[icingdeath88]

Originally Posted by Tapani

This has been touched on before, but has anyone tried the Evans waterless coolant?

It's supposed to be superior to glycol/water against cavitation - see here:

http://www.evanscoolants.co.uk/techn...-no-erosion/47

I know cavitation in large diesel engine cooling systems cause cylinder liner erosion problems - I've seen it many times.

Here's a test result from SwRI (used to work there a long time ago )

http://www.evanscooling.com/assets/U...n-Results2.pdf

The liner erosion caused by cavitation was significantly reduced compared to the reference coolant.

I know the heat transfer is somewhat less than standard coolants, but if that is not the limiting factor.... someone who actually has this problem might want to try, eh ?

/T

(Chemist here) If the boiling point of the waterless coolant is much higher than the bp of water, then it should help at least some with cavitation. Their website says the BP is 180*C, water's BP is of course 100*C. says their coolant (the one branded npg+), is mostly ethylene glycol. Long story short, the increased bp should mean that the coolant is less susceptible to cavitation caused by low pressure on the inlet side of the water pump. At least, it should significantly raise the rpms that cavitation starts to occur at.

Seems to me that it would be worth a try. Maybe the combo of reducing the wp efficiency, plus the waterless coolant would give a decent compromise of high enough flow at low rpms to keep things cool and low enough flow at high rpms to prevent cavitation.

I'm still liking the electric water pump route more myself, but Evans/drilling wp could be a lower cost alternative that gets the job done.

Out of curiosity, is the waterless coolant usually allowed by competition rules?