1st Gen R53 Cooper S Most liked posts in thread: Evans NPG+ Coolant

:cornut: No but...................opcorn:opcorn:opcorn:

Jason

 

There was some discussion about that product deep in this thread http://www.motoringalliance.com/forums/mini-stuff/2395-redline-water-wetter.html

 

Still using it here - and no complaints.

 

Hey, is somebody talking about my thread?
I am still on my ~40% OEM coolant plus distilled water and Water wetter mix. Seems to be working well enough.

 

Buy the Evans flush and use it before according to their instructions before refilling with their coolant. You do not want old coolant mixing with the new stuff.

 

So, what would be the decision point on a switch over?
- coolant temps?
- less need for electric fans?
- better corrosion resistance?

What gets better?

 

For me it was the corrosion resistance and thermal capacity. After having it in my VW's built motor and seeing the performance it was a no brainer.

 

So in an emergency, can you add water? Or does that ruin the coolant?

 

How was the performance improved?

 

Head temperature remained 10 degrees cooler under the same circumstances allowing me to run more timing.

 

I used this stuff in my Jeep & it looked like rusty water. It might of pulled more heat from the head but I couldn't tell you for sure because I had now way to measure it.

 

I am not trying to challenge your conclusions, just understand them. I was around when this was first being developed. They were running very high compression ratios in Chevy V-8 engines and not experiencing any air pockets in the cylinder heads. This is totally in line with your statement of lower head temperatures, but the water temperature of the engines in these test were close to 300 degrees. The point was the coolant did not boil locally, because the Chevy heads had restrictions to the flow. Those restrictions caused localized boiling at high power levels. When you say your cylinder head temperature was reduced, what specifically are you measuring?
As an interesting development of this product, the company was doing cooling work for GM and developed the reverse cooled Chevy engine. Most engines including the MINI and all current GM engines pump the coolant in the block and through the heads. There was a high performance version of the generation one small block Chevy that pumped the water in the heads and out the block.

 

I have two temp sensors screwed into the head that measure the temp of the cylinder head itself. The Corvette is still reverse flow water cooled and the high performance variants of the LSx motors are as well..

 

Thank you for letting me know how you measured the temperature. I did not mean to imply that any Chevy engine is not water cooled. One of the last versions of the generation one small block pumped the water from the radiator through the heads first, and then the block. every other engine in production that I am aware of, including every Chevy engine pumps the water through the block first.

 

My apology that should have read - the Corvette and high performance LSx motors are still reverse cooled.

 

I stand corrected.

 

EVANS NPG COOLING, very interesting stuff. Considering this in the Spring when I replace the water pump before I have to as a preventative measure. I can buy it somewhat locally, Item# Evan-NPG1
$37.00