New Epic Partnership Targets Cat 3600 Engines

Peak’s two-piece precombustion chamber design is based on an exclusive gasket that is certified to 26,000 psi (1792 bar) and provides continuous positive pressure on the sealing surfaces, regardless of bolt torque or vibration.

Epic International (Epic) has been named the new master distributor for Peak Power & Compression’s (Peak) one- and two-piece precombustion chambers for Caterpillar (Cat) 3600 engines.

Headquartered in Albuquerque, New Mexico, USA, Peak is a supplier of aftermarket and original equipment manufacturer (OEM) parts for Caterpillar, Cummins, and Waukesha engines. In partnership with the US Department of Energy’s Sandia National Laboratory and the Combustion Research Facility, Peak has developed a one- and two-piece precombustion chamber for Caterpillar 3600 gas engines that have been tested and vetted by some of the industry’s largest pipeline companies for more than three years.

“Our partnership with Peak, and our ability to serve Cat 3600 users with an advanced precombustion chamber, advances our mission to be the preferred OEM alternative in the gas compression aftermarket,” said John Sargent, vice president of reciprocating products at Epic.

Headquartered in Houston, USA, Epic was founded in 2015 by former executives of Cameron International’s compression business. The company provides manufacturing, repair, and engineering support for engines and centrifugal and reciprocating compressors, including brands such as Ingersoll Rand, Cooper Turbo (Joy), IHI, FS Elliott, Cooper-Bessemer, Clark, Cameron, Ariel, Superior, Worthington, Ajax, Caterpillar, Waukesha, and more. Epic has a global network of facilities and personnel, with additional locations in Oklahoma and Kentucky, USA; Italy; and Singapore.

“The reason this market exists is because the Cat prechamber has leaked for so many years,” said Sargent. “Dimensionally, Peak’s prechamber and Cat’s original prechamber design are similar. A key difference is in the seal. Cat’s original prechamber was a twopiece design that was sealed face to face with a gasket between the flat mating surfaces. Every time a prechamber fires, the gas is forced to absorb the entire combustion load. This ‘hammering effect,’ combined with the high combustion temperatures and pressure, work like a forging process to hammer out the seal. As the Cat seal is hammered, bolt torque is lost and the OEM gasket leaks, allowing coolant into the combustion chambers. Tracy Northington, owner of Peak, developed a design that seals the prechamber from the inner diameter of the prechamber to the outer diameter of the prechamber body. Peak’s two-piece prechamber design includes an Inconel gasket that is certified to 26,000 psi (1792 bar) and provides continuous positive pressure on the sealing surfaces regardless of bolt torque, vibration, temperature, or pressure, ensuring a leak-free tip-to-body seal.”

The two-piece prechamber’s patent-pending design features a Hastelloy 242 forged and tempered seal with an integral-wound titanium spring between the body and the one-piece removable billet tip, providing positive pressure against the sealing surface.


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