The Truth Behind Fresh Water Cooling SystemsThe term "Fresh Water Cooling Systems" also known as "Closed Marine Cooling Systems" can be confusing as these systems circulate antifreeze and not water. Marine Fresh Water Cooling systems are similar to the cooling system in an automobile, however, rather than a radiator they utilize a heat exchanger and rather than using air to remove the heat generated by the engine they use lake or ocean water. The heat exchangers are constructed by inserting a tube bundle of small tubes, maybe 150 or more, into a single large tube approximately 4" - 6" in diameter. The raw water pump on the engine flows sea water through the inside of the smaller tubes and makes multiple passes back and forth across the unit while removing the heat from the engine before finally exiting and flowing out the exhaust system. The anti-freeze or "jacket water" flows up and down across the outside of the smaller tubes in one single pass as it dispels the heat load of the engine into the raw water. Select the following link to see a diagram of a typical Half System... These systems are thought to be primarily reserved for people who operate in corrosive water conditions, however as you will see these systems have much more to offer than just corrosion protection. One of the main deficiencies of the standard "open" cooling systems is that they rely on a pressure balance for proper functioning. In extreme cases you can be introducing 40 degree water into the circulation loop that is attempting to regulate the engine at 160 degrees. This makes it near impossible for the engine to operate without some amount of cycling. Also with the onset of more stringent emissions regulations it is near impossible for the open systems to produce a stable enough operating condition that the engine spark and fuel mapping can be maximized. Click here to go directly to the Online Store Click here for Marine Cooling System Maintenance Products
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|Heat Exchangers/Oil Coolers||Circulating Pumps||Fresh Water Cooling||High Performance|
|Technical Tips and Maintenance Information|
|FWC Benefits...||FWC Basics...||FWC Maintenance...||FWC Trouble Shooting...||FWC 1/2 System Vs. Full System...|
Heat Exchanger & Oil Coolers
PPT also offers a wide assortment of Heat Exchangers as well as Power Steering and Oil Coolers. Once again not all after market products are the same. We utilize higher tube count bundles for our oil coolers and heat exchangers which means more effective surface cooling area in the same overall package size. The OEM's have began to realize these benefits over the past several years and so should you. Until now the only way to achieve these type of products was to go back with original equipment - no longer! While in some cases we do agree that original equipment is the better option, in these cases we also offer the OEM replacements at the industries lowest available prices, however when there is no specific requirement dictating the OEM replacement don't throw away un-necessary money.
Engine Circulation Pumps
If your looking to replace a worn out marine water pump PPT has a complete line of new marine water pumps. Our pumps utilize stainless steel backing plates, bronze bi-directional impellers as well as ceramic face seals. You will not find a better price on a better product!
|PUMP - Inline 4 & 6 Cylinder Engines||PUMP - V6 & Small V8 Engines||PUMP - Big Block V8 Engines|
Mercruiser Closed Cooling Systems (OEM Products Breakdown Charts)
|Engines W/ Dry Joint Exhaust||I/O Engines W/ O Dry Joint Exhaust||Inboard Engines W/ O Dry Joint Exhaust||Ski Engines W/ O Dry Joint Exhaust|
PPT's High Performance Closed Cooling systems are the industries only product which utilize rotational thermostat housing and intake manifold features.