JE Pistons New Asymmetrical LS Pistons For Street Applications
Ah, the marvels of technology; it’s a wondrous thing and great for gearheads that just wanna go fast. In this case, JE Pistons hopes to revolutionize the LS industry with what they claim are the first off-the-shelf asymmetrical pistons.
What’s an asymmetrical piston? Without expanding into an engineering dictation, asymmetrical pistons have different sized skirts, a thrust side and a non-thrust side along with an off-center pin that help disperse the uneven side loads that pistons see while traveling up and down inside the block.They’re purposely imbalanced to create balance in an inherently unbalanced situation. How’s that for confusing?
Nonetheless, these off-the-shelf high-tech pistons should be great for many of the high horsepower forced induction, nitrous and NA LS motors currently under construction. Here’s the release for more info and visit the thread for more info:
Introduces less friction
Reduces piston weight
Achieves perfect balance
Produces more horsepowerIrvine California: JE has pioneered a new range of asymmetrical pistons for GM LS engines. Available off-the-shelf, they are the first of their kind.Known as asymmetrical because their skirts are of noticeably different sizes—a thrust side and a non-thrust side that address disproportionate loads in the cylinder. Also, their piston pin is positioned slightly off center.
Though designed to support high cylinder pressures in applications producing 1,500hp-plus, both forced induction and nitrous, they also operate happily in naturally aspirated LS engines. Beyond this the piston configuration promotes lightness, strength, and durability as its unique design enables material to be distributed in the areas exposed to higher stresses. The major skirt, which operates on the thrust side, combats the highest side loads. The lowest side loads, in contrast, are handled by the minor skirt, which is free of undue weight and friction.
Further weight reductions are achieved with 106-gram piston pins. Measuring 2.250in long these compare favorably with the pins of traditional full-round piston designs that measure 2.750in and weigh 130 grams. Developed from 5115 alloy steel they are produced with a wall thickness of 0.150in. However, greater wall thicknesses are available as well as upgraded materials to custom-tailor each combination. Pins and accompanying round wire locks are included in each piston kit.
Created from 2618 aluminum alloy, these pistons are machined to suit rings of 1.2mm, 1.2mm, and 3mm. Significantly JE’s Pro Seal ring pack distinguishes itself by including a carbon steel nitride top ring. Inherently suited to nitrous and forced induction, it has a more durable ring face than the plasma moly inlay type. The most interesting element of their second ring, a Napier-style hooked face ring, is that it possesses oil control attributes not found in conventional tapered second rings. The remaining component of the ring pack, the oil control ring, is 3.0mm with standard tension. However, it is devised to operate in conjunction with the special qualities of the Napier.
Also noteworthy, these new asymmetrical LS designs accommodate factory oiling squirter systems, which will continue to spray in the correct locations and keep the pistons cool. To further reduce the likelihood of hot spots and pre-ignition, JE adds smooth-finish crowns, a process that blends all the edges of the piston crown, including the valve reliefs. Well-engineered and robust, JE’s new asymmetrical forging designs allow for the use of the most popular stroke and rod combination while eliminating reluctor wheel clearance problems.
Finally, JE maintains stocks of over 200 configurations of LS-series pistons for all popular combinations, produces custom pistons in two weeks or in five days when expedited, and ships to 95 percent of its customers in two days.
For more information contact: JE Pistons
8 Mason Lane, Irvine, California 92618 Telephone (714) 898-9763 or visit http://www.JEPistons.com