremendously.  To combat this all rad run under a pressure which increases the boiling point of the water above normal. Products like water wetter should help since they work by reducing the surface tension of the water, making it contact a surface easier and more completely. Most roadrace courses mandate water only since antifreeze spilled on the track surface is very slippery and difficult to clean off.  The evans waterless coolant is a great product as it is a different fluid with a much greater heat absorbtion capacity than water.  It also doesn't boil so the cooling system does not need to be pressurized.  I have never tried it but have been tempted a few times.  It is a good fix for 450s like mine with teeny rads. I have never run engine ice myself but reading the label I recal it is just Propylene-glycol coolant which is a bit better than ethlene-glycol.  I spent $$ adding a cool overflow tank to my 450 when a better fiix would have been putting in the Evan coolant. Then no overflow tank would be needed. Cam.

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