All Humvee's with GM and GEP 6.2, 6.5, and 6.5T engines all share an inherent design flaw in their cooling circuit. Due to the packaging of the cooling system, coolant distribution is disproportionately fed to the front of the engine block and heads. The rearmost cylinders run significantly hotter due to this inadequacy. In the earlier 6.2 engines these higher temperatures led to many of the well known failures in those engines which are nearly always in the rear two cylinders. Later blocks increased block density and used better metallurgy among other improvements to reduce the catastrophic failures, but never addressed the cooling imbalance.
Paradox developed our system using proven technology from our Motorsports background. The Motorsports industry have long known of the benefits to balancing the temperatures across V8 engines especially when running at the cutting edge of detonation needed to make maximum power. While that may not be the goal of most Humvee owners, cooler running temperatures, better power and efficiency are. Further the reduced heat from the rear of the engine is a welcome reprieve from hot cabin temperatures too.
The Paradox system opens up the blocked off rear coolant area of these engines and allows for flow to the front of the coolant circuit. By opening this up we create coolant flow to the once dead area of the block. The added benefit is reduced air/steam pockets and constant coolant bleeding to the overflow tank.
Our system is hand assembled in the USA. We use Aerospace certified AN fittings, USA made high temperature/pressure hose with a soft outer layer to not cut into your soft metal parts. We fabricate a custom bolt on replacement for the rear coolant block off plates which includes new gaskets as well. Everything is a true bolt-on system. Should you desire to remove the system it is fully reversible as well. All systems come with a color step by step guide for installation. Buy with confidence with a full one year warranty against manufacturer defects and workmanship.
NOTE: Though these engines are very similar to the 6.2, 6.5, and 6.5T engines used in civilian applications, they are not 100% compatible. Please contact us for details on what is needed for your application. Bolt-on civilian kits are in the works for early summer release.
>>>NOTE THE EBAY COMPATIBILITY LIST IS NOT CORRECT, THESE FIT ALL TRUCKS WITH 6.2/6.5 ENGINE!<<<
>>>These kits may be shipped worldwide however EBAY tags these as for USA use only. Please contact us directly for shipping outside the USA.<<<