Coolant questions - NPG and others
Posted June 25, 2005 - 01:49 PM
nc, any concerns about corrorison damage? Their site talks about sealing off the system, because it'll absorb moisture from the atmosphere. What happens if the system pulls fluid from the overflow back into the radiator? Isn't the overflow vented, to allow room for the boilover to flow back there? With no corrision additives, I'd think it'd be a concern, but if I knew, I wouldn't be here, asking questions.
I've had one boil over on my wr450 - it was 90 outside, and it was slow, technical stuff. Right now, its 95 outside, and its supposed to be close to that all week. So, that prompted me to do some coolant research. I'm skeptical of stuff that you add to your oil to keep the bike cooler - I'd rather leave that job to the radiator, and let oil do what oil does - lube the engine.
What about stuff like engine-ice, and water-wetter? Any experience with those products?
Also, does anyone have those carbon-fiber air-intake-shroud-thingies installed?
Do those make a difference?
Thanks for the info!
Posted June 26, 2005 - 12:52 PM
Posted June 26, 2005 - 03:38 PM
Posted June 26, 2005 - 05:44 PM
NPG-R and the overflow bottle to allow for expansion. I have not seen any issues yet. I think the overflow bottle is sealed tight with the cap.
Whats the difference between NPG-R and NPG? I see you can buy all three (NPG+, NPG, NPG-R) from their website, but they say nothing about NPG-R.
How long have you been running it, and did you switch to it because you were boiling over?
Posted June 26, 2005 - 06:03 PM
EVANS lifetime, corrosion free, WATERLESS engine coolants have been proven on professional race circuits and private multi million dollar test tracks, exotic engine dynomometers, and in competition with virtually every major sanctioned body of racing including FORMULA 1, NASCAR, NHRA, SCCA, IMSA, IRL, Grand American, NMCA, ARCA, AMA, WERA, American Lemans, SCORE Off Road, World Rally up, and numerous Boat Racing Venues.
Run Faster - Run Better - Never Overheat!
NPG-R is specifically formulated to handle the extreme conditions of racing and high performance automotive, marine and motorcycle applications. The reduced viscosity of NPG-R makes it more compatible with small tube copper-brass radiators while providing the superior cooling of Evans Waterless Coolants. Although NPG-R is safe for all metals and contains no water, an annual coolant change is suggested for racing vehicles. For maximum corrosion protection, high performance street driven vehicles running NPG-R should change coolant every other year
Evans NPG Coolant will transfer 27.5% more heat energy than water in your race engine, due to NPG's molar heat of vaporization and high saturation temperature.
THE BENEFITS OF EVANS NPG COOLANT FOR RACE CAR ENGINES
Extends cooling performance
Provides low, or no-pressure system
Protects from boil-over
Permits increased compression without detonation
Permits more spark without detonation
Eliminates system scaling and reduces corrosion
Permits use of a smaller radiator
Permits smaller frontal openings to improve aerodynamics
Eliminates pump cavitation
Prolongs hose life
Posted June 26, 2005 - 07:40 PM
Posted June 26, 2005 - 07:41 PM
Posted June 27, 2005 - 09:10 AM
Posted June 27, 2005 - 10:51 AM
...hey toyotie that pink stuff will still boil out at 250-275 and if i'm in a situation where that happens, its better to have coolant circulating in a hot motor than to have it circulating to the ground
I have never had it boil out. I can see my overflow level rising indicating things getting a little warmer. But never more than a few inches. NC, your too slow of a rider, not getting enough air flow across those radiators. Just funning with ya, I know your a hot dogger in the trails.
Posted June 27, 2005 - 07:38 PM
Posted June 28, 2005 - 06:08 AM
Posted June 28, 2005 - 07:57 AM