![]() ![]() I haven't ridden in exactly the same conditions yet. Comparing that and the Powersports data sheets, they both appear to be the same stuff with different color dye). I could generally baby the bike so it wouldn't boil over on steep climbes but it was right on the limit.Įnter EWC (the normal, high performance stuff. Idled the bike for a min (has cooling fan) then shut it down and ate a musli bar. From there coolant bubbled out of the overflow tank and the reading on the radiator cap rocketed to over 150c. The temp gradually increased to over 130c. I went offroad on a hot day and climbed long hills. No coolant temp gauge so I replaced the radiator cap with a Mishimoto gauge rad cap (1.3 bar). I have a SWM superdual (Husquarvana TE630). That's a side note and not what I'm posting here for. This is a highly controversial product and on other sites it envokes everything from agreeance to serious flaming and abuse! As an interested observer of people Evans threads are somewhat entertaining. I know this is an old thread but I have had a little experience with EWC. Another side benefit is its better lubricity over water. I can use Evans since it is a propylene glycol that is allowed at the tracks. Additionally, the coolant is open into my catch bottle reducing the coolant system pressure to zero. Using the Evans coolant, my track coolant temperature increases over all about 5 deg. The pressure would build high enough to boil over. Once stoping the bike, the coolant temperature would increase to around 245 deg F due to the residual heat in the motor. Often, when getting to the pits the coolant temperature would be approximately 225 deg F due to the slow pit speeds. While on the track the coolant temperature would be in the 209 deg F range. The bike was originally set ups using water with water wetter. I have had many instances of boil over once getting to the pits or if there is a delay before the start of a race. The problem I have is overheating when riding up or if there is a long distance from track exit to the pits. The bike does not have radiator fans as it relies on ram air while on the track. I use it in my Buell 1125R road race motorcycle. It has certain advantages in racing applications. Using Evans in standard motors does not make sense to me. A member here has set up dyno engines with thermocouples and measured higher metal temps as a result.yes, water wetter, but nothing cools better than water. ![]() (*) note that products like this (and water wetter) point to lower coolant temperatures, which indicate by their very nature less heat removed. (If heat flux is too high, Departure from nucleate boiling occurs, and a film of steam blankets the surfaces.that's bad, heat flux drops, and metal temperatures soar.) With the phase change, this is the mode of transferring MAXIMUM heat away from the metal surfaces.Īny product that tells you that in stopping this from occurring they are improving things is either flat out misrepresenting, or has no idea of how stuff works.and will be leading to higher metal temperatures (*) Nucleate boiling in high heat flux areas exists, it's that type that you see in a saucepan as it comes to the boil. I have spoken to a Tech from Evans in Pennsylvania at length and it sounds pretty amazing, they are running it in a Chevy Impala loaded up with sensors and I plan to visit their shop.ĭoes coolant boil in the area adjacent to the combustion chamber in a properly functioning and pressurized system?ĭo you have some type of high performance vehicle or tow very heavy? What concerns me is that my radiator will need to dissipate more heat and I feel that either the radiator needs enlarging or I need to upgrade my cooling fans to move more air, there are some amazing aftermarket cooling fans out there.ĭoes anyone have any experience with Evans Coolant? What's not to like? I have always been a Dexcool fan but the benefits of this coolant are hard to overlook. > While it is expensive at first, it is a lifetime coolant not needing to be flushed every 2 years for green and every 5 years for Dexcool > Because more heat is moved away, the aluminum block material at the head bolts is cooler > Because there is no water, the potential for galvanic corrosion is greatly minimized > Because it doesn't boil, less pressure is built up in the cooling system, lessening the stress on seals, radiator end tanks and coolant tank, > A boiling point of 375 degrees, will improve heat transfer away from wet cylinder sleeves and head bolt area more efficiently, coolant will boil in this area adjacent to the combustion chamber impeding the heat transfer causing this area to cool poorly, I have done a few searches but didn't turn up anything on Evans Coolant. ![]()
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