![]() ![]() The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Coolant Products - Cummins Filtration Coolant & Additive - 2004.5-2007 Dodge 5.9L Cummins XDP CC2865 Genuine Cummins Filtration Coolant Additive Coolant. Prolink shows temps to be around 205 when fan kicks on, and temp drops to 190 fairly quickly. ![]() Radiators have been cleaned, temp sensors replaced, thermostats replaced-still overheating. Thomas and BB's with the engines stay between 210 and 220. Fleetguard ES Compleat PG Concentrate 1 Gal - CC2830. We have been experiencing overheat issues with the 5.9 isb's. FluidPOWER HD Antifreeze/Coolant 50/50 Premix 1 Gal - CC36155. It eliminates many problems associated with water in conventional water-. Fleetguard Quik-Chek Coolant Quality Test Strips - CC2718. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition. Evans waterless coolant is designed for all gasoline and light duty diesel engines. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9/6.7L Cummins is the coolant flow problem to the rear cylinders. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. A waterless coolant, such as Evans, does not. Fleece's coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. Water loses most of its heat transfer abilities when it turns to vapor, creating stress within the cooling system. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. The rear cylinders on the 5.9 Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. Help eliminate the possibility of scored rear cylinders and blown freeze plugs with this Coolant Bypass Kit from Fleece! Increased Coolant Flow, Decreased Coolant Temperatures The heat transfer coefficient is most important and its well know water has a high heat transfer coefficient, much higher than glycol. Thermal conductivity is relatively unimportant for a cooling system operating under a turbulent regime. Heat transfer coefficient and thermal conductivity are the respective measurements for these parameters. ![]() Specific heat is a measure of how much energy the coolant can adsorb and has no relation to how well (or fast) it may transfer to another surface or conduct heat within the fluid. I suggest you start a new thread, along with vehicle information and a more descriptive narrative of the work you have done. So the temperature increased by 44oF after converting to the Evans product.īy having engine cylinder head temperatures 128oF hotter with the Evans product, a number of performance setbacks were observed: (1) the octane requirement was increased by 5-7 numbers, (2) the computerized ignition system retarded timing by 8-10o to avoid trace knock, (3) horsepower was correspondingly reduced by 4-5%, as confirmed on a chassis dyno. The pressure regulator for the oil has nothing to do with the coolant. We saw a stabilized bulk coolant temperature of 192oF with water and No-Rosion, and 236oF with the Evans product. (No-Rosion does not alter the specific heat capacity of water.)Ĭylinder head temperatures of 115-140oF hotter with the Evans products translates to a stabilized bulk coolant temperature increase of 31-48oF, as compared to No-Rosion and water.Īs case in point, conversion of a Chevrolet LS-1 engine from No-Rosion and water to Evans Waterless Coolant resulted in an increase of 128oF at the cylinder heads. So they conduct roughly half as much heat as does water, or water with No-Rosion. Comparatively, the specific heat capacity of the various glycol solutions in the Evans products ranges from 0.64 to 0.68. It transfers heat more effectively than any other fluid, and is therefore used as the reference fluid in the scientific measure of specific heat capacity. Water has a specific heat capacity of 1.00. The reason for hotter cylinder heads relates to the specific heat capacity of these different fluids. After proper conversion to the Evans products, the average temperature of engine cylinder heads increased by 115-140oF, versus running with No-Rosion and water. ![]()
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