Evans High performance Waterless Coolant is design for all gasoline and light duty diesel engines. Evans coolant eliminates plenty of problems connected with water in conventional water-based cooling systems, while enhancing reliability and also engine life. You love your vehicle—it deserves Evans.

You are watching: Too much pressure in cooling system


Powersports Coolant 1/2gal

Evans Powersports waterless engine coolant is designed because that motorcycles, ATVs, UTVs and also snowmobiles. It has actually been offered by race teams around the world for year to store their engines safe, no matter what the conditions. They nothing pull end to let your engines cool down, and neither need to you.


Powersports Coolant 1gal

Evans Powersports waterless engine coolant, available in one gallon and also a half-gallon bottle, is designed for motorcycles, ATVs, UTVs and snowmobiles.


Prep Fluid

Evans Prep fluid is a waterless cooling system flush engineered specifically to purge the cooling mechanism of water-based antifreeze after draining and also before installing new waterless coolant. Prep liquid should be used when block drains are unavailable or can not be removed. That is not a substitute for extensively draining the cooling system and related components. Prep liquid is not intended to be a stand-alone operating coolant, but as a do the washing up only.


Decreasing mechanism Pressure in your Cooling System

Automotive cooling systems use "system pressure" to affect cooling functions. The action of the pump pushing coolant through the engine against restriction create pressure.

This push varies v engine rpm when a crank shaft-driven pump is used; An electric pump maintains a continuous pressure or varies the pressure related to engine temperature. System pressure can be together high together 40psi or an ext at the engine outlet/cylinder heads or together low as 5psi in ~ the pump inlet throughout idle. A push drop, through the radiator core, accompanies the drop in temperature the the coolant.

System pressure is affected by:

Engine designRadiator configurationThermostat designHose sizePump output

The only means to change this press is to increase/decrease pump circulation or add or remove restriction from the system.

The water ingredient of coolant boiling, in the hottest areas of the engine, create expansive vapor, which more pressurizes the system. "Cap pressure" refers to the amount of liquid and vapor pressure organized in the device at the lid location. This is the just pressure the is obvious to everyone, it"s declared on the radiator cap. Depending upon the location of the cap it have the right to be together low together 4psi or together high as 35psi.

The boiling allude of water, typically 212°F, for every 3 psi is elevated 1°F. Of additional pressure. A typical 15 psi. Cap, will host the water in the system up to around 257 levels F. This walk not median there is no boil in the engine up to this temperature, yet it is the point, as much as which the cap will contain the expansive nature that the vapor.

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When utilizing Evans Coolant in the engine cooling system these pressures deserve to be reduced to maximize the system"s flow and also temperature control capabilities. These transforms are application details and need to be discussed before proceeding. Please call Evans Tech assistance at 1-888-990-2665 or tech
evanscooling.com.

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